/* =============================================
   TelecoUniPamplona — Design System
   Universidad de Pamplona | Ing. Telecomunicaciones
   ============================================= */

/* --- TOKENS --- */
:root {
  --primary: #003366;
  --primary-dark: #001a33;
  --primary-light: #004d99;
  --accent: #ad3333;
  --accent-dark: #8b2222;
  --accent-light: #c94444;
  --gray: #DADADA;
  --gray-light: #f4f4f6;
  --gray-mid: #9ca3af;
  --dark: #1a1a2e;
  --white: #ffffff;
  --text: #2d2d2d;
  --text-light: #6b7280;
  --success: #16a34a;
  --warning: #d97706;
  --info: #0284c7;
  --font: 'Inter', sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --navbar-h: 70px;
}

/* --- RESET --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  padding-bottom: 70px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
input, textarea, select { font-family: var(--font); }

/* --- CONTAINER --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* --- ANNOUNCEMENT BAR --- */
.announcement-bar {
  background: var(--accent);
  color: var(--white);
  text-align: center;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  position: relative;
}
.announcement-bar .container { display: flex; align-items: center; justify-content: center; gap: 12px; }
.announcement-close { color: var(--white); font-size: 1.2rem; line-height: 1; opacity: 0.8; }
.announcement-close:hover { opacity: 1; }

/* --- NAVBAR --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(0,51,102,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  height: var(--navbar-h);
  display: flex;
  align-items: center;
}
.navbar-container {
  display: flex;
  align-items: center;
  gap: 24px;
  width: 100%;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--white);
}
.navbar-logo { width: 40px; height: 40px; color: var(--white); }
.brand-name { font-size: 1rem; font-weight: 700; color: var(--white); display: block; }
.brand-sub { font-size: 0.7rem; color: rgba(255,255,255,0.6); display: block; }
.navbar-menu { flex: 1; }
.navbar-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  color: rgba(255,255,255,0.85);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link:hover, .nav-link.active {
  color: var(--white);
  background: rgba(255,255,255,0.1);
}
.nav-link.active { border-bottom: 2px solid var(--accent); border-radius: 0; }

/* Dropdown */
.nav-dropdown { position: relative; }
.dropdown-content {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  min-width: 200px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
  z-index: 100;
}
.nav-dropdown:hover .dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-content a {
  display: block;
  padding: 10px 14px;
  color: var(--text);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  transition: var(--transition);
}
.dropdown-content a:hover { background: var(--gray-light); color: var(--primary); }
.dropdown-header { padding: 10px 14px; }
.dropdown-header strong { display: block; font-size: 0.875rem; }
.dropdown-header small { color: var(--text-light); font-size: 0.75rem; }
.dropdown-divider { height: 1px; background: var(--gray-light); margin: 4px 0; }
.dropdown-danger { color: var(--accent) !important; }
.dropdown-right { left: auto; right: 0; }

/* Navbar Actions */
.navbar-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.nav-icon-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.85);
  transition: var(--transition);
  position: relative;
}
.nav-icon-btn:hover { background: rgba(255,255,255,0.1); color: var(--white); }
.notification-badge {
  position: absolute; top: 4px; right: 4px;
  background: var(--accent); color: var(--white);
  font-size: 0.65rem; font-weight: 700;
  width: 16px; height: 16px;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
}
.nav-avatar-btn { display: flex; align-items: center; }
.avatar-small {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  background: var(--accent);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.875rem;
  overflow: hidden;
  border: 2px solid rgba(255,255,255,0.3);
}
.avatar-small img { width: 100%; height: 100%; object-fit: cover; }
.dropdown-arrow { transition: var(--transition); }

/* Search Overlay */
.search-overlay {
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: rgba(0,26,51,0.98);
  backdrop-filter: blur(12px);
  padding: 16px 0;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.search-overlay.active { opacity: 1; visibility: visible; }
.search-form {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-md);
  padding: 12px 16px;
}
.search-icon { color: rgba(255,255,255,0.5); flex-shrink: 0; }
.search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--white);
  font-size: 1rem;
}
.search-input::placeholder { color: rgba(255,255,255,0.4); }
.search-close {
  color: rgba(255,255,255,0.6);
  font-size: 1.4rem;
  line-height: 1;
  transition: var(--transition);
}
.search-close:hover { color: var(--white); }
.search-results { margin-top: 8px; max-height: 300px; overflow-y: auto; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  width: 36px;
}
.hamburger span {
  width: 22px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
  display: block;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Menu */
.mobile-menu-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1100;
  opacity: 0; visibility: hidden;
  transition: var(--transition);
}
.mobile-menu-overlay.active { opacity: 1; visibility: visible; }
.mobile-menu {
  position: fixed;
  top: 0; right: 0;
  width: 280px; height: 100%;
  background: var(--primary-dark);
  z-index: 1200;
  transform: translateX(100%);
  transition: var(--transition);
  overflow-y: auto;
  padding: 20px;
}
.mobile-menu.active { transform: translateX(0); }
.mobile-menu-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
  color: var(--white);
}
.mobile-menu-close { color: var(--white); font-size: 1.5rem; }
.mobile-menu-nav a {
  display: block;
  color: rgba(255,255,255,0.85);
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-weight: 500;
  transition: var(--transition);
}
.mobile-menu-nav a:hover, .mobile-menu-nav a.active { color: var(--white); padding-left: 8px; }
.mobile-menu-actions { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }

/* Mobile Bottom Nav */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(0,26,51,0.97);
  backdrop-filter: blur(12px);
  border-top: 1px solid rgba(255,255,255,0.1);
  z-index: 900;
  padding: 8px 0 4px;
}
.mobile-nav-item {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 3px;
  color: rgba(255,255,255,0.5);
  font-size: 0.65rem;
  font-weight: 500;
  transition: var(--transition);
  flex: 1;
  padding: 4px;
}
.mobile-nav-item.active, .mobile-nav-item:hover { color: var(--white); }
.mobile-nav-item svg { transition: var(--transition); }
.mobile-nav-item.active svg { stroke: var(--accent); }

/* --- BUTTONS --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 24px; border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 600; line-height: 1;
  transition: var(--transition); cursor: pointer; border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-accent { background: var(--accent); color: var(--white); border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline { border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); }
.btn-outline-light { border-color: rgba(255,255,255,0.5); color: var(--white); }
.btn-outline-light:hover { background: rgba(255,255,255,0.1); }
.btn-ghost { color: var(--primary); }
.btn-ghost:hover { background: var(--gray-light); }
.btn-sm { padding: 7px 16px; font-size: 0.8rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* --- BADGES --- */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 10px; border-radius: var(--radius-full);
  font-size: 0.72rem; font-weight: 600; line-height: 1.4;
}
.badge-primary { background: rgba(0,51,102,0.1); color: var(--primary); }
.badge-accent { background: rgba(173,51,51,0.1); color: var(--accent); }
.badge-success { background: rgba(22,163,74,0.1); color: var(--success); }
.badge-warning { background: rgba(217,119,6,0.1); color: var(--warning); }
.badge-danger { background: rgba(173,51,51,0.1); color: var(--accent); }
.badge-info { background: rgba(2,132,199,0.1); color: var(--info); }
.badge-secondary { background: rgba(107,114,128,0.1); color: var(--text-light); }
.badge-ghost { background: rgba(0,0,0,0.05); color: var(--text-light); }
.badge-basico { background: rgba(22,163,74,0.12); color: #15803d; }
.badge-intermedio { background: rgba(217,119,6,0.12); color: #b45309; }
.badge-avanzado { background: rgba(173,51,51,0.12); color: var(--accent); }

/* --- CARDS --- */
.card {
  background: var(--white); border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm); overflow: hidden;
  transition: var(--transition); border: 1px solid rgba(0,0,0,0.06);
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.card-body { padding: 20px; }
.card-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: var(--text); line-height: 1.4; }
.card-text { font-size: 0.875rem; color: var(--text-light); line-height: 1.6; }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--gray-light); display: flex; align-items: center; gap: 10px; }

/* Course Card */
.course-card { display: flex; flex-direction: column; }
.course-card .card-body { flex: 1; }
.course-card-meta {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.78rem; color: var(--text-light); margin: 10px 0 6px;
  flex-wrap: wrap;
}
.course-card-rating { display: flex; align-items: center; gap: 4px; color: var(--warning); font-weight: 600; font-size: 0.82rem; }
.course-card-stars { color: var(--warning); }
.course-card-professor { font-size: 0.8rem; color: var(--text-light); margin-bottom: 8px; }
.course-card-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }

/* Route Card */
.route-card {
  background: var(--white); border-radius: var(--radius-md);
  border: 1px solid rgba(0,0,0,0.08); padding: 24px;
  transition: var(--transition); position: relative; overflow: hidden;
}
.route-card::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 4px; height: 100%;
}
.route-card.basico::before { background: var(--success); }
.route-card.intermedio::before { background: var(--warning); }
.route-card.avanzado::before { background: var(--accent); }
.route-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.route-card-icon { width: 48px; height: 48px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.route-card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.route-card-desc { font-size: 0.875rem; color: var(--text-light); margin-bottom: 16px; }
.route-card-stats { display: flex; gap: 16px; font-size: 0.8rem; color: var(--text-light); margin-bottom: 16px; }
.progress-bar-wrap { background: var(--gray-light); border-radius: var(--radius-full); height: 6px; overflow: hidden; margin-bottom: 16px; }
.progress-bar-fill { height: 100%; border-radius: var(--radius-full); background: var(--primary); transition: width 1.2s cubic-bezier(0.4,0,0.2,1); }

/* --- SECTION LAYOUTS --- */
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }
.section-dark { background: var(--primary-dark); color: var(--white); }
.section-gray { background: var(--gray-light); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(173,51,51,0.1); color: var(--accent);
  padding: 6px 14px; border-radius: var(--radius-full);
  font-size: 0.8rem; font-weight: 600; margin-bottom: 16px;
}
.section-title { font-size: clamp(1.6rem,3vw,2.4rem); font-weight: 800; margin-bottom: 12px; line-height: 1.2; }
.section-subtitle { color: var(--text-light); font-size: 1rem; max-width: 600px; margin: 0 auto; }
.section-dark .section-subtitle { color: rgba(255,255,255,0.7); }

/* Grid layouts */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill,minmax(280px,1fr)); gap: 24px; }

/* Horizontal scroll (course carousel) */
.scroll-container {
  display: flex; gap: 20px; overflow-x: auto;
  scroll-snap-type: x mandatory; padding-bottom: 12px;
  -webkit-overflow-scrolling: touch;
}
.scroll-container::-webkit-scrollbar { height: 4px; }
.scroll-container::-webkit-scrollbar-track { background: var(--gray-light); border-radius: 4px; }
.scroll-container::-webkit-scrollbar-thumb { background: var(--gray); border-radius: 4px; }
.scroll-item { scroll-snap-align: start; flex-shrink: 0; width: 280px; }

/* --- HERO SECTION --- */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #004080 100%);
  min-height: 92vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(173,51,51,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.04) 0%, transparent 40%);
}
/* Circuit pattern nodes */
.hero-circuit {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
}
.hero-circuit span {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,0.06);
  animation: pulse 4s ease-in-out infinite;
}
.hero-circuit span:nth-child(1) { width:300px;height:300px;top:-80px;right:-60px;animation-delay:0s; }
.hero-circuit span:nth-child(2) { width:200px;height:200px;bottom:40px;right:20%;animation-delay:1s; }
.hero-circuit span:nth-child(3) { width:150px;height:150px;top:30%;left:-40px;animation-delay:2s; }
@keyframes pulse { 0%,100%{transform:scale(1);opacity:0.5} 50%{transform:scale(1.08);opacity:0.8} }

.hero-content { position: relative; z-index: 1; padding: 80px 0; max-width: 680px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(173,51,51,0.2); border: 1px solid rgba(173,51,51,0.4);
  color: #f4a0a0; padding: 6px 16px; border-radius: var(--radius-full);
  font-size: 0.8rem; font-weight: 600; margin-bottom: 24px;
  animation: fadeInUp 0.6s ease forwards;
}
.hero-badge-dot { width:8px;height:8px;border-radius:50%;background:#f87171;animation:blink 1.4s ease infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero h1 {
  font-size: clamp(2rem,5vw,3.5rem); font-weight: 900;
  color: var(--white); line-height: 1.1; margin-bottom: 16px;
  animation: fadeInUp 0.7s 0.1s ease both;
}
.hero h1 span { color: #f87171; }
.hero-sub {
  font-size: 1.1rem; color: rgba(255,255,255,0.75);
  margin-bottom: 12px; font-weight: 500;
  animation: fadeInUp 0.7s 0.2s ease both;
}
.hero-desc {
  font-size: 0.95rem; color: rgba(255,255,255,0.6);
  margin-bottom: 36px; line-height: 1.7; max-width: 560px;
  animation: fadeInUp 0.7s 0.3s ease both;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; animation: fadeInUp 0.7s 0.4s ease both; }
.hero-stats {
  display: flex; gap: 32px; margin-top: 48px;
  animation: fadeInUp 0.7s 0.5s ease both;
}
.hero-stat-num { font-size: 1.6rem; font-weight: 800; color: var(--white); display: block; }
.hero-stat-label { font-size: 0.78rem; color: rgba(255,255,255,0.5); }
@keyframes fadeInUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }

/* --- SIMPOSIO BLOCK --- */
.simposio-block {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 0; min-height: 500px; overflow: hidden;
}
.simposio-img-wrap { position: relative; overflow: hidden; background: var(--primary-dark); }
.simposio-img-wrap img { width:100%;height:100%;object-fit:contain;padding:20px; }
.simposio-content {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white); padding: 60px 48px; display: flex;
  flex-direction: column; justify-content: center;
}
.simposio-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: var(--white);
  padding: 6px 14px; border-radius: var(--radius-full);
  font-size: 0.78rem; font-weight: 700; margin-bottom: 20px;
  animation: pulse-badge 2s ease infinite;
}
@keyframes pulse-badge { 0%,100%{box-shadow:0 0 0 0 rgba(173,51,51,0.4)} 50%{box-shadow:0 0 0 8px rgba(173,51,51,0)} }
.simposio-content h2 { font-size: clamp(1.4rem,2.5vw,2rem); font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.simposio-meta { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 24px; }
.simposio-meta-item { display: flex; align-items: center; gap: 8px; font-size: 0.875rem; color: rgba(255,255,255,0.8); }
.simposio-desc { font-size: 0.95rem; color: rgba(255,255,255,0.7); margin-bottom: 28px; line-height: 1.7; }

/* --- PROGRAM INFO CARDS --- */
.info-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.info-card {
  background: var(--white); border-radius: var(--radius-md);
  padding: 24px; border-left: 4px solid var(--accent);
  box-shadow: var(--shadow-sm); transition: var(--transition);
  display: flex; align-items: flex-start; gap: 14px;
}
.info-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.info-card-icon {
  width: 44px; height: 44px; border-radius: var(--radius-md);
  background: rgba(0,51,102,0.08); display: flex;
  align-items: center; justify-content: center; flex-shrink: 0;
}
.info-card-label { font-size: 0.75rem; color: var(--text-light); margin-bottom: 4px; }
.info-card-value { font-size: 0.95rem; font-weight: 700; color: var(--text); }

/* --- QUICK ACCESS --- */
.quick-access-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.quick-access-item {
  background: var(--white); border-radius: var(--radius-md);
  padding: 20px 16px; text-align: center; transition: var(--transition);
  border: 1px solid rgba(0,0,0,0.06); cursor: pointer;
}
.quick-access-item:hover { background: var(--primary); color: var(--white); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.quick-access-item:hover .qa-icon { background: rgba(255,255,255,0.15); color: var(--white); }
.qa-icon {
  width: 48px; height: 48px; border-radius: var(--radius-md);
  background: rgba(0,51,102,0.08); display: flex;
  align-items: center; justify-content: center; margin: 0 auto 12px; color: var(--primary);
  transition: var(--transition);
}
.qa-label { font-size: 0.8rem; font-weight: 600; }

/* --- TABS --- */
.tabs { display: flex; border-bottom: 2px solid var(--gray-light); gap: 0; }
.tab-btn {
  padding: 12px 20px; font-size: 0.875rem; font-weight: 600;
  color: var(--text-light); border-bottom: 2px solid transparent;
  margin-bottom: -2px; transition: var(--transition);
}
.tab-btn:hover { color: var(--primary); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-content { display: none; padding: 24px 0; }
.tab-content.active { display: block; }

/* --- FOOTER --- */
.footer { background: var(--primary-dark); color: rgba(255,255,255,0.8); padding: 60px 0 0; }
.footer-accent-line { height: 4px; background: var(--accent); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding: 60px 0 40px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; color: var(--white); }
.footer-logo { width: 36px; height: 36px; color: var(--white); }
.footer-brand span { font-weight: 700; font-size: 1rem; }
.footer-text { font-size: 0.875rem; line-height: 1.7; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-link {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.7);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.social-link:hover { background: var(--accent); color: var(--white); }
.footer-title { font-size: 0.875rem; font-weight: 700; color: var(--white); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.05em; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.875rem; color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-links a:hover { color: var(--white); padding-left: 4px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; font-size: 0.875rem; color: rgba(255,255,255,0.6); }
.footer-contact svg { flex-shrink: 0; margin-top: 2px; }
.footer-contact a { color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-contact a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0; display: flex;
  align-items: center; justify-content: space-between;
  font-size: 0.8rem; color: rgba(255,255,255,0.4); flex-wrap: wrap; gap: 12px;
}
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: rgba(255,255,255,0.4); transition: var(--transition); }
.footer-bottom-links a:hover { color: var(--white); }

/* --- ANIMATIONS --- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* --- FORMS --- */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-control {
  width: 100%; padding: 11px 14px;
  border: 1.5px solid var(--gray); border-radius: var(--radius-sm);
  font-size: 0.9rem; color: var(--text); background: var(--white);
  transition: var(--transition); outline: none;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,51,102,0.1); }
.form-error { font-size: 0.78rem; color: var(--accent); margin-top: 4px; }

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .simposio-block { grid-template-columns: 1fr; }
  .simposio-img-wrap { min-height: 300px; }
  .info-grid { grid-template-columns: repeat(2,1fr); }
  .quick-access-grid { grid-template-columns: repeat(4,1fr); }
}

@media (max-width: 768px) {
  body { padding-bottom: 80px; }
  .navbar-menu { display: none; }
  .hamburger { display: flex; }
  .mobile-bottom-nav { display: flex; }
  .btn-sm { padding: 6px 12px; font-size: 0.78rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .quick-access-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .section { padding: 48px 0; }
  .simposio-content { padding: 32px 24px; }
  .hero-content { padding: 48px 0; }
  .hero-stats { gap: 20px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .navbar-actions .btn { display: none; }
  .hero-actions { flex-direction: column; }
}

@media (max-width: 480px) {
  .quick-access-grid { grid-template-columns: repeat(2,1fr); }
  .hero h1 { font-size: 1.8rem; }
  .simposio-meta { flex-direction: column; gap: 10px; }
}