/* ============================================================
   hiORG Theme — Design System & Styles
   ============================================================ */

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
    --color-primary:        #2563EB;
    --color-primary-hover:  #1D4ED8;
    --color-primary-light:  #EFF6FF;
    --color-accent:         #7C3AED;
    --color-accent-light:   #F5F3FF;
    --color-text:           #0F172A;
    --color-text-muted:     #475569;
    --color-text-light:     #94A3B8;
    --color-background:     #FFFFFF;
    --color-surface:        #F8FAFC;
    --color-surface-hover:  #F1F5F9;
    --color-border:         #E2E8F0;
    --color-border-hover:   #CBD5E1;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, sans-serif;
    --text-xs:   clamp(0.75rem,   0.72rem + 0.15vw, 0.8125rem);
    --text-sm:   clamp(0.8125rem, 0.79rem + 0.18vw, 0.875rem);
    --text-base: clamp(0.9375rem, 0.9rem  + 0.22vw, 1rem);
    --text-lg:   clamp(1.0625rem, 1rem    + 0.4vw,  1.125rem);
    --text-xl:   clamp(1.1875rem, 1.1rem  + 0.6vw,  1.25rem);
    --text-2xl:  clamp(1.375rem,  1.25rem + 0.85vw, 1.5rem);
    --text-3xl:  clamp(1.625rem,  1.4rem  + 1.4vw,  2rem);
    --text-4xl:  clamp(2rem,      1.7rem  + 1.8vw,  2.75rem);
    --text-5xl:  clamp(2.5rem,    2rem    + 3vw,    4rem);
    --space-1: 0.25rem; --space-2: 0.5rem;  --space-3: 0.75rem;
    --space-4: 1rem;    --space-5: 1.25rem; --space-6: 1.5rem;
    --space-8: 2rem;    --space-10: 2.5rem; --space-12: 3rem;
    --space-16: 4rem;   --space-20: 5rem;
    --container-max: 1440px;
    --container-pad: clamp(1rem, 5vw, 2.5rem);
    --header-height: 72px;
    --logo-width: 160px;
    --radius-sm: 4px;   --radius-md: 8px;   --radius-lg: 12px;
    --radius-xl: 16px;  --radius-2xl: 24px; --radius-full: 9999px;
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08),0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08),0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.1),0 4px 10px -5px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 40px -8px rgba(0,0,0,0.12),0 8px 16px -8px rgba(0,0,0,0.05);
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.16,1,0.3,1);
    --z-header: 1000; --z-dropdown: 1100;
    --z-overlay: 1190; --z-mobile: 1200; --z-progress: 1300;
}

body.dark-mode {
    --color-text:          #F1F5F9;
    --color-text-muted:    #94A3B8;
    --color-text-light:    #64748B;
    --color-background:    #0F172A;
    --color-surface:       #1E293B;
    --color-surface-hover: #263347;
    --color-border:        #334155;
    --color-border-hover:  #475569;
    --color-primary-light: rgba(37,99,235,0.15);
    --color-accent-light:  rgba(124,58,237,0.15);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4),0 1px 2px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4),0 2px 4px -1px rgba(0,0,0,0.2);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.5),0 4px 10px -5px rgba(0,0,0,0.2);
    --shadow-xl: 0 20px 40px -8px rgba(0,0,0,0.6),0 8px 16px -8px rgba(0,0,0,0.3);
}

/* ── Reset ─────────────────────────────────────────────────── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-family, var(--font-sans));
    font-size: var(--text-base);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-base), color var(--transition-base);
}
img,video { max-width: 100%; height: auto; display: block; }
ul,ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input,textarea,select { font-family: inherit; font-size: inherit; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary-hover); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

/* ── Layout Utilities ──────────────────────────────────────── */
.container { max-width: var(--container-max); margin-inline: auto; padding-inline: var(--container-pad); }
.skip-link {
    position: absolute; top: -100px; left: var(--space-4);
    background: var(--color-primary); color: #fff;
    padding: var(--space-3) var(--space-6);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    font-weight: 600; z-index: 9999;
    transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; color: #fff; }

/* ── Reading Progress Bar ───────────────────────────────────── */
.reading-progress-bar {
    position: fixed; top: 0; left: 0; height: 3px; width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    z-index: var(--z-progress); transition: width 80ms linear; pointer-events: none;
}

/* ============================================================
   Desktop Header
   ============================================================ */
.site-header {
    height: var(--header-height);
    display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
    padding: 0 20px;
    max-width: var(--container-max);
    margin-inline: auto;
    border-bottom: 1px solid var(--color-border);
    position: sticky; top: 0; background: var(--color-background);
    z-index: var(--z-header);
    transition: background-color var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}
.site-header.is-scrolled { box-shadow: var(--shadow-md); }

.site-branding { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.site-branding .custom-logo { width: var(--logo-width); max-height: 60px; height: auto; object-fit: contain; }
.site-branding .site-title {
    font-size: var(--text-xl); font-weight: 700; color: var(--color-text);
    text-decoration: none; letter-spacing: -0.02em; transition: color var(--transition-fast);
}
.site-branding .site-title:hover { color: var(--color-primary); }
.site-branding .custom-logo.dark-logo { display: none; }
body.dark-mode .site-branding .custom-logo:not(.dark-logo) { display: none; }
body.dark-mode .site-branding .custom-logo.dark-logo { display: block; }

.site-navigation { flex: 1; display: flex; justify-content: center; align-items: center; }
.site-navigation .menu { display: flex; align-items: center; gap: var(--space-1); list-style: none; }
.site-navigation .menu-item { position: relative; }
.site-navigation .menu-item > a {
    display: flex; align-items: center; gap: var(--space-2);
    color: var(--color-text-muted); font-weight: 500; font-size: var(--text-sm);
    padding: var(--space-2) var(--space-3); border-radius: var(--radius-md);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    white-space: nowrap; text-decoration: none;
}
.site-navigation .menu-item > a i { font-size: 0.8125rem; opacity: 0.75; width: 16px; text-align: center; flex-shrink: 0; }
.site-navigation .menu-item > a:hover { color: var(--color-primary); background: var(--color-primary-light); }
.site-navigation .menu-item.current-menu-item > a,
.site-navigation .menu-item.current-menu-ancestor > a {
    color: var(--color-primary); background: var(--color-primary-light); font-weight: 600;
}
.site-navigation .menu-item-has-children > a::after {
    content: "\f107"; font-family: "Font Awesome 6 Free"; font-weight: 900;
    font-size: 0.6rem; opacity: 0.55; margin-left: var(--space-1);
    transition: transform var(--transition-base); flex-shrink: 0;
}
.site-navigation .menu-item-has-children:hover > a::after { transform: rotate(180deg); }
.site-navigation .sub-menu {
    position: absolute; top: calc(100% + 8px); left: 0; min-width: 230px;
    background: var(--color-background); border: 1px solid var(--color-border);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-xl);
    padding: var(--space-2); list-style: none;
    opacity: 0; visibility: hidden; transform: translateY(-6px);
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
    z-index: var(--z-dropdown);
}
.site-navigation .menu-item:hover > .sub-menu,
.site-navigation .menu-item:focus-within > .sub-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.site-navigation .sub-menu .menu-item > a {
    display: flex; align-items: center; gap: var(--space-3);
    padding: var(--space-3) var(--space-4); color: var(--color-text-muted);
    font-size: var(--text-sm); font-weight: 500; border-radius: var(--radius-md);
    transition: color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}
.site-navigation .sub-menu .menu-item > a:hover { color: var(--color-primary); background: var(--color-primary-light); transform: translateX(4px); }
.site-navigation .sub-menu .menu-item-has-children > a::after { content: "\f105"; margin-left: auto; }
.site-navigation .sub-menu .sub-menu { top: -8px; left: calc(100% + 4px); }

.header-actions { display: flex; align-items: center; gap: var(--space-2); flex-shrink: 0; }
.dark-mode-toggle {
    display: flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; border: 1.5px solid var(--color-border);
    border-radius: var(--radius-full); color: var(--color-text-muted);
    font-size: 0.9375rem; transition: all var(--transition-base);
    background: transparent; cursor: pointer;
}
.dark-mode-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-light); transform: rotate(15deg); }
.dark-mode-toggle .fa-sun { display: none; }
body.dark-mode .dark-mode-toggle .fa-moon { display: none; }
body.dark-mode .dark-mode-toggle .fa-sun { display: inline-block; }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
    padding: 0.5rem 1.125rem; font-size: var(--text-sm); font-weight: 600;
    text-decoration: none; border-radius: var(--radius-md); border: 1.5px solid transparent;
    transition: all var(--transition-base); cursor: pointer; white-space: nowrap;
    letter-spacing: 0.01em; line-height: 1;
}
.btn-register { background: var(--color-primary); color: #fff !important; border-color: var(--color-primary); box-shadow: 0 1px 3px rgba(37,99,235,0.3); }
.btn-register:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); color: #fff !important; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37,99,235,0.35); }
.btn-login { background: transparent; color: var(--color-text-muted) !important; border-color: var(--color-border); }
.btn-login:hover { border-color: var(--color-primary); color: var(--color-primary) !important; background: var(--color-primary-light); }
.btn-primary { background: var(--color-primary); color: #fff !important; border-color: var(--color-primary); box-shadow: 0 2px 8px rgba(37,99,235,0.3); }
.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); color: #fff !important; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,99,235,0.4); }
.btn-outline { background: transparent; color: var(--color-text-muted) !important; border-color: var(--color-border); }
.btn-outline:hover { color: var(--color-primary) !important; border-color: var(--color-primary); background: var(--color-primary-light); }
.btn-lg { padding: 0.75rem 1.75rem; font-size: var(--text-base); border-radius: var(--radius-lg); }

/* ============================================================
   Mobile Header
   ============================================================ */
.mobile-header {
    display: none; align-items: center; justify-content: space-between;
    height: 60px; padding: 0 var(--space-4);
    max-width: var(--container-max);
    margin-inline: auto;
    border-bottom: 1px solid var(--color-border);
    position: sticky; top: 0; background: var(--color-background);
    z-index: var(--z-header);
    transition: background-color var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}
.mobile-header.is-scrolled { box-shadow: var(--shadow-md); }
.mobile-branding { display: flex; align-items: center; }
.mobile-branding .custom-logo { max-height: 60px; width: auto; object-fit: contain; }
.mobile-branding .site-title { font-size: var(--text-lg); font-weight: 700; color: var(--color-text); text-decoration: none; }
.mobile-branding .custom-logo.dark-logo { display: none; }
body.dark-mode .mobile-branding .custom-logo:not(.dark-logo) { display: none; }
body.dark-mode .mobile-branding .custom-logo.dark-logo { display: block; }
.mobile-menu-toggle {
    display: flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md); color: var(--color-text-muted);
    font-size: 1.125rem; transition: all var(--transition-fast); background: transparent; cursor: pointer;
}
.mobile-menu-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-light); }
.mobile-actions { display: flex; align-items: center; gap: var(--space-2); }
.mobile-actions .dark-mode-toggle { width: 34px; height: 34px; font-size: 0.875rem; }
.btn-mobile-dashboard,.btn-mobile-logout,.btn-mobile-register,.btn-mobile-login {
    display: flex; align-items: center; justify-content: center;
    width: 34px; height: 34px; border-radius: var(--radius-md);
    font-size: 0.9375rem; transition: all var(--transition-fast);
    color: var(--color-text-muted); border: 1.5px solid var(--color-border); text-decoration: none;
}
.btn-mobile-register,.btn-mobile-dashboard { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-mobile-register:hover,.btn-mobile-dashboard:hover { background: var(--color-primary-hover); color: #fff; }
.btn-mobile-login:hover,.btn-mobile-logout:hover { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-light); }

.mobile-menu-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.5);
    backdrop-filter: blur(3px); z-index: var(--z-overlay);
    opacity: 0; visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}
body.mobile-menu-open .mobile-menu-overlay { opacity: 1; visibility: visible; }
.mobile-menu {
    position: fixed; top: 0; left: 0;
    width: min(320px, 85vw); height: 100dvh; height: 100vh;
    background: var(--color-background); z-index: var(--z-mobile);
    transform: translateX(-100%); transition: transform var(--transition-slow);
    display: flex; flex-direction: column; box-shadow: var(--shadow-xl);
    overflow-y: auto; overscroll-behavior: contain;
}
body.mobile-menu-open .mobile-menu { transform: translateX(0); }
.mobile-menu-close {
    display: flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: var(--radius-md);
    color: var(--color-text-muted); font-size: 1.0625rem;
    transition: all var(--transition-fast); cursor: pointer;
    border: 1.5px solid var(--color-border);
    margin: var(--space-4) var(--space-4) var(--space-2); align-self: flex-end; flex-shrink: 0;
}
.mobile-menu-close:hover { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-light); }
.mobile-navigation { flex: 1; padding: var(--space-2) var(--space-3); }
.mobile-menu-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-1); }
.mobile-menu-list .menu-item > a {
    display: flex; align-items: center; gap: var(--space-3);
    padding: var(--space-3) var(--space-4); color: var(--color-text-muted);
    font-weight: 500; font-size: var(--text-base); border-radius: var(--radius-md);
    transition: all var(--transition-fast); text-decoration: none;
}
.mobile-menu-list .menu-item > a:hover,
.mobile-menu-list .menu-item.current-menu-item > a { color: var(--color-primary); background: var(--color-primary-light); }
.mobile-menu-list .menu-item > a i { width: 20px; text-align: center; opacity: 0.7; font-size: 0.875rem; flex-shrink: 0; }
.mobile-menu-list .sub-menu { list-style: none; padding: var(--space-1) 0 var(--space-2) var(--space-8); margin: 0; }
.mobile-menu-list .sub-menu .menu-item > a { font-size: var(--text-sm); padding: var(--space-2) var(--space-3); }
.mobile-auth-buttons { display: flex; gap: var(--space-3); padding: var(--space-4); border-top: 1px solid var(--color-border); }
.mobile-auth-buttons .btn { flex: 1; justify-content: center; }

/* ── Main ─────────────────────────────────────────────────── */
main#main { min-height: calc(100vh - var(--header-height)); }

/* ============================================================
   Page Layout
   ============================================================ */
.page-wrap { max-width: 900px; margin: 0 auto; padding: var(--space-12) var(--container-pad); }
.page-header { margin-bottom: var(--space-8); padding-bottom: var(--space-6); border-bottom: 1px solid var(--color-border); }
.page-title { font-size: var(--text-4xl); font-weight: 800; letter-spacing: -0.03em; color: var(--color-text); line-height: 1.2; }

/* ============================================================
   Archive / Blog
   ============================================================ */
.archive-wrap { max-width: var(--container-max); margin: 0 auto; padding: var(--space-12) var(--container-pad); }
.archive-header,.search-header { margin-bottom: var(--space-10); padding-bottom: var(--space-8); border-bottom: 1px solid var(--color-border); }
.archive-label {
    display: inline-block; font-size: var(--text-xs); font-weight: 700;
    letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-primary);
    background: var(--color-primary-light); padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full); margin-bottom: var(--space-4);
}
.archive-header h1,.search-header h1 { font-size: var(--text-4xl); font-weight: 800; letter-spacing: -0.03em; color: var(--color-text); line-height: 1.2; }
.archive-description { margin-top: var(--space-4); color: var(--color-text-muted); font-size: var(--text-lg); max-width: 60ch; }
.posts-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%,300px),1fr)); gap: var(--space-8); margin-bottom: var(--space-12); }
.post-card {
    background: var(--color-background); border: 1px solid var(--color-border);
    border-radius: var(--radius-xl); overflow: hidden;
    display: flex; flex-direction: column;
    transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}
.post-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--color-border-hover); }
.post-card-image { aspect-ratio: 16/9; overflow: hidden; background: var(--color-surface); flex-shrink: 0; }
.post-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); border-radius: 0; margin: 0; }
.post-card:hover .post-card-image img { transform: scale(1.05); }
.post-card-image-placeholder { aspect-ratio: 16/9; background: linear-gradient(135deg,var(--color-primary-light),var(--color-accent-light)); display: flex; align-items: center; justify-content: center; font-size: 3rem; opacity: 0.35; flex-shrink: 0; }
.post-card-body { display: flex; flex-direction: column; flex: 1; padding: var(--space-6); gap: var(--space-3); }
.post-card-category {
    display: inline-flex; align-items: center; background: var(--color-primary-light);
    color: var(--color-primary); font-size: var(--text-xs); font-weight: 700;
    letter-spacing: 0.05em; text-transform: uppercase; padding: 3px 10px;
    border-radius: var(--radius-full); width: fit-content; text-decoration: none;
    transition: all var(--transition-fast);
}
.post-card-category:hover { background: var(--color-primary); color: #fff; }
.post-card-title { font-size: var(--text-xl); font-weight: 700; line-height: 1.3; letter-spacing: -0.02em; margin: 0; }
.post-card-title a { color: var(--color-text); text-decoration: none; transition: color var(--transition-fast); }
.post-card-title a:hover { color: var(--color-primary); }
.post-card-excerpt { color: var(--color-text-muted); font-size: var(--text-sm); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.post-card-meta { display: flex; align-items: center; gap: var(--space-4); font-size: var(--text-xs); color: var(--color-text-light); padding-top: var(--space-4); border-top: 1px solid var(--color-border); flex-wrap: wrap; }
.post-card-meta i { margin-right: 4px; opacity: 0.7; }
.post-card-read-more { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-sm); font-weight: 600; color: var(--color-primary); margin-top: var(--space-2); transition: gap var(--transition-fast); }
.post-card-read-more:hover { color: var(--color-primary-hover); gap: var(--space-3); }

/* ── Pagination ─────────────────────────────────────────────── */
.pagination { display: flex; justify-content: center; margin: var(--space-12) 0; }
.pagination .nav-links { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; justify-content: center; }
.pagination .page-numbers {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 40px; height: 40px; padding: 0 var(--space-3);
    border: 1.5px solid var(--color-border); border-radius: var(--radius-md);
    font-size: var(--text-sm); font-weight: 600; color: var(--color-text-muted);
    text-decoration: none; transition: all var(--transition-fast);
}
.pagination .page-numbers:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.pagination .page-numbers.current { background: var(--color-primary); color: #fff; border-color: var(--color-primary); box-shadow: 0 2px 8px rgba(37,99,235,0.3); }
.pagination .page-numbers.dots { border-color: transparent; pointer-events: none; }
.posts-navigation,.post-navigation {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4);
    margin: var(--space-12) 0 0; padding-top: var(--space-8); border-top: 1px solid var(--color-border);
}
.posts-navigation .nav-next,.post-navigation .nav-next { text-align: right; align-items: flex-end; }
.posts-navigation .nav-previous,.posts-navigation .nav-next,.post-navigation .nav-previous,.post-navigation .nav-next { display: flex; flex-direction: column; gap: var(--space-2); }
.nav-label { font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--color-text-light); display: flex; align-items: center; gap: var(--space-2); }
.nav-title a { font-size: var(--text-lg); font-weight: 700; color: var(--color-text); text-decoration: none; line-height: 1.3; transition: color var(--transition-fast); }
.nav-title a:hover { color: var(--color-primary); }

/* ============================================================
   Single Post
   ============================================================ */
.single-post-wrap { max-width: 780px; margin: 0 auto; padding: var(--space-12) var(--container-pad); }
.single-post-header { margin-bottom: var(--space-10); }
.post-category-badge {
    display: inline-flex; align-items: center; gap: var(--space-2);
    background: var(--color-primary-light); color: var(--color-primary);
    font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.06em;
    text-transform: uppercase; padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full); text-decoration: none;
    margin-bottom: var(--space-5); transition: all var(--transition-fast);
}
.post-category-badge:hover { background: var(--color-primary); color: #fff; }
.single-post-header h1 { font-size: var(--text-4xl); font-weight: 800; line-height: 1.2; letter-spacing: -0.03em; color: var(--color-text); margin-bottom: var(--space-6); }
.entry-meta { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-4); font-size: var(--text-sm); color: var(--color-text-light); }
.entry-meta a { color: var(--color-text-muted); font-weight: 500; transition: color var(--transition-fast); }
.entry-meta a:hover { color: var(--color-primary); }
.entry-meta .sep { opacity: 0.4; }
.entry-meta i { margin-right: 4px; opacity: 0.7; }
.post-featured-image { margin-bottom: var(--space-10); border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-lg); aspect-ratio: 16/9; }
.post-featured-image img { width: 100%; height: 100%; object-fit: cover; border-radius: 0; margin: 0; box-shadow: none; }

/* ── Content Typography ─────────────────────────────────────── */
.entry-content { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.8; }
.entry-content h1,.entry-content h2,.entry-content h3,.entry-content h4,.entry-content h5,.entry-content h6 {
    font-weight: 700; line-height: 1.25; letter-spacing: -0.02em; color: var(--color-text); margin-top: 2.25em; margin-bottom: 0.75em;
}
.entry-content h1 { font-size: var(--text-4xl); } .entry-content h2 { font-size: var(--text-3xl); }
.entry-content h3 { font-size: var(--text-2xl); } .entry-content h4 { font-size: var(--text-xl); }
.entry-content h5 { font-size: var(--text-lg); }  .entry-content h6 { font-size: var(--text-base); font-weight: 600; }
.entry-content p { margin-bottom: 1.6em; }
.entry-content a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.entry-content a:hover { color: var(--color-primary-hover); }
.entry-content ul,.entry-content ol { list-style: revert; padding-left: 1.75em; margin-bottom: 1.6em; }
.entry-content li { margin-bottom: 0.5em; }
.entry-content blockquote { border-left: 4px solid var(--color-primary); padding: var(--space-5) var(--space-6); margin: var(--space-8) 0; background: var(--color-primary-light); border-radius: 0 var(--radius-md) var(--radius-md) 0; font-style: italic; color: var(--color-text); }
.entry-content blockquote p:last-child { margin-bottom: 0; }
.entry-content pre { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-6); overflow-x: auto; margin-bottom: 1.6em; font-size: var(--text-sm); line-height: 1.6; }
.entry-content code { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 0.1em 0.4em; font-size: 0.88em; }
.entry-content pre code { background: none; border: none; padding: 0; font-size: 1em; }
.entry-content img { border-radius: var(--radius-lg); margin: var(--space-8) auto; box-shadow: var(--shadow-md); }
.entry-content table { width: 100%; border-collapse: collapse; margin-bottom: 1.6em; font-size: var(--text-sm); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-xs); }
.entry-content th,.entry-content td { padding: var(--space-3) var(--space-4); border: 1px solid var(--color-border); text-align: left; }
.entry-content th { background: var(--color-surface); font-weight: 600; color: var(--color-text); }
.entry-content tr:hover td { background: var(--color-surface); }
.entry-content hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-10) 0; }
.entry-summary { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.7; margin-top: var(--space-4); }

/* ============================================================
   404 Page
   ============================================================ */
.error-404-wrap { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; min-height: calc(100vh - var(--header-height) - 240px); padding: var(--space-16) var(--container-pad); }
.error-404-graphic { display: block; font-size: clamp(6rem,20vw,10rem); font-weight: 900; line-height: 1; background: linear-gradient(135deg,var(--color-primary) 30%,var(--color-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; letter-spacing: -0.05em; margin-bottom: var(--space-4); }
.error-404-wrap h2 { font-size: var(--text-3xl); font-weight: 700; color: var(--color-text); letter-spacing: -0.02em; margin-bottom: var(--space-4); }
.error-404-wrap > p { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 46ch; margin: 0 auto var(--space-8); }
.error-404-actions { display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; justify-content: center; }

/* ============================================================
   Search Page
   ============================================================ */
.search-wrap { max-width: var(--container-max); margin: 0 auto; padding: var(--space-12) var(--container-pad); }
.search-form-wrap { margin-bottom: var(--space-10); }
.search-form { display: flex; gap: var(--space-3); max-width: 580px; flex-wrap: wrap; }
.search-form input[type="search"] { flex: 1; min-width: 200px; padding: var(--space-3) var(--space-5); border: 1.5px solid var(--color-border); border-radius: var(--radius-lg); font-size: var(--text-base); color: var(--color-text); background: var(--color-background); transition: border-color var(--transition-fast),box-shadow var(--transition-fast); }
.search-form input[type="search"]:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
.search-form input[type="search"]::placeholder { color: var(--color-text-light); }
.search-form button[type="submit"] { padding: var(--space-3) var(--space-6); background: var(--color-primary); color: #fff; border: none; border-radius: var(--radius-lg); font-size: var(--text-base); font-weight: 600; cursor: pointer; transition: all var(--transition-fast); font-family: inherit; white-space: nowrap; }
.search-form button[type="submit"]:hover { background: var(--color-primary-hover); transform: translateY(-1px); }

/* ============================================================
   Comments
   ============================================================ */
.comments-area { max-width: 780px; margin: 0 auto; padding: var(--space-12) var(--container-pad); border-top: 1px solid var(--color-border); }
.comments-title { font-size: var(--text-2xl); font-weight: 700; letter-spacing: -0.02em; margin-bottom: var(--space-8); color: var(--color-text); }
.comment-list { list-style: none; padding: 0; margin: 0 0 var(--space-10); }
.comment-body { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); margin-bottom: var(--space-4); transition: border-color var(--transition-fast); }
.comment-body:hover { border-color: var(--color-border-hover); }
.comment-meta { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-4); }
.comment-author .fn { font-weight: 600; color: var(--color-text); font-style: normal; }
.comment-metadata { font-size: var(--text-xs); color: var(--color-text-light); }
.comment-content p { color: var(--color-text-muted); margin: 0; line-height: 1.7; }
.comment-respond { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: var(--space-8); }
.comment-reply-title { font-size: var(--text-2xl); font-weight: 700; margin-bottom: var(--space-6); letter-spacing: -0.02em; color: var(--color-text); }
.comment-form label { display: block; font-size: var(--text-sm); font-weight: 600; color: var(--color-text); margin-bottom: var(--space-2); }
.comment-form input[type="text"],.comment-form input[type="email"],.comment-form input[type="url"],.comment-form textarea { width: 100%; padding: var(--space-3) var(--space-4); border: 1.5px solid var(--color-border); border-radius: var(--radius-md); font-size: var(--text-base); color: var(--color-text); background: var(--color-background); transition: border-color var(--transition-fast),box-shadow var(--transition-fast); font-family: inherit; margin-bottom: var(--space-5); }
.comment-form input:focus,.comment-form textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
.comment-form textarea { min-height: 140px; resize: vertical; }
.comment-form .submit { background: var(--color-primary); color: #fff; border: none; padding: var(--space-3) var(--space-8); border-radius: var(--radius-md); font-size: var(--text-base); font-weight: 600; cursor: pointer; transition: all var(--transition-base); font-family: inherit; }
.comment-form .submit:hover { background: var(--color-primary-hover); transform: translateY(-1px); }

/* ============================================================
    Explorer Pages (Library, Study Notes, Past Papers, SLOs)
    ============================================================ */

.main-content.explorer-page {
    background-color: var(--color-surface);
    min-height: calc(100vh - var(--header-height));
}

body.dark-mode .main-content.explorer-page {
    background-color: #0F172A;
}

/* Hero Section */
.explorer-hero {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    padding: 3.5rem 0 6rem;
    color: #fff;
}

.explorer-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(ellipse at top right, rgba(255,255,255,0.1), transparent 50%);
}

.explorer-hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
}

.explorer-hero .hero-badge {
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
}

.explorer-hero .hero-tag {
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.8);
}

.explorer-hero h1 span {
    background: linear-gradient(90deg, #fff, rgba(255,255,255,0.8));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.filter-count {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

body.dark-mode .explorer-hero {
    background: linear-gradient(135deg, #020817 0%, #0f172a 50%, #1e3a8a 100%);
}

.explorer-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(ellipse at top right, rgba(96, 165, 250, 0.18), transparent 60%);
}

.explorer-hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(96, 165, 250, 0.3), transparent);
}

.explorer-hero .hero-container {
    max-width: 1536px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .explorer-hero .hero-container { padding: 0 1.5rem; }
}

@media (min-width: 1024px) {
    .explorer-hero .hero-container { padding: 0 2.5rem; }
}

.explorer-hero .hero-grid {
    display: grid;
    gap: 2.5rem;
}

@media (min-width: 1024px) {
    .explorer-hero .hero-grid {
        grid-template-columns: 1fr 22rem;
        align-items: center;
    }
}

.explorer-hero .hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.explorer-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-radius: 9999px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.08);
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(191, 219, 254, 0.8);
    backdrop-filter: blur(4px);
}

.explorer-hero .hero-badge i {
    color: rgba(147, 197, 253, 0.8);
}

.explorer-hero h1 {
    font-size: clamp(2.25rem, 5vw, 3rem);
    font-weight: 900;
    letter-spacing: -0.025em;
    line-height: 1.1;
}

.explorer-hero h1 span {
    background: linear-gradient(90deg, rgba(191, 219, 254, 1), rgba(103, 232, 249, 1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.explorer-hero .hero-description {
    max-width: 42rem;
    font-size: 1.125rem;
    line-height: 1.75;
    color: rgba(191, 219, 254, 0.75);
}

.explorer-hero .hero-description strong {
    color: #fff;
}

.explorer-hero .hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.explorer-hero .hero-tag {
    border-radius: 9999px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.08);
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(191, 219, 254, 0.8);
}

.explorer-hero .hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

@media (min-width: 1024px) {
    .explorer-hero .hero-stats {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 1280px) {
    .explorer-hero .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

.explorer-hero .stat-card {
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.06);
    padding: 1.25rem;
    backdrop-filter: blur(4px);
}

.explorer-hero .stat-card.full-width {
    grid-column: span 2;
}

@media (min-width: 1024px) {
    .explorer-hero .stat-card.full-width {
        grid-column: span 1;
    }
}

@media (min-width: 1280px) {
    .explorer-hero .stat-card.full-width {
        grid-column: span 2;
    }
}

.explorer-hero .stat-card .stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.75rem;
    font-size: 1.125rem;
}

.explorer-hero .stat-card .stat-icon.bg-blue {
    background: rgba(37, 99, 235, 0.4);
    color: rgba(191, 219, 254, 0.8);
}

.explorer-hero .stat-card .stat-icon.bg-pink {
    background: rgba(236, 72, 153, 0.4);
    color: rgba(249, 168, 212, 0.8);
}

.explorer-hero .stat-card .stat-icon.bg-yellow {
    background: rgba(234, 179, 8, 0.4);
    color: rgba(254, 240, 138, 0.8);
}

.explorer-hero .stat-card .stat-icon.bg-cyan {
    background: rgba(6, 182, 212, 0.4);
    color: rgba(103, 232, 249, 0.8);
}

.explorer-hero .stat-card .stat-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(147, 197, 253, 0.6);
}

.explorer-hero .stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 900;
    color: #fff;
}

.explorer-hero .stat-card .stat-current {
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Explorer Body */
.explorer-body {
    max-width: 1536px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

@media (min-width: 640px) {
    .explorer-body { padding: 2rem 1.5rem; }
}

@media (min-width: 1024px) {
    .explorer-body { padding: 2rem 2.5rem; }
}

/* Toolbar */
.explorer-toolbar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    padding: 1rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

@media (min-width: 1024px) {
    .explorer-toolbar {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.explorer-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.explorer-breadcrumbs a,
.explorer-breadcrumbs button {
    border-radius: 9999px;
    padding: 0.25rem 0.5rem;
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.explorer-breadcrumbs a:hover,
.explorer-breadcrumbs button:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.explorer-breadcrumbs .breadcrumb-sep {
    color: var(--color-text-light);
    opacity: 0.5;
}

.explorer-toolbar-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Search Box */
.explorer-search {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    padding: 1rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.explorer-search-input-wrap {
    position: relative;
}

.explorer-search-input-wrap i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-light);
    pointer-events: none;
}

.explorer-search input {
    width: 100%;
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 0.875rem 1rem 0.875rem 2.75rem;
    font-size: 1rem;
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.explorer-search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.explorer-search input::placeholder {
    color: var(--color-text-light);
}

.explorer-search-clear {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    display: none;
    border-radius: 0.5rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    transition: background-color var(--transition-fast);
}

.explorer-search-clear:hover {
    background: var(--color-surface-hover);
}

.explorer-search-clear.visible {
    display: block;
}

.explorer-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.explorer-filters select {
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 0.625rem 2.25rem 0.625rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 1rem;
}

.explorer-filters select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.explorer-filters .filter-reset {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-light);
    transition: background-color var(--transition-fast);
}

.explorer-filters .filter-reset:hover {
    background: var(--color-surface-hover);
}

.explorer-filters .filter-reset i {
    font-size: 0.75rem;
}

.explorer-filters .filter-count {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    border-radius: 0.75rem;
    background: var(--color-primary-light);
    padding: 0.625rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
}

.explorer-filters .filter-count i {
    font-size: 0.75rem;
}

/* Card Grid */
.explorer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .explorer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1280px) {
    .explorer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1536px) {
    .explorer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Cards */
.explorer-card {
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.explorer-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.explorer-card .card-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.explorer-card .card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 1rem;
    font-size: 1.5rem;
    flex-shrink: 0;
    transition: background-color var(--transition-base);
}

.explorer-card .card-icon.folder {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.explorer-card .card-icon.pdf {
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
}

.explorer-card .card-icon.notes {
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
}

.explorer-card .card-icon.papers {
    background: rgba(234, 179, 8, 0.1);
    color: #ca8a04;
}

.explorer-card .card-icon.slo {
    background: rgba(6, 182, 212, 0.1);
    color: #06b6d4;
}

.explorer-card:hover .card-icon.folder {
    background: rgba(37, 99, 235, 0.15);
}

.explorer-card:hover .card-icon.pdf {
    background: rgba(236, 72, 153, 0.15);
}

.explorer-card .card-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.explorer-card .card-type {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
}

.explorer-card .card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.explorer-card .card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.explorer-card .card-badge {
    display: inline-block;
    border-radius: 9999px;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.explorer-card .card-badge.blue {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.explorer-card .card-badge.pink {
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
}

.explorer-card .card-badge.gray {
    background: var(--color-surface);
    color: var(--color-text-light);
}

.explorer-card .card-badge.yellow {
    background: rgba(234, 179, 8, 0.1);
    color: #ca8a04;
}

.explorer-card .card-badge.cyan {
    background: rgba(6, 182, 212, 0.1);
    color: #06b6d4;
}

.explorer-card .card-path {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.explorer-card .card-description {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.explorer-card .card-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.25rem;
}

.explorer-card .card-actions a,
.explorer-card .card-actions button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex: 1;
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.explorer-card .card-actions a i,
.explorer-card .card-actions button i {
    font-size: 0.75rem;
}

.explorer-card .card-actions .btn-outline {
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    background: transparent;
}

.explorer-card .card-actions .btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.explorer-card .card-actions .btn-primary {
    background: var(--color-primary);
    color: #fff;
    border: 1px solid var(--color-primary);
}

.explorer-card .card-actions .btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

.explorer-card .card-actions .btn-dark {
    background: var(--color-text);
    color: #fff;
    border: 1px solid var(--color-text);
}

.explorer-card .card-actions .btn-dark:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.explorer-card .card-actions .btn-pink {
    background: linear-gradient(135deg, #ec4899, #f43f5e);
    color: #fff;
    border: none;
}

.explorer-card .card-actions .btn-pink:hover {
    background: linear-gradient(135deg, #db2777, #e11d48);
}

/* State Messages */
.explorer-state {
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    padding: 2.5rem 1.5rem;
    text-align: center;
    margin-top: 1.5rem;
}

.explorer-state .state-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    margin: 0 auto;
    border-radius: 1rem;
    background: var(--color-surface);
    font-size: 1.875rem;
    color: var(--color-text-light);
}

.explorer-state h3 {
    margin-top: 1rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.explorer-state p {
    margin-top: 0.5rem;
    max-width: 24rem;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-text-muted);
}

.explorer-state.error {
    border-color: #fecaca;
    background: #fef2f2;
}

body.dark-mode .explorer-state.error {
    border-color: #7f1d1d;
    background: rgba(127, 29, 29, 0.3);
}

.explorer-state.error .state-icon {
    background: #fee2e2;
    color: #ef4444;
}

body.dark-mode .explorer-state.error .state-icon {
    background: rgba(127, 29, 29, 0.5);
    color: #fca5a5;
}

.explorer-state.error h3 {
    color: #b91c1c;
}

body.dark-mode .explorer-state.error h3 {
    color: #fca5a5;
}

.explorer-state.error p {
    color: #991b1b;
}

body.dark-mode .explorer-state.error p {
    color: #fca5a5;
}

.explorer-state.empty {
    display: none;
}

.explorer-state .state-action {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.25rem;
    border-radius: 0.75rem;
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: #fff;
    transition: background-color var(--transition-fast);
}

.explorer-state.error .state-action {
    background: #ef4444;
}

.explorer-state.error .state-action:hover {
    background: #dc2626;
}

.explorer-state .state-action.btn-blue {
    background: var(--color-primary);
}

.explorer-state .state-action.btn-blue:hover {
    background: var(--color-primary-hover);
}

.explorer-state .state-action.btn-pink {
    background: linear-gradient(135deg, #ec4899, #f43f5e);
}

.explorer-state .state-action.btn-pink:hover {
    background: linear-gradient(135deg, #db2777, #e11d48);
}

/* SEO Content Block */
.explorer-seo {
    margin-top: 3rem;
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 2rem;
}

.explorer-seo h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text);
}

.explorer-seo p {
    margin-top: 1rem;
    max-width: 48rem;
    color: var(--color-text-muted);
    line-height: 1.75;
}

.explorer-seo p strong {
    color: var(--color-text);
}

.explorer-seo .seo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.25rem;
}

.explorer-seo .seo-tag {
    display: inline-block;
    border-radius: 9999px;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.explorer-seo.blue .seo-tag {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.explorer-seo.pink .seo-tag {
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
}

.explorer-seo.yellow .seo-tag {
    background: rgba(234, 179, 8, 0.1);
    color: #ca8a04;
}

.explorer-seo.cyan .seo-tag {
    background: rgba(6, 182, 212, 0.1);
    color: #06b6d4;
}

/* Utility */
.hidden {
    display: none !important;
}

/* Button styles */
.btn-back,
.btn-root {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-back:hover,
.btn-root:hover {
    background: var(--color-surface-hover);
}

.btn-root {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-root:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

/* Toolbar info */
.explorer-toolbar-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.explorer-toolbar-info .toolbar-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Terms Page Styles */
.terms-page {
    background: var(--color-primary-light);
    padding: 3.5rem 0;
}

body.dark-mode .terms-page {
    background: #0f172a;
}

.terms-page .terms-container {
    max-width: 56rem;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .terms-page .terms-container { padding: 0 1.5rem; }
}

@media (min-width: 640px) {
    .terms-page .terms-container {
        padding: 0 1.5rem;
    }
}

.terms-header {
    text-align: center;
    margin-bottom: 3rem;
}

.terms-header .terms-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
}

.terms-content section .section-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 0.5rem;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 700;
    font-family: monospace;
    flex-shrink: 0;
}

.terms-header h1 {
    font-size: clamp(2.25rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--color-text);
}

body.dark-mode .terms-header h1 {
    color: #f1f5f9;
}

.terms-header .terms-date {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.terms-toc {
    border-radius: 1rem;
    border: 1px solid rgba(236, 72, 153, 0.2);
    background: var(--color-background);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.terms-toc .toc-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #ec4899;
    margin-bottom: 1rem;
}

body.dark-mode .terms-toc .toc-label {
    color: #f9a8d4;
}

.terms-toc nav {
    display: grid;
    gap: 0.5rem;
    font-size: 0.875rem;
}

@media (min-width: 640px) {
    .terms-toc nav {
        grid-template-columns: repeat(2, 1fr);
    }
}

.terms-toc nav a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.terms-toc nav a:hover {
    color: #ec4899;
}

body.dark-mode .terms-toc nav a:hover {
    color: #f9a8d4;
}

.terms-toc nav a span {
    font-size: 0.75rem;
    color: #f472b6;
    font-family: monospace;
}

body.dark-mode .terms-toc nav a span {
    color: #f9a8d4;
}

.terms-content {
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.terms-content section {
    padding: 2rem 2.5rem;
}

body.dark-mode .terms-content section {
    padding: 2rem;
}

@media (min-width: 640px) {
    .terms-content section {
        padding: 2.5rem 3rem;
    }
}

.terms-content section:first-child {
    border-top: none;
}

.terms-content section + section {
    border-top: 1px solid var(--color-border);
}

body.dark-mode .terms-content section + section {
    border-top-color: #334155;
}

.terms-content section .section-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 0.5rem;
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
    font-size: 0.75rem;
    font-weight: 700;
    font-family: monospace;
    flex-shrink: 0;
}

body.dark-mode .terms-content section .section-num {
    background: rgba(236, 72, 153, 0.2);
    color: #f9a8d4;
}

.terms-content section h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.terms-content section .section-content {
    margin-left: 3rem;
    margin-top: 1.25rem;
    max-width: none;
}

.terms-content section .section-content p {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1em;
}

.terms-content section .section-content ul {
    list-style: revert;
    padding-left: 1.5em;
    margin-bottom: 1em;
}

.terms-content section .section-content li {
    margin-bottom: 0.5em;
    color: var(--color-text-muted);
}

.terms-content section .section-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

.terms-content section .section-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.terms-agreement {
    margin-top: 2rem;
    border-radius: 1rem;
    background: var(--color-primary-light);
    border: 1px solid rgba(37, 99, 235, 0.2);
    padding: 1.5rem;
    text-align: center;
}

body.dark-mode .terms-agreement {
    background: rgba(37, 99, 235, 0.1);
}

.terms-agreement p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.terms-agreement a {
    font-weight: 600;
    color: var(--color-primary);
}

.terms-back {
    margin-top: 1.5rem;
    text-align: center;
}

.terms-back a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
}

.terms-back a i {
    font-size: 0.75rem;
}

/* Contact Page */
.explorer-form {
    grid-column: span 3;
}

.explorer-form .terms-content {
    padding: 2rem;
}

.explorer-form .form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.explorer-form .form-group {
    margin-bottom: 1rem;
}

.explorer-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.explorer-form input,
.explorer-form textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    color: var(--color-text);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.explorer-form input:focus,
.explorer-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.explorer-form input::placeholder,
.explorer-form textarea::placeholder {
    color: var(--color-text-light);
}

.explorer-form .btn-primary {
    width: 100%;
    justify-content: center;
}

.explorer-form #contact-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 0.75rem;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 500;
}

.explorer-form #contact-status.hidden {
    display: none;
}

.explorer-sidebar {
    grid-column: span 2;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.explorer-sidebar .terms-content {
    padding: 1.5rem;
}

.explorer-sidebar h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.75rem;
    background: var(--color-primary-light);
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
    margin-bottom: 0.25rem;
}

.contact-link {
    font-size: 0.875rem;
    color: var(--color-primary);
    text-decoration: underline;
    font-weight: 500;
}

.contact-value {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    white-space: pre-line;
}

.contact-location {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.map-container {
    height: 13rem;
    border-radius: 0.75rem;
    overflow: hidden;
}

.quick-links {
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
    padding: 1.75rem;
    color: #fff;
}

.quick-links h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: #fff;
}

.quick-links-list {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.quick-links-list a {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.quick-links-list a:hover {
    color: #fff;
}

.quick-links-list a i {
    width: 1rem;
    text-align: center;
}

@media (max-width: 1023px) {
    .explorer-form {
        grid-column: span 5;
    }
    .explorer-sidebar {
        grid-column: span 5;
    }
}

/* ============================================================
    Footer
    ============================================================ */
.site-footer { background: #0F172A; border-top: 1px solid #1E293B; margin-top: auto; }
body.dark-mode .site-footer { background: #020817; border-top-color: #1E293B; }
.site-footer p,.site-footer a,.site-footer h1,.site-footer h2,.site-footer h3,.site-footer h4,.site-footer h5,.site-footer h6,.site-footer .widget-title,.site-footer .site-title { color: #CBD5E1; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: #60A5FA; }
.site-footer .widget-title { color: #F1F5F9 !important; }
.site-footer .container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-pad); }
.footer-top { padding: var(--space-10) 0; border-bottom: 1px solid #1E293B; }
.footer-middle { padding: var(--space-16) 0; }
.footer-columns { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: clamp(var(--space-8),4vw,var(--space-16)); align-items: start; }
.footer-col-title { font-size: var(--text-xs) !important; font-weight: 700 !important; color: #F1F5F9 !important; margin-bottom: var(--space-5); text-transform: uppercase; letter-spacing: 0.09em; }
.footer-logo { max-width: 140px; margin-bottom: var(--space-5); filter: brightness(0) invert(1); opacity: 0.85; }
.footer-about-text { font-size: var(--text-sm) !important; color: #64748B !important; line-height: 1.75; margin-bottom: var(--space-6); }
.footer-social { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.footer-social a { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: #1E293B; border: 1px solid #334155; border-radius: var(--radius-md); color: #94A3B8 !important; font-size: 0.875rem; transition: all var(--transition-base); }
.footer-social a:hover { background: #2563EB; border-color: #2563EB; color: #fff !important; transform: translateY(-2px); }
.footer-menu-links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-3); }
.footer-menu-links a { color: #64748B !important; font-size: var(--text-sm) !important; display: flex; align-items: center; gap: var(--space-2); transition: all var(--transition-fast); }
.footer-menu-links a::before { content: ""; display: inline-block; width: 4px; height: 4px; background: #334155; border-radius: 50%; flex-shrink: 0; transition: all var(--transition-fast); }
.footer-menu-links a:hover { color: #60A5FA !important; transform: translateX(4px); }
.footer-menu-links a:hover::before { background: #60A5FA; }
.footer-contact-item { display: flex; align-items: center; gap: var(--space-3); color: #64748B !important; font-size: var(--text-sm) !important; margin-bottom: var(--space-4); transition: color var(--transition-fast); }
.footer-contact-item:hover { color: #60A5FA !important; }
.footer-contact-item i { width: 18px; flex-shrink: 0; opacity: 0.6; }
.footer-map { margin-bottom: var(--space-4); border-radius: var(--radius-md); overflow: hidden; border: 1px solid #1E293B; }
.footer-map iframe { width: 100%; height: 140px; border: none; display: block; }
.footer-widget { word-wrap: break-word; }
.footer-bottom { padding: var(--space-5) 0; border-top: 1px solid #1E293B; }
.footer-bottom .container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-pad); }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); flex-wrap: wrap; }
.theme-credit { font-size: var(--text-xs) !important; color: #475569 !important; }
.footer-menu-list { display: flex; list-style: none; gap: var(--space-6); flex-wrap: wrap; }
.footer-menu-list a { color: #475569 !important; font-size: var(--text-xs) !important; transition: color var(--transition-fast); }
.footer-menu-list a:hover { color: #60A5FA !important; }

/* ============================================================
   Responsive Breakpoints
   ============================================================ */
@media (max-width: 1024px) { .site-header { display: none; } .mobile-header { display: flex; } }
@media (min-width: 1025px) { .mobile-header,.mobile-menu,.mobile-menu-overlay { display: none !important; } }
@media (max-width: 960px) { .footer-columns { grid-template-columns: 1fr 1fr; gap: var(--space-10); } }
@media (max-width: 768px) {
    .posts-navigation,.post-navigation { grid-template-columns: 1fr; }
    .posts-navigation .nav-next,.post-navigation .nav-next { align-items: flex-start; text-align: left; }
    .footer-bottom-inner { flex-direction: column; text-align: center; }
    .footer-menu-list { justify-content: center; }
}
@media (max-width: 600px) { .footer-columns { grid-template-columns: 1fr; gap: var(--space-8); } .posts-grid { grid-template-columns: 1fr; } }
@media (max-width: 480px) {
    .single-post-wrap,.page-wrap,.archive-wrap,.search-wrap { padding-top: var(--space-8); padding-bottom: var(--space-8); }
    .error-404-actions { flex-direction: column; width: 100%; }
    .error-404-actions .btn { width: 100%; }
}

/* ── Reduced Motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *,*::before,*::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
    .post-card:hover,.btn:hover,.footer-social a:hover,.footer-menu-links a:hover { transform: none; }
}