/* ============================================================
   ASTTO Academic Publication Portal — Main Stylesheet
   Color Palette: Deep Blue #0B3D91 | Gold #D4AF37 | Emerald #0FA958
   ============================================================ */

/* ─── CSS Variables ──────────────────────────────────────── */
:root {
  --blue:      #0B3D91;
  --blue-dark: #07296A;
  --blue-light:#1A52B3;
  --gold:      #D4AF37;
  --gold-dark: #B8962E;
  --gold-light:#E8CC6A;
  --emerald:   #0FA958;
  --emerald-dk:#0C8A48;
  --bg:        #F8FAFC;
  --dark:      #0F172A;
  --white:     #FFFFFF;
  --gray-50:   #F9FAFB;
  --gray-100:  #F3F4F6;
  --gray-200:  #E5E7EB;
  --gray-300:  #D1D5DB;
  --gray-400:  #9CA3AF;
  --gray-500:  #6B7280;
  --gray-600:  #4B5563;
  --gray-700:  #374151;
  --gray-800:  #1F2937;
  --gray-900:  #111827;
  --text:      #1E293B;
  --text-muted:#64748B;
  --border:    #E2E8F0;
  --radius-sm: 8px;
  --radius:    12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow:    0 4px 16px rgba(11,61,145,.10), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 40px rgba(11,61,145,.15), 0 4px 12px rgba(0,0,0,.08);
  --shadow-xl: 0 20px 60px rgba(11,61,145,.18);
  --glass:     rgba(255,255,255,.75);
  --glass-dark:rgba(15,23,42,.8);
  --transition: .3s cubic-bezier(.4,0,.2,1);
  --font-sans: 'Poppins', 'Inter', sans-serif;
  --font-serif:'Merriweather', Georgia, serif;
  --font-ui:   'Inter', 'Poppins', sans-serif;
}

/* Dark Mode */
[data-theme="dark"] {
  --bg:      #0A0F1E;
  --white:   #1E2A42;
  --text:    #E2E8F0;
  --text-muted:#94A3B8;
  --border:  #2D3748;
  --gray-50: #111827;
  --gray-100:#1A2540;
  --gray-200:#243050;
  --glass:   rgba(30,42,66,.85);
}

/* ─── Reset & Base ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--gold); }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; }

/* ─── Utilities ──────────────────────────────────────────── */
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5rem 0; }
.section-sm { padding: 3rem 0; }
.text-center { text-align: center; }
.hidden-mobile { display: block; }
.badge { display: inline-flex; align-items: center; gap: .3rem; padding: .3rem .75rem; border-radius: 100px; font-size: .75rem; font-weight: 600; }
.badge-blue { background: rgba(11,61,145,.12); color: var(--blue); }
.badge-gold { background: rgba(212,175,55,.15); color: var(--gold-dark); }
.badge-emerald { background: rgba(15,169,88,.12); color: var(--emerald-dk); }

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .75rem 1.75rem; border-radius: var(--radius); font-weight: 600;
  font-size: .95rem; transition: all var(--transition); cursor: pointer;
  border: 2px solid transparent; white-space: nowrap;
}
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-dark); color: var(--white); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(11,61,145,.35); }
.btn-gold { background: var(--gold); color: var(--dark); }
.btn-gold:hover { background: var(--gold-dark); color: var(--dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(212,175,55,.4); }
.btn-emerald { background: var(--emerald); color: var(--white); }
.btn-emerald:hover { background: var(--emerald-dk); color: var(--white); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--blue); border-color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: var(--white); }
.btn-outline-gold { background: transparent; color: var(--gold-dark); border-color: var(--gold); }
.btn-outline-gold:hover { background: var(--gold); color: var(--dark); }
.btn-sm { padding: .5rem 1.25rem; font-size: .85rem; }
.btn-lg { padding: 1rem 2.5rem; font-size: 1.05rem; }

/* ─── Section Header ─────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-badge { display: inline-flex; align-items: center; gap: .4rem; background: rgba(11,61,145,.08); color: var(--blue); padding: .4rem 1.2rem; border-radius: 100px; font-size: .82rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; margin-bottom: 1rem; }
.section-title { font-family: var(--font-serif); font-size: clamp(1.8rem,4vw,2.8rem); font-weight: 700; color: var(--text); line-height: 1.25; margin-bottom: 1rem; }
.section-title span { color: var(--blue); }
.section-divider { display: flex; align-items: center; justify-content: center; gap: .5rem; margin-bottom: 1.25rem; }
.section-divider .line { height: 2px; width: 50px; background: var(--gold); border-radius: 2px; }
.section-divider .dot { width: 8px; height: 8px; background: var(--gold); border-radius: 50%; }
.section-desc { color: var(--text-muted); font-size: 1.05rem; max-width: 640px; margin: 0 auto; }

/* ─── Top Toolbar ────────────────────────────────────────── */
.top-toolbar {
  background: var(--blue-dark);
  color: rgba(255,255,255,.9);
  padding: .45rem 0;
  font-size: .82rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.top-toolbar .container { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.toolbar-left, .toolbar-right { display: flex; align-items: center; gap: 1rem; }
.toolbar-item { color: rgba(255,255,255,.9); display: flex; align-items: center; gap: .35rem; }
.toolbar-item:hover { color: var(--gold); }
.toolbar-item i { font-size: .78rem; }
.social-icon { width: 26px; height: 26px; border-radius: 50%; background: rgba(255,255,255,.12); color: rgba(255,255,255,.9); display: flex; align-items: center; justify-content: center; font-size: .75rem; transition: all var(--transition); }
.social-icon:hover { background: var(--gold); color: var(--dark); }
.dark-mode-btn { width: 26px; height: 26px; border-radius: 50%; background: rgba(255,255,255,.12); color: rgba(255,255,255,.9); display: flex; align-items: center; justify-content: center; font-size: .75rem; transition: all var(--transition); }
.dark-mode-btn:hover { background: var(--gold); color: var(--dark); }

/* ─── Navbar ─────────────────────────────────────────────── */
.navbar {
  position: sticky; top: 0; z-index: 1000;
  background: var(--glass);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid rgba(255,255,255,.4);
  box-shadow: 0 4px 30px rgba(11,61,145,.08);
  transition: all var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-lg); }
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.nav-logo { display: flex; align-items: center; gap: .75rem; }
.site-logo-image { display:block; max-width:220px; max-height:52px; width:auto; height:auto; object-fit:contain; }
.logo-icon { width: 42px; height: 42px; background: linear-gradient(135deg, var(--blue), var(--blue-light)); color: var(--white); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; box-shadow: 0 4px 12px rgba(11,61,145,.3); }
.logo-name { display: block; font-weight: 700; font-size: 1rem; color: var(--blue); line-height: 1.2; }
.logo-subtitle { display: block; font-size: .72rem; color: var(--text-muted); font-weight: 400; }
.nav-menu { display: flex; align-items: center; gap: .25rem; }
.nav-link { padding: .5rem .9rem; border-radius: var(--radius-sm); font-weight: 500; font-size: .9rem; color: var(--text); transition: all var(--transition); position: relative; }
.nav-link:hover, .nav-link.active { color: var(--blue); background: rgba(11,61,145,.07); }
.nav-link.active::after { content:''; position:absolute; bottom:2px; left:50%; transform:translateX(-50%); width:20px; height:2px; background:var(--gold); border-radius:2px; }
.nav-dropdown { position: relative; }
.nav-dropdown > .nav-link { display: inline-flex; align-items: center; gap: .45rem; }
.nav-submenu {
  position: absolute; top: calc(100% + .5rem); left: 0; min-width: 180px;
  background: rgba(255,255,255,.96); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: .5rem; opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all var(--transition); z-index: 2000;
}
.nav-dropdown:hover .nav-submenu,
.nav-dropdown:focus-within .nav-submenu { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-sub-link {
  display: block; padding: .7rem .9rem; border-radius: var(--radius-sm); color: var(--text); font-size: .88rem; font-weight: 500;
}
.nav-sub-link:hover { background: rgba(11,61,145,.06); color: var(--blue); }
.nav-search-btn { width: 36px; height: 36px; border-radius: var(--radius-sm); background: rgba(11,61,145,.08); color: var(--blue); display: flex; align-items: center; justify-content: center; transition: all var(--transition); }
.nav-search-btn:hover { background: var(--blue); color: var(--white); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: .5rem; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--transition); }

/* Search Overlay */
.search-overlay { display: none; padding: 1rem 0; background: var(--glass); backdrop-filter: blur(20px); border-top: 1px solid var(--border); }
.search-overlay.open { display: block; }
.search-form { display: flex; align-items: center; gap: .75rem; }
.search-input { flex: 1; padding: .75rem 1.25rem; border: 2px solid var(--border); border-radius: var(--radius); background: var(--bg); color: var(--text); font-size: 1rem; outline: none; transition: border-color var(--transition); }
.search-input:focus { border-color: var(--blue); }
.search-submit { padding: .75rem 1.5rem; background: var(--blue); color: var(--white); border-radius: var(--radius); font-weight: 600; transition: all var(--transition); }
.search-submit:hover { background: var(--blue-dark); }
.search-close { padding: .75rem; color: var(--text-muted); border-radius: var(--radius); }

/* ─── Hero Section ───────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex; align-items: center;
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 50%, #1A52B3 100%);
  overflow: hidden;
  padding: 5rem 0;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 900"><circle cx="1200" cy="200" r="400" fill="rgba(255,255,255,.03)"/><circle cx="200" cy="700" r="300" fill="rgba(212,175,55,.05)"/></svg>') no-repeat center/cover;
}
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; position: relative; z-index: 2; }
.hero-content { color: var(--white); }
.hero-badge { display: inline-flex; align-items: center; gap: .4rem; background: rgba(212,175,55,.2); border: 1px solid rgba(212,175,55,.4); color: var(--gold-light); padding: .45rem 1.2rem; border-radius: 100px; font-size: .82rem; font-weight: 600; margin-bottom: 1.5rem; letter-spacing: .05em; }
.hero-title { font-family: var(--font-serif); font-size: clamp(2.2rem,5vw,3.5rem); font-weight: 700; line-height: 1.2; margin-bottom: 1rem; }
.hero-title .highlight { color: var(--gold); }
.hero-typing { font-size: clamp(1rem,2.5vw,1.3rem); color: rgba(255,255,255,.85); margin-bottom: 1rem; min-height: 2rem; }
.hero-typing .typed-cursor { color: var(--gold); animation: blink 1s infinite; }
.hero-desc { color: rgba(255,255,255,.75); font-size: 1.05rem; margin-bottom: 2rem; max-width: 500px; }
.hero-btns { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.5rem; }
.hero-stats { display: flex; gap: 2rem; }
.hero-stat { text-align: center; }
.hero-stat .stat-number { font-size: 2rem; font-weight: 800; color: var(--gold); display: block; font-family: var(--font-sans); }
.hero-stat .stat-label { font-size: .8rem; color: rgba(255,255,255,.7); }
.hero-image-wrap { position: relative; display: flex; justify-content: center; }
.hero-image-frame {
  position: relative; width: 400px; height: 480px;
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-xl) 0;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
  border: 4px solid rgba(212,175,55,.3);
}
.hero-image-frame img { width: 100%; height: 100%; object-fit: cover; }
.hero-image-frame::before {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(to bottom, transparent 60%, rgba(11,61,145,.6));
}
.hero-badge-float {
  position: absolute; bottom: -1rem; left: -1.5rem;
  background: var(--white); border-radius: var(--radius); padding: 1rem 1.25rem;
  box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: .75rem;
  z-index: 10; animation: float 3s ease-in-out infinite;
}
.hero-badge-float .hbf-icon { width: 40px; height: 40px; background: linear-gradient(135deg,var(--gold),var(--gold-dark)); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--dark); font-size: 1rem; }
.hero-badge-float .hbf-text strong { display: block; font-size: .9rem; color: var(--text); }
.hero-badge-float .hbf-text span { font-size: .75rem; color: var(--text-muted); }

/* ─── Stats Section ──────────────────────────────────────── */
.stats-section { background: var(--white); padding: 3.5rem 0; border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.stat-card {
  text-align: center; padding: 2rem 1.5rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(11,61,145,.04), rgba(11,61,145,.01));
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(11,61,145,.2); }
.stat-icon { width: 56px; height: 56px; border-radius: var(--radius); background: linear-gradient(135deg, var(--blue), var(--blue-light)); color: var(--white); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; margin: 0 auto 1rem; box-shadow: 0 6px 20px rgba(11,61,145,.25); }
.stat-number { font-size: 2.5rem; font-weight: 800; color: var(--blue); font-family: var(--font-sans); display: block; }
.stat-label { color: var(--text-muted); font-size: .9rem; margin-top: .25rem; }

/* ─── About Preview ──────────────────────────────────────── */
.about-preview { background: var(--bg); }
.about-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 5rem; align-items: center; }
.about-image-wrap { position: relative; }
.about-img-main { border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); width: 100%; max-height: 520px; object-fit: cover; object-position: top; }
.about-badge-float {
  position: absolute; top: 2rem; right: -1.5rem;
  background: var(--white); border-radius: var(--radius); padding: 1rem 1.25rem;
  box-shadow: var(--shadow-lg); text-align: center; animation: float 4s ease-in-out infinite .5s;
  border: 2px solid var(--border);
}
.about-badge-float .abf-number { font-size: 2rem; font-weight: 800; color: var(--gold-dark); display: block; }
.about-badge-float .abf-label { font-size: .75rem; color: var(--text-muted); }
.about-content { }
.about-content h2 { font-family: var(--font-serif); font-size: clamp(1.8rem,3.5vw,2.5rem); color: var(--text); margin-bottom: 1.25rem; }
.about-content h2 span { color: var(--blue); }
.about-content p { color: var(--text-muted); margin-bottom: 1.25rem; font-size: 1rem; }
.about-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.5rem 0; }
.about-tag { padding: .4rem 1rem; background: rgba(11,61,145,.07); color: var(--blue); border-radius: 100px; font-size: .82rem; font-weight: 500; }

/* ─── Publication Cards ──────────────────────────────────── */
.publications-section { background: var(--white); }
.pub-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.pub-card {
  background: var(--white); border-radius: var(--radius-lg);
  border: 1px solid var(--border); overflow: hidden;
  transition: all var(--transition); display: flex; flex-direction: column;
  box-shadow: var(--shadow-sm);
}
.pub-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(11,61,145,.2); }
.pub-card-image { position: relative; overflow: hidden; height: 220px; }
.pub-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.pub-card:hover .pub-card-image img { transform: scale(1.05); }
.pub-card-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(11,61,145,.6), transparent); opacity: 0; transition: opacity var(--transition); }
.pub-card:hover .pub-card-overlay { opacity: 1; }
.pub-card-badge { position: absolute; top: .75rem; left: .75rem; }
.pub-card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.pub-card-category { font-size: .75rem; color: var(--blue); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; margin-bottom: .5rem; }
.pub-card-title { font-family: var(--font-serif); font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: .75rem; line-height: 1.4; flex: 1; }
.pub-card-desc { color: var(--text-muted); font-size: .88rem; line-height: 1.6; margin-bottom: 1rem; }
.pub-card-meta { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; font-size: .82rem; color: var(--text-muted); }
.pub-card-meta i { color: var(--blue); }
.pub-card-price { font-size: 1.2rem; font-weight: 800; color: var(--blue); }
.pub-card-price .original-price { text-decoration: line-through; color: var(--text-muted); font-size: .9rem; font-weight: 400; margin-left: .5rem; }
.pub-card-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1rem; }

/* ─── Research Areas ─────────────────────────────────────── */
.research-section { background: var(--bg); }
.research-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.research-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 2rem;
  border: 1px solid var(--border); transition: all var(--transition);
  display: flex; flex-direction: column; gap: 1rem;
  box-shadow: var(--shadow-sm);
}
.research-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--blue); }
.rc-icon { width: 56px; height: 56px; border-radius: var(--radius); background: linear-gradient(135deg, rgba(11,61,145,.1), rgba(11,61,145,.05)); color: var(--blue); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; transition: all var(--transition); }
.research-card:hover .rc-icon { background: var(--blue); color: var(--white); transform: scale(1.1); }
.rc-title { font-size: 1.05rem; font-weight: 700; color: var(--text); }
.rc-desc { color: var(--text-muted); font-size: .9rem; line-height: 1.6; flex: 1; }
.rc-link { display: inline-flex; align-items: center; gap: .4rem; color: var(--blue); font-size: .88rem; font-weight: 600; transition: gap var(--transition); }
.rc-link:hover { gap: .75rem; color: var(--gold-dark); }

/* ─── Testimonials ───────────────────────────────────────── */
.testimonials-section { background: linear-gradient(135deg, var(--blue-dark), var(--blue)); padding: 5rem 0; }
.testimonials-section .section-title { color: var(--white); }
.testimonials-section .section-desc { color: rgba(255,255,255,.75); }
.testimonials-section .section-badge { background: rgba(212,175,55,.2); color: var(--gold-light); }
.testimonials-track { overflow: hidden; position: relative; }
.testimonials-carousel { display: flex; gap: 1.5rem; transition: transform .4s ease; }
.testimonial-card {
  min-width: calc(33.333% - 1rem); background: rgba(255,255,255,.08);
  backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg); padding: 2rem;
  flex-shrink: 0; color: var(--white);
}
.testimonial-card .stars { display: flex; gap: .2rem; color: var(--gold); margin-bottom: 1rem; }
.testimonial-content { font-style: italic; color: rgba(255,255,255,.85); line-height: 1.8; margin-bottom: 1.5rem; font-family: var(--font-serif); }
.testimonial-author { display: flex; align-items: center; gap: .75rem; }
.testimonial-avatar { width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg,var(--gold),var(--gold-dark)); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; font-weight: 700; color: var(--dark); overflow: hidden; flex-shrink: 0; }
.testimonial-avatar img { width: 100%; height: 100%; object-fit: cover; }
.testimonial-name { font-weight: 600; }
.testimonial-role { font-size: .82rem; color: rgba(255,255,255,.65); }
.carousel-controls { display: flex; justify-content: center; gap: .75rem; margin-top: 2rem; }
.carousel-btn { width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.15); color: var(--white); display: flex; align-items: center; justify-content: center; transition: all var(--transition); border: 1px solid rgba(255,255,255,.25); }
.carousel-btn:hover { background: var(--gold); color: var(--dark); border-color: var(--gold); }

/* ─── News Section ───────────────────────────────────────── */
.news-section { background: var(--white); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.news-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); transition: all var(--transition); box-shadow: var(--shadow-sm); }
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.news-card-image { height: 200px; overflow: hidden; position: relative; }
.news-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-card:hover .news-card-image img { transform: scale(1.06); }
.news-card-type { position: absolute; top: .75rem; left: .75rem; }
.news-card-body { padding: 1.5rem; }
.news-card-date { font-size: .8rem; color: var(--text-muted); margin-bottom: .5rem; display: flex; align-items: center; gap: .4rem; }
.news-card-title { font-family: var(--font-serif); font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: .75rem; line-height: 1.45; }
.news-card-excerpt { color: var(--text-muted); font-size: .88rem; margin-bottom: 1rem; }
.news-card-link { display: inline-flex; align-items: center; gap: .4rem; color: var(--blue); font-size: .88rem; font-weight: 600; }
.news-card-link:hover { gap: .75rem; color: var(--gold-dark); }

/* ─── Newsletter ─────────────────────────────────────────── */
.newsletter-section { background: var(--bg); padding: 4rem 0; }
.newsletter-card {
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  border-radius: var(--radius-xl); padding: 3rem 4rem;
  display: flex; align-items: center; gap: 4rem;
  box-shadow: var(--shadow-xl); overflow: hidden; position: relative;
}
.newsletter-card::before { content:''; position:absolute; top:-80px; right:-80px; width:250px; height:250px; border-radius:50%; background:rgba(212,175,55,.1); }
.newsletter-content { flex: 1; color: var(--white); }
.newsletter-icon { font-size: 2.5rem; margin-bottom: 1rem; color: var(--gold); }
.newsletter-content h3 { font-size: 1.6rem; font-weight: 700; margin-bottom: .75rem; }
.newsletter-content p { color: rgba(255,255,255,.8); }
.newsletter-form { flex: 1.5; }
.newsletter-input-group { display: flex; flex-direction: column; gap: .75rem; }
.newsletter-input { padding: .85rem 1.25rem; border-radius: var(--radius); border: 2px solid rgba(255,255,255,.2); background: rgba(255,255,255,.12); color: var(--white); font-size: .95rem; outline: none; transition: border-color var(--transition); }
.newsletter-input::placeholder { color: rgba(255,255,255,.55); }
.newsletter-input:focus { border-color: var(--gold); }
.newsletter-btn { align-self: flex-start; }
.newsletter-note { color: rgba(255,255,255,.6); font-size: .8rem; margin-top: .5rem; display: flex; align-items: center; gap: .4rem; }

/* ─── Footer ─────────────────────────────────────────────── */
.footer { background: var(--dark); color: rgba(255,255,255,.8); padding: 5rem 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 3rem; margin-bottom: 3rem; }
.footer-logo { display: flex; align-items: center; gap: .6rem; color: var(--white); font-size: 1.1rem; font-weight: 700; margin-bottom: 1rem; }
.footer-logo i { color: var(--gold); font-size: 1.3rem; }
.footer-bio { color: rgba(255,255,255,.6); font-size: .9rem; margin-bottom: 1.5rem; line-height: 1.7; }
.footer-socials { display: flex; gap: .6rem; }
.footer-socials a { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,.08); color: rgba(255,255,255,.7); display: flex; align-items: center; justify-content: center; font-size: .85rem; transition: all var(--transition); }
.footer-socials a:hover { background: var(--gold); color: var(--dark); }
.footer-heading { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 1.5rem; position: relative; padding-bottom: .6rem; }
.footer-heading::after { content:''; position:absolute; bottom:0; left:0; width:32px; height:2px; background:var(--gold); border-radius:2px; }
.footer-links li { margin-bottom: .6rem; }
.footer-links a { color: rgba(255,255,255,.65); font-size: .9rem; display: flex; align-items: center; gap: .5rem; transition: all var(--transition); }
.footer-links a:hover { color: var(--gold); transform: translateX(4px); }
.footer-links i { font-size: .75rem; color: var(--gold); }
.footer-view-all { display: inline-flex; align-items: center; gap: .4rem; color: var(--gold); font-size: .85rem; font-weight: 600; margin-top: .75rem; }
.footer-contact-list li { display: flex; align-items: flex-start; gap: .75rem; margin-bottom: .9rem; color: rgba(255,255,255,.65); font-size: .9rem; }
.footer-contact-list i { color: var(--gold); margin-top: .2rem; flex-shrink: 0; width: 14px; }
.footer-contact-list a { color: rgba(255,255,255,.65); }
.footer-contact-list a:hover { color: var(--gold); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-top: 2rem; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer-bottom p { font-size: .85rem; color: rgba(255,255,255,.5); }
.footer-bottom-right { display: flex; gap: 1.5rem; }
.footer-bottom-right a { color: rgba(255,255,255,.5); font-size: .82rem; }
.footer-bottom-right a:hover { color: var(--gold); }

/* ─── WhatsApp Float ─────────────────────────────────────── */
.whatsapp-float {
  position: fixed; left: 1.5rem; bottom: 2rem; z-index: 9999;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; box-shadow: 0 6px 24px rgba(37,211,102,.4);
  transition: all var(--transition); animation: pulse-green 2s ease-in-out infinite;
}
.whatsapp-float:hover { transform: scale(1.12); box-shadow: 0 10px 32px rgba(37,211,102,.5); color: var(--white); }
.whatsapp-tooltip {
  position: absolute; left: 120%; bottom: 50%; transform: translateY(50%);
  background: var(--dark); color: var(--white); padding: .4rem .9rem; border-radius: var(--radius-sm);
  font-size: .82rem; white-space: nowrap; opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.whatsapp-float:hover .whatsapp-tooltip { opacity: 1; }

/* ─── Back to Top ────────────────────────────────────────── */
.back-to-top {
  position: fixed; right: 1.5rem; bottom: 2rem; z-index: 999;
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  background: var(--blue); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow); transition: all var(--transition);
  opacity: 0; pointer-events: none; transform: translateY(10px);
}
.back-to-top.show { opacity: 1; pointer-events: all; transform: translateY(0); }
.back-to-top:hover { background: var(--blue-dark); transform: translateY(-2px); }

/* ─── Alert ──────────────────────────────────────────────── */
.alert { display: flex; align-items: center; gap: .75rem; padding: 1rem 1.25rem; border-radius: var(--radius); margin-bottom: 1.25rem; font-size: .95rem; position: relative; }
.alert-success { background: rgba(15,169,88,.1); color: var(--emerald-dk); border: 1px solid rgba(15,169,88,.25); }
.alert-error { background: rgba(220,38,38,.1); color: #DC2626; border: 1px solid rgba(220,38,38,.25); }
.alert-warning { background: rgba(212,175,55,.1); color: var(--gold-dark); border: 1px solid rgba(212,175,55,.25); }
.alert-info { background: rgba(11,61,145,.1); color: var(--blue); border: 1px solid rgba(11,61,145,.25); }
.alert-close { position: absolute; right: .75rem; top: 50%; transform: translateY(-50%); color: inherit; opacity: .6; font-size: .85rem; }

/* ─── Page Hero Banner ───────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  padding: 4rem 0 3rem; color: var(--white);
}
.page-hero-title { font-family: var(--font-serif); font-size: clamp(1.8rem,4vw,2.8rem); font-weight: 700; margin-bottom: .75rem; }
.page-hero-desc { color: rgba(255,255,255,.8); font-size: 1.05rem; max-width: 600px; }
.breadcrumb { display: flex; align-items: center; gap: .5rem; margin-bottom: 1rem; font-size: .85rem; }
.breadcrumb a { color: rgba(255,255,255,.7); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb-sep { color: rgba(255,255,255,.4); }
.breadcrumb-current { color: var(--gold); }

/* ─── Books Grid ─────────────────────────────────────────── */
.books-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.book-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); transition: all var(--transition); box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
.book-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.book-cover { height: 260px; overflow: hidden; position: relative; background: var(--gray-100); }
.book-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.book-card:hover .book-cover img { transform: scale(1.05); }
.book-cover-overlay { position: absolute; inset: 0; background: rgba(11,61,145,.7); display: flex; align-items: center; justify-content: center; gap: .75rem; opacity: 0; transition: opacity var(--transition); }
.book-card:hover .book-cover-overlay { opacity: 1; }
.book-cover-overlay .btn { padding: .45rem 1rem; font-size: .8rem; }
.book-wishlist { position: absolute; top: .75rem; right: .75rem; width: 32px; height: 32px; border-radius: 50%; background: var(--white); color: var(--text-muted); display: flex; align-items: center; justify-content: center; font-size: .9rem; transition: all var(--transition); cursor: pointer; z-index: 2; }
.book-wishlist:hover, .book-wishlist.active { color: #E53E3E; }
.book-badges { position: absolute; top: .75rem; left: .75rem; display: flex; flex-direction: column; gap: .3rem; z-index: 2; }
.book-body { padding: 1.25rem; flex: 1; display: flex; flex-direction: column; }
.book-category { font-size: .75rem; color: var(--blue); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; margin-bottom: .4rem; }
.book-title { font-family: var(--font-serif); font-size: .95rem; font-weight: 700; color: var(--text); margin-bottom: .4rem; line-height: 1.4; flex: 1; }
.book-meta { font-size: .78rem; color: var(--text-muted); margin-bottom: .5rem; }
.book-rating { display: flex; align-items: center; gap: .4rem; margin-bottom: .75rem; }
.book-rating .stars { display: flex; gap: .15rem; color: var(--gold); font-size: .78rem; }
.book-rating span { font-size: .8rem; color: var(--text-muted); }
.book-price-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem; }
.book-price { font-size: 1.1rem; font-weight: 800; color: var(--blue); }
.book-price .old-price { font-size: .85rem; text-decoration: line-through; color: var(--text-muted); font-weight: 400; margin-left: .3rem; }
.book-actions { display: flex; gap: .5rem; margin-top: .75rem; }
.book-actions .btn { flex: 1; padding: .5rem; font-size: .8rem; justify-content: center; }

/* ─── Filter Bar ─────────────────────────────────────────── */
.filter-bar { background: var(--white); border-radius: var(--radius-lg); padding: 1.5rem 2rem; margin-bottom: 2rem; border: 1px solid var(--border); display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }

/* Unified publications catalog */
.catalog-layout { display:grid; grid-template-columns:270px minmax(0,1fr); gap:2.5rem; align-items:start; }
.catalog-sidebar { background:var(--white); border:1px solid var(--border); border-radius:var(--radius-lg); padding:1.35rem; position:sticky; top:1.25rem; box-shadow:var(--shadow-sm); }
.catalog-filter-heading { display:flex; justify-content:space-between; gap:.75rem; align-items:center; margin-bottom:1.25rem; }.catalog-filter-heading span,.catalog-eyebrow { display:block; color:var(--blue); font-size:.68rem; font-weight:800; letter-spacing:.11em; }.catalog-filter-heading h2 { font-size:1.1rem; margin:.2rem 0 0; }.catalog-filter-heading a { font-size:.78rem; font-weight:600; }
.catalog-search { position:relative; display:block; margin-bottom:1.35rem; }.catalog-search i { position:absolute; left:.85rem; top:50%; transform:translateY(-50%); color:var(--text-muted); font-size:.8rem; }.catalog-search input { width:100%; padding:.78rem .85rem .78rem 2.25rem; border:1px solid var(--border); border-radius:var(--radius); background:var(--bg); font:inherit; }.catalog-search input:focus { border-color:var(--blue); outline:0; box-shadow:0 0 0 3px rgba(11,61,145,.08); }
.catalog-filter-group { border:0; border-top:1px solid var(--border); margin:0 0 1rem; padding:1rem 0 0; }.catalog-filter-group legend { font-size:.72rem; font-weight:800; text-transform:uppercase; letter-spacing:.08em; color:var(--text-muted); padding:0; }.catalog-filter-group label { display:block; padding:.38rem .45rem; border-radius:var(--radius-sm); font-size:.86rem; cursor:pointer; transition:background var(--transition),color var(--transition); }.catalog-filter-group label:hover { background:var(--gray-100); }.catalog-filter-group label:has(input:checked) { background:rgba(11,61,145,.09); color:var(--blue); font-weight:600; }.catalog-filter-group input { margin-right:.45rem; accent-color:var(--blue); }.catalog-filter-group i { width:1.1rem; color:var(--blue); }
.catalog-toolbar { display:flex; justify-content:space-between; align-items:end; gap:1rem; margin:0 0 1.15rem; padding-bottom:1rem; border-bottom:1px solid var(--border); color:var(--text-muted); font-size:.9rem; }.catalog-toolbar p { margin:.25rem 0 0; }.catalog-toolbar strong { color:var(--text); font-size:1.05rem; }.catalog-toolbar label { display:flex; align-items:center; gap:.5rem; font-weight:600; color:var(--text); }.catalog-toolbar select { padding:.5rem .7rem; }
.catalog-results { display:flex; flex-direction:column; gap:1.15rem; }.catalog-card { display:flex; gap:1.35rem; background:var(--white); border:1px solid var(--border); border-radius:var(--radius-lg); padding:1.35rem; box-shadow:var(--shadow-sm); transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition); }.catalog-card:hover { transform:translateY(-2px); box-shadow:var(--shadow-lg); border-color:rgba(11,61,145,.25); }.catalog-cover,.catalog-type-mark { flex:0 0 116px; align-self:stretch; }.catalog-cover img { display:block; width:116px; height:100%; min-height:165px; object-fit:cover; border-radius:var(--radius); }.catalog-type-mark { min-height:165px; border-radius:var(--radius); display:flex; flex-direction:column; justify-content:center; align-items:center; gap:.55rem; background:rgba(11,61,145,.08); color:var(--blue); }.catalog-type-mark i { font-size:2rem; }.catalog-type-mark span { font-size:.72rem; font-weight:800; letter-spacing:.06em; text-transform:uppercase; }.catalog-type-journal { background:rgba(190,146,46,.12); color:#96701c; }
.catalog-card-body { min-width:0; flex:1; }.catalog-tags { display:flex; flex-wrap:wrap; align-items:center; gap:.5rem; margin-bottom:.55rem; }.catalog-category { color:var(--text-muted); font-size:.78rem; }.catalog-card h2 { font-family:var(--font-serif); font-size:1.18rem; line-height:1.4; margin:0 0 .4rem; }.catalog-card h2 a { color:var(--text); }.catalog-card h2 a:hover { color:var(--blue); }.catalog-authors { color:var(--text-muted); font-size:.86rem; margin:.25rem 0 .85rem; }.catalog-meta { display:grid; grid-template-columns:repeat(auto-fit,minmax(145px,1fr)); gap:.45rem .8rem; margin:0 0 .85rem; padding:.7rem .85rem; border-radius:var(--radius-sm); background:var(--gray-100); }.catalog-meta div { display:flex; gap:.3rem; min-width:0; font-size:.77rem; }.catalog-meta dt { flex:none; color:var(--text-muted); }.catalog-meta dt::after { content:':'; }.catalog-meta dd { margin:0; font-weight:600; overflow-wrap:anywhere; }.catalog-summary { color:var(--text-secondary); font-size:.88rem; line-height:1.65; margin:.5rem 0; }.catalog-keywords { display:flex; flex-wrap:wrap; gap:.35rem; margin:.75rem 0; }.catalog-keywords span { background:var(--gray-100); border-radius:99px; color:var(--text-muted); font-size:.72rem; padding:.2rem .55rem; }.catalog-actions { display:flex; flex-wrap:wrap; gap:.5rem; margin-top:.95rem; }.catalog-empty { padding:5rem 1rem; text-align:center; color:var(--text-muted); }.catalog-empty i { font-size:3rem; opacity:.35; }.catalog-empty h2 { color:var(--text); margin:1rem 0 .3rem; }.catalog-empty .btn { margin-top:.75rem; }
.filter-group { display: flex; align-items: center; gap: .5rem; }
.filter-label { font-size: .88rem; font-weight: 600; color: var(--text-muted); }
.filter-select { padding: .5rem 1rem; border: 1.5px solid var(--border); border-radius: var(--radius-sm); background: var(--bg); color: var(--text); font-size: .9rem; cursor: pointer; outline: none; transition: border-color var(--transition); }
.filter-select:focus { border-color: var(--blue); }
.filter-search { flex: 1; min-width: 200px; position: relative; }
.filter-search input { width: 100%; padding: .5rem 1rem .5rem 2.5rem; border: 1.5px solid var(--border); border-radius: var(--radius-sm); background: var(--bg); color: var(--text); font-size: .9rem; outline: none; transition: border-color var(--transition); }
.filter-search input:focus { border-color: var(--blue); }
.filter-search i { position: absolute; left: .9rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: .85rem; }

/* ─── Profile Page ───────────────────────────────────────── */
.profile-hero { display: grid; grid-template-columns: 320px 1fr; gap: 4rem; align-items: start; }
.profile-photo-wrap { position: sticky; top: 100px; }
.profile-photo { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); border: 4px solid var(--white); }
.profile-card { background: var(--white); border-radius: var(--radius-lg); padding: 1.5rem; border: 1px solid var(--border); margin-top: 1.5rem; }
.profile-card .pc-item { display: flex; align-items: center; gap: .75rem; padding: .6rem 0; border-bottom: 1px solid var(--border); font-size: .9rem; }
.profile-card .pc-item:last-child { border-bottom: none; }
.profile-card .pc-item i { width: 16px; color: var(--blue); }
.profile-card .pc-item a { color: var(--text); }
.profile-card .pc-item a:hover { color: var(--blue); }
.profile-main-title { font-family: var(--font-serif); font-size: clamp(2rem,4vw,2.8rem); font-weight: 700; color: var(--text); margin-bottom: .5rem; }
.profile-role { color: var(--blue); font-size: 1.1rem; font-weight: 600; margin-bottom: .25rem; }
.profile-university { color: var(--text-muted); font-size: 1rem; margin-bottom: 1.5rem; }
.profile-section { margin-bottom: 3rem; }
.profile-section-title { font-size: 1.2rem; font-weight: 700; color: var(--text); margin-bottom: 1.25rem; display: flex; align-items: center; gap: .6rem; padding-bottom: .6rem; border-bottom: 2px solid var(--border); }
.profile-section-title i { color: var(--blue); }
.education-item { display: flex; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--border); }
.education-item:last-child { border-bottom: none; }
.edu-icon { width: 42px; height: 42px; background: rgba(11,61,145,.08); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--blue); flex-shrink: 0; }
.edu-degree { font-weight: 700; color: var(--text); margin-bottom: .2rem; }
.edu-school { color: var(--blue); font-size: .9rem; margin-bottom: .1rem; }
.edu-year { color: var(--text-muted); font-size: .82rem; }

/* ─── Contact Page ───────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 4rem; }
.contact-info-card { background: var(--white); border-radius: var(--radius-lg); padding: 2rem; border: 1px solid var(--border); margin-bottom: 1.5rem; }
.contact-info-item { display: flex; align-items: flex-start; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--border); }
.contact-info-item:last-child { border-bottom: none; }
.ci-icon { width: 44px; height: 44px; background: rgba(11,61,145,.08); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--blue); flex-shrink: 0; font-size: 1.1rem; }
.ci-title { font-weight: 600; color: var(--text); margin-bottom: .2rem; font-size: .9rem; }
.ci-value { color: var(--text-muted); font-size: .9rem; }
.ci-value a { color: var(--text-muted); }
.ci-value a:hover { color: var(--blue); }
.contact-form-card { background: var(--white); border-radius: var(--radius-lg); padding: 2.5rem; border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: .9rem; font-weight: 600; color: var(--text); margin-bottom: .5rem; }
.form-control { width: 100%; padding: .75rem 1rem; border: 2px solid var(--border); border-radius: var(--radius); background: var(--bg); color: var(--text); font-size: .95rem; outline: none; transition: border-color var(--transition), box-shadow var(--transition); }
.form-control:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(11,61,145,.1); }
.form-control.error { border-color: #DC2626; }
textarea.form-control { resize: vertical; min-height: 140px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ─── FAQ ────────────────────────────────────────────────── */
.faq-section { background: var(--bg); }
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: .75rem; }
.faq-item { background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; }
.faq-question { width: 100%; padding: 1.25rem 1.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; font-weight: 600; color: var(--text); font-size: .95rem; text-align: left; }
.faq-question:hover { color: var(--blue); }
.faq-icon { width: 28px; height: 28px; border-radius: 50%; background: rgba(11,61,145,.08); color: var(--blue); display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: transform var(--transition); font-size: .75rem; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--blue); color: var(--white); }
.faq-answer { padding: 0 1.5rem; max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s ease; color: var(--text-muted); }
.faq-item.open .faq-answer { max-height: 400px; padding-bottom: 1.25rem; }

/* ─── Admin Styles ───────────────────────────────────────── */
.admin-body { background: var(--gray-100); min-height: 100vh; font-family: var(--font-ui); }
.admin-sidebar { position: fixed; left: 0; top: 0; bottom: 0; width: 260px; background: var(--dark); overflow-y: auto; z-index: 100; transition: transform var(--transition); }
.admin-sidebar-logo { padding: 1.5rem; border-bottom: 1px solid rgba(255,255,255,.08); display: flex; align-items: center; gap: .75rem; }
.admin-sidebar-logo i { color: var(--gold); font-size: 1.5rem; }
.admin-sidebar-logo span { color: var(--white); font-weight: 700; font-size: 1rem; }
.admin-nav { padding: 1rem 0; }
.admin-nav-group { margin-bottom: 1.5rem; }
.admin-nav-group-title { padding: .5rem 1.5rem; font-size: .7rem; text-transform: uppercase; letter-spacing: .1em; color: rgba(255,255,255,.35); font-weight: 600; }
.admin-nav-link { display: flex; align-items: center; gap: .75rem; padding: .7rem 1.5rem; color: rgba(255,255,255,.65); font-size: .88rem; transition: all var(--transition); }
.admin-nav-link:hover, .admin-nav-link.active { color: var(--white); background: rgba(255,255,255,.06); }
.admin-nav-link.active { color: var(--gold); border-right: 3px solid var(--gold); }
.admin-nav-link i { width: 18px; text-align: center; }
.admin-main { margin-left: 260px; min-height: 100vh; }
.admin-topbar { background: var(--white); padding: 1rem 2rem; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; box-shadow: var(--shadow-sm); }
.admin-topbar-title { font-size: 1.1rem; font-weight: 700; color: var(--text); }
.admin-user { display: flex; align-items: center; gap: .6rem; color: var(--text-muted); font-size: .9rem; }
.admin-user-avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--blue); color: var(--white); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .85rem; }
.admin-content { padding: 2rem; }
.admin-stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1.5rem; margin-bottom: 2rem; }
.admin-stat-card { background: var(--white); border-radius: var(--radius-lg); padding: 1.5rem; border: 1px solid var(--border); display: flex; align-items: center; gap: 1.25rem; }
.asc-icon { width: 52px; height: 52px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
.asc-icon.blue { background: rgba(11,61,145,.12); color: var(--blue); }
.asc-icon.gold { background: rgba(212,175,55,.15); color: var(--gold-dark); }
.asc-icon.emerald { background: rgba(15,169,88,.12); color: var(--emerald-dk); }
.asc-icon.red { background: rgba(220,38,38,.1); color: #DC2626; }
.asc-number { font-size: 2rem; font-weight: 800; color: var(--text); display: block; line-height: 1; }
.asc-label { font-size: .82rem; color: var(--text-muted); }
.admin-card { background: var(--white); border-radius: var(--radius-lg); border: 1px solid var(--border); overflow: hidden; margin-bottom: 2rem; }
.admin-card-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.admin-card-title { font-weight: 700; color: var(--text); font-size: 1rem; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th { padding: .75rem 1.5rem; background: var(--gray-50); text-align: left; font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); font-weight: 600; white-space: nowrap; }
.admin-table td { padding: .9rem 1.5rem; border-top: 1px solid var(--border); font-size: .9rem; color: var(--text); vertical-align: middle; }
.admin-table tr:hover td { background: var(--gray-50); }
.admin-form { max-width: 900px; }
.admin-form .form-group { margin-bottom: 1.5rem; }
.action-btns { display: flex; gap: .5rem; }
.btn-icon { width: 32px; height: 32px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: .85rem; transition: all var(--transition); }
.btn-edit { background: rgba(11,61,145,.1); color: var(--blue); }
.btn-edit:hover { background: var(--blue); color: var(--white); }
.btn-delete { background: rgba(220,38,38,.1); color: #DC2626; }
.btn-delete:hover { background: #DC2626; color: var(--white); }
.status-badge { padding: .25rem .75rem; border-radius: 100px; font-size: .75rem; font-weight: 600; }
.status-published { background: rgba(15,169,88,.12); color: var(--emerald-dk); }
.status-draft { background: rgba(212,175,55,.12); color: var(--gold-dark); }
.status-archived { background: rgba(107,114,128,.12); color: var(--gray-500); }

/* Loading spinner */
.spinner { display: inline-block; width: 40px; height: 40px; border: 3px solid rgba(11,61,145,.2); border-top-color: var(--blue); border-radius: 50%; animation: spin 1s linear infinite; }
.loading-overlay { position: fixed; inset: 0; background: rgba(255,255,255,.9); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 9999; opacity: 0; pointer-events: none; transition: opacity .3s; }
.loading-overlay.show { opacity: 1; pointer-events: all; }

/* Toast */
.toast-container { position: fixed; top: 1.5rem; right: 1.5rem; z-index: 99999; display: flex; flex-direction: column; gap: .5rem; }
.toast { background: var(--white); border-radius: var(--radius); padding: 1rem 1.5rem; box-shadow: var(--shadow-xl); display: flex; align-items: center; gap: .75rem; border-left: 4px solid var(--blue); transform: translateX(120%); transition: transform .35s ease; min-width: 280px; }
.toast.show { transform: translateX(0); }
.toast-success { border-color: var(--emerald); }
.toast-error { border-color: #DC2626; }
.toast-icon { font-size: 1.1rem; }
.toast-success .toast-icon { color: var(--emerald); }
.toast-error .toast-icon { color: #DC2626; }
.toast-msg { font-size: .9rem; color: var(--text); flex: 1; }

/* Responsive */
@media (max-width: 1100px) {
  .pub-grid { grid-template-columns: repeat(2,1fr); }
  .books-grid { grid-template-columns: repeat(3,1fr); }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-image-wrap { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .about-image-wrap { display: none; }
  .footer-grid { grid-template-columns: repeat(2,1fr); }
  .newsletter-card { flex-direction: column; gap: 2rem; padding: 2.5rem 2rem; }
  .admin-main { margin-left: 0; }
  .admin-sidebar { transform: translateX(-100%); }
  .admin-sidebar.open { transform: translateX(0); }
  .contact-grid { grid-template-columns: 1fr; }
  .profile-hero { grid-template-columns: 1fr; }
  .admin-stats-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .catalog-layout { grid-template-columns:1fr; }.catalog-sidebar { position:static; }.catalog-toolbar { align-items:flex-start; flex-direction:column; }.catalog-card { gap:1rem; }.catalog-cover,.catalog-type-mark { flex-basis:86px; }.catalog-cover img,.catalog-type-mark { width:86px; min-height:120px; height:120px; }.catalog-type-mark i { font-size:1.5rem; }
  .nav-menu { position: fixed; top: 110px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 1rem; gap: .25rem; box-shadow: var(--shadow-lg); transform: translateY(-150%); opacity: 0; pointer-events: none; transition: all var(--transition); z-index: 999; border-top: 1px solid var(--border); }
  .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-toggle { display: flex; }
  .nav-link { padding: .75rem 1rem; border-radius: var(--radius-sm); }
  .hidden-mobile { display: none; }
  .toolbar-left { gap: .5rem; }
  .hero-btns { flex-direction: column; }
  .hero-stats { justify-content: center; }
  .books-grid { grid-template-columns: repeat(2,1fr); }
  .research-grid { grid-template-columns: repeat(2,1fr); }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .pub-grid { grid-template-columns: 1fr; }
  .testimonials-carousel .testimonial-card { min-width: 100%; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .books-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .research-grid { grid-template-columns: 1fr; }
  .admin-stats-grid { grid-template-columns: 1fr; }
  .container { padding: 0 1rem; }
}