/* ============================================================
   style.css — ElhyAI
   Sistema de diseño premium — Azul Oscuro · Dorado · Blanco
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;1,300&display=swap');

/* ─── Variables de diseño ─────────────────────────────────── */
:root {
  --navy:        #050d1a;
  --navy-mid:    #0a1628;
  --navy-light:  #0e2040;
  --blue:        #1a4080;
  --blue-glow:   #2060c0;
  --gold:        #c9a84c;
  --gold-light:  #e6c97a;
  --gold-dim:    #8a6f30;
  --white:       #f0f4ff;
  --grey:        #8898b0;
  --grey-light:  #c5d0e0;
  --glass:       rgba(14, 32, 64, 0.55);
  --glass-border:rgba(201, 168, 76, 0.18);
  --glow-blue:   0 0 40px rgba(32, 96, 192, 0.35);
  --glow-gold:   0 0 30px rgba(201, 168, 76, 0.3);
  --radius:      16px;
  --radius-sm:   10px;
  --transition:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--navy);
  color: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-family: 'Syne', sans-serif;
  line-height: 1.15;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; }

/* ─── Loading Screen ──────────────────────────────────────── */
#loading-screen {
  position: fixed;
  inset: 0;
  background: var(--navy);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#loading-screen.hidden { opacity: 0; visibility: hidden; }

.loader-logo {
  font-family: 'Syne', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 3px;
  margin-bottom: 2rem;
}
.loader-logo span { color: var(--white); }

.loader-bar {
  width: 200px;
  height: 3px;
  background: var(--navy-light);
  border-radius: 99px;
  overflow: hidden;
}
.loader-bar::after {
  content: '';
  display: block;
  height: 100%;
  width: 40%;
  background: linear-gradient(90deg, var(--blue-glow), var(--gold));
  border-radius: 99px;
  animation: loaderSlide 1.2s ease-in-out infinite;
}
@keyframes loaderSlide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ─── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--navy-mid); }
::-webkit-scrollbar-thumb { background: var(--blue); border-radius: 99px; }

/* ─── Selection ───────────────────────────────────────────── */
::selection { background: var(--gold-dim); color: var(--white); }

/* ─── Utility Classes ─────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 6rem 0; }
.section-sm { padding: 3.5rem 0; }

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid var(--glass-border);
  color: var(--gold-light);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 99px;
  margin-bottom: 1.25rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.section-title .accent { color: var(--gold); }

.section-desc {
  color: var(--grey-light);
  font-size: 1.05rem;
  max-width: 540px;
  margin-bottom: 3rem;
}

.text-center { text-align: center; }
.text-center .section-desc { margin-left: auto; margin-right: auto; }

/* ─── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  border-radius: 99px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-glow), #0a3070);
  color: var(--white);
  box-shadow: var(--glow-blue);
  border: 1px solid rgba(32,96,192,0.4);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #2575d8, var(--blue-glow));
  box-shadow: 0 0 55px rgba(32,96,192,0.5);
  transform: translateY(-2px);
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  color: var(--navy);
  box-shadow: var(--glow-gold);
}
.btn-gold:hover {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  transform: translateY(-2px);
  box-shadow: 0 0 45px rgba(201,168,76,0.45);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(240,244,255,0.25);
}
.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold-light);
  background: rgba(201,168,76,0.07);
}

.btn-sm { padding: 0.55rem 1.2rem; font-size: 0.85rem; }
.btn-full { width: 100%; justify-content: center; }

/* ─── Glass Card ──────────────────────────────────────────── */
.glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius);
}

/* ─── NAVBAR ──────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(5, 13, 26, 0.92);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.65rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--white);
}
.nav-logo span { color: var(--gold); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--grey-light);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: var(--gold);
  border-radius: 99px;
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--gold-light); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--gold-light); }

.nav-actions { display: flex; align-items: center; gap: 0.75rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 99px;
  transition: var(--transition);
}

/* ─── HERO ────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 5rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 50%, rgba(26, 64, 128, 0.25) 0%, transparent 65%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(201,168,76,0.08) 0%, transparent 55%),
    var(--navy);
}

/* Grid dot pattern */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(201,168,76,0.12) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 50%, black 20%, transparent 80%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
}
.hero-eyebrow i { font-size: 0.9rem; }

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}
.hero h1 .gold { color: var(--gold); }
.hero h1 .glow {
  text-shadow: 0 0 40px rgba(32, 96, 192, 0.6);
  color: #7bb8f8;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--grey-light);
  margin-bottom: 2.5rem;
  max-width: 520px;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
}
.stat-item { }
.stat-number {
  font-family: 'Syne', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--gold);
  display: block;
}
.stat-label { font-size: 0.82rem; color: var(--grey); }

/* Hero visual / floating cards */
.hero-visual {
  position: absolute;
  right: -2%;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 500px;
}

.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  animation: spin linear infinite;
}
.orbit-ring:nth-child(1) {
  width: 100%; height: 100%;
  top: 0; left: 0;
  animation-duration: 30s;
}
.orbit-ring:nth-child(2) {
  width: 70%; height: 70%;
  top: 15%; left: 15%;
  animation-duration: 20s;
  animation-direction: reverse;
}
.orbit-ring:nth-child(3) {
  width: 42%; height: 42%;
  top: 29%; left: 29%;
  animation-duration: 12s;
}

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.orbit-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 110px; height: 110px;
  background: linear-gradient(135deg, var(--blue-glow), #0a2550);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glow-blue), 0 0 80px rgba(32,96,192,0.25);
  font-size: 3rem;
}

.orbit-dot {
  position: absolute;
  width: 36px; height: 36px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  backdrop-filter: blur(10px);
  color: var(--gold-light);
  top: -18px; left: calc(50% - 18px);
}

/* ─── FEATURES ────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  padding: 2rem;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(32,96,192,0.05), transparent);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); border-color: rgba(201,168,76,0.35); }
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, rgba(32,96,192,0.2), rgba(10,48,112,0.3));
  border: 1px solid rgba(32,96,192,0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--gold-light);
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--white);
}
.feature-card p { font-size: 0.9rem; color: var(--grey); line-height: 1.6; }

/* ─── ABOUT ───────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-visual {
  position: relative;
  height: 450px;
}

.about-card-main {
  position: absolute;
  top: 0; left: 0;
  width: 78%;
  padding: 2rem;
  border-radius: var(--radius);
}

.about-card-float {
  position: absolute;
  bottom: 0; right: 0;
  width: 60%;
  padding: 1.5rem;
  border-radius: var(--radius);
}

.about-card-float .metric {
  font-family: 'Syne', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gold);
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.value-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.value-icon {
  width: 40px; height: 40px;
  min-width: 40px;
  background: rgba(201,168,76,0.1);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-size: 1rem;
}
.value-text h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.2rem; }
.value-text p { font-size: 0.85rem; color: var(--grey); }

/* ─── COURSES ─────────────────────────────────────────────── */
.courses-filters {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.filter-btn {
  padding: 0.45rem 1.1rem;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 600;
  background: transparent;
  color: var(--grey);
  border: 1px solid rgba(136,152,176,0.2);
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: rgba(201,168,76,0.1);
  border-color: var(--gold-dim);
  color: var(--gold-light);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.course-card {
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
  cursor: pointer;
}
.course-card:hover { transform: translateY(-8px); box-shadow: 0 20px 50px rgba(0,0,0,0.4), var(--glow-blue); }

.course-thumb {
  height: 200px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy-light), var(--blue));
}
.course-thumb-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  opacity: 0.15;
}
.course-thumb-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  padding: 1.25rem;
}

.course-level-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(5,13,26,0.65);
  color: var(--gold-light);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: 99px;
  align-self: flex-start;
  backdrop-filter: blur(8px);
}

.course-thumb-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
}

.course-body { padding: 1.5rem; }

.course-meta {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 1rem;
  font-size: 0.8rem;
  color: var(--grey);
}
.course-meta span { display: flex; align-items: center; gap: 0.35rem; }
.course-meta i { color: var(--gold-dim); }

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--glass-border);
}
.course-price {
  font-family: 'Syne', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gold);
}
.course-price small {
  display: block;
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--grey);
  font-family: 'DM Sans', sans-serif;
  text-decoration: line-through;
}

.course-actions { display: flex; gap: 0.5rem; }

/* ─── VIDEO PLAYER ────────────────────────────────────────── */
.player-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  aspect-ratio: 16/9;
}
.player-wrap iframe, .player-wrap video {
  width: 100%; height: 100%;
  border: none;
  pointer-events: all;
}
/* Bloquear descarga con overlay transparente en área inferior */
.player-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 50px;
  background: transparent;
  z-index: 10;
  pointer-events: none;
}

/* ─── DASHBOARD ───────────────────────────────────────────── */
.dash-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  padding-top: 70px;
}

.dash-sidebar {
  background: var(--navy-mid);
  border-right: 1px solid var(--glass-border);
  padding: 2rem 0;
  position: sticky;
  top: 70px;
  height: calc(100vh - 70px);
  overflow-y: auto;
}

.sidebar-user {
  padding: 1.5rem 1.5rem 2rem;
  border-bottom: 1px solid var(--glass-border);
  text-align: center;
}
.avatar-wrap {
  width: 72px; height: 72px;
  border-radius: 50%;
  border: 2px solid var(--gold-dim);
  overflow: hidden;
  margin: 0 auto 0.75rem;
  background: var(--navy-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--gold);
}
.avatar-wrap img { width: 100%; height: 100%; object-fit: cover; }
.user-name { font-weight: 700; font-size: 0.95rem; margin-bottom: 0.15rem; }
.user-role {
  font-size: 0.75rem;
  color: var(--gold);
  background: rgba(201,168,76,0.1);
  padding: 0.2rem 0.65rem;
  border-radius: 99px;
  display: inline-block;
}

.sidebar-nav { padding: 1rem 0; }
.sidebar-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--grey);
  padding: 0.5rem 1.5rem;
  margin-top: 0.75rem;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.8rem 1.5rem;
  color: var(--grey-light);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.sidebar-link i { width: 18px; text-align: center; font-size: 0.95rem; color: var(--grey); }
.sidebar-link:hover { color: var(--white); background: rgba(32,96,192,0.08); }
.sidebar-link:hover i { color: var(--gold-light); }
.sidebar-link.active {
  color: var(--gold-light);
  background: rgba(201,168,76,0.07);
}
.sidebar-link.active i { color: var(--gold); }
.sidebar-link.active::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--gold);
  border-radius: 0 2px 2px 0;
}

.dash-main { padding: 2rem; overflow-y: auto; }

/* Stats row */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.stat-card {
  padding: 1.5rem;
  border-radius: var(--radius);
}
.stat-card-label { font-size: 0.8rem; color: var(--grey); margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.5rem; }
.stat-card-value { font-family: 'Syne', sans-serif; font-size: 2rem; font-weight: 800; color: var(--white); }
.stat-card-sub { font-size: 0.78rem; color: var(--gold); margin-top: 0.25rem; }

/* Progress bar */
.progress-bar {
  height: 6px;
  background: var(--navy-light);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 0.6rem;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--blue-glow), var(--gold));
  border-radius: 99px;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* My courses list */
.my-course-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  transition: var(--transition);
}
.my-course-item:hover { border-color: rgba(201,168,76,0.3); }
.my-course-thumb {
  width: 60px; height: 60px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--blue), var(--navy-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.my-course-info { flex: 1; min-width: 0; }
.my-course-info h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.35rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.my-course-info .meta { font-size: 0.78rem; color: var(--grey); margin-bottom: 0.5rem; }

/* ─── CERTIFICATES ────────────────────────────────────────── */
.cert-card {
  padding: 2rem;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
  transition: var(--transition);
}
.cert-icon {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, var(--gold-dim), #5a420a);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--gold-light);
  flex-shrink: 0;
}
.cert-info { flex: 1; }
.cert-info h4 { font-size: 1rem; font-weight: 700; margin-bottom: 0.25rem; }
.cert-info p { font-size: 0.82rem; color: var(--grey); }
.cert-date { font-size: 0.78rem; color: var(--gold); margin-top: 0.3rem; }

/* ─── CERTIFICATE PDF TEMPLATE ────────────────────────────── */
#cert-template {
  width: 900px;
  height: 630px;
  background: linear-gradient(135deg, #050d1a 0%, #0a1628 50%, #050d1a 100%);
  position: relative;
  overflow: hidden;
  font-family: 'Syne', sans-serif;
  color: #f0f4ff;
  display: none; /* shown only during PDF generation */
}
#cert-template.visible { display: block; }

.cert-border-outer {
  position: absolute;
  inset: 12px;
  border: 2px solid var(--gold-dim);
  border-radius: 8px;
}
.cert-border-inner {
  position: absolute;
  inset: 20px;
  border: 1px solid rgba(201,168,76,0.25);
  border-radius: 4px;
}

.cert-corner {
  position: absolute;
  width: 40px; height: 40px;
  border-color: var(--gold);
  border-style: solid;
}
.cert-corner.tl { top: 24px; left: 24px; border-width: 2px 0 0 2px; }
.cert-corner.tr { top: 24px; right: 24px; border-width: 2px 2px 0 0; }
.cert-corner.bl { bottom: 24px; left: 24px; border-width: 0 0 2px 2px; }
.cert-corner.br { bottom: 24px; right: 24px; border-width: 0 2px 2px 0; }

.cert-logo-line {
  position: absolute;
  top: 55px; left: 50%;
  transform: translateX(-50%);
  text-align: center;
  width: 100%;
}
.cert-logo-name {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--gold);
}
.cert-divider {
  width: 160px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
  margin: 8px auto;
}

.cert-title-main {
  position: absolute;
  top: 120px; left: 50%;
  transform: translateX(-50%);
  text-align: center;
  width: 100%;
  font-size: 3rem;
  font-weight: 800;
  color: var(--gold-light);
  letter-spacing: 6px;
  text-transform: uppercase;
  text-shadow: 0 0 40px rgba(201,168,76,0.3);
}

.cert-sub-title {
  position: absolute;
  top: 195px; left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  letter-spacing: 3px;
  color: var(--grey-light);
  text-transform: uppercase;
  text-align: center;
  width: 100%;
}

.cert-certifies {
  position: absolute;
  top: 235px; left: 50%;
  transform: translateX(-50%);
  text-align: center;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--grey-light);
  white-space: nowrap;
}

.cert-student-name {
  position: absolute;
  top: 270px; left: 50%;
  transform: translateX(-50%);
  text-align: center;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  text-shadow: 0 0 30px rgba(32,96,192,0.4);
  white-space: nowrap;
}

.cert-course-label {
  position: absolute;
  top: 340px; left: 50%;
  transform: translateX(-50%);
  text-align: center;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  color: var(--grey-light);
  white-space: nowrap;
}

.cert-course-name {
  position: absolute;
  top: 368px; left: 50%;
  transform: translateX(-50%);
  text-align: center;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gold-light);
  white-space: nowrap;
}

.cert-footer {
  position: absolute;
  bottom: 60px;
  left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 0 80px;
}

.cert-sign { text-align: center; }
.cert-sign-line {
  width: 160px; height: 1px;
  background: var(--grey);
  margin: 0 auto 6px;
}
.cert-sign p { font-size: 0.72rem; color: var(--grey-light); font-family: 'DM Sans', sans-serif; }
.cert-sign strong { display: block; font-size: 0.8rem; font-weight: 600; color: var(--white); }

#cert-qr {
  width: 70px; height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-date-badge {
  text-align: center;
}
.cert-date-badge p { font-size: 0.72rem; color: var(--grey); font-family: 'DM Sans', sans-serif; }
.cert-date-badge strong { font-size: 0.9rem; color: var(--white); }

/* ─── AUTH FORMS ──────────────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background:
    radial-gradient(ellipse 60% 80% at 30% 50%, rgba(26,64,128,0.2) 0%, transparent 60%),
    var(--navy);
}

.auth-card {
  width: 100%;
  max-width: 460px;
  padding: 2.5rem;
  border-radius: var(--radius);
}

.auth-header { text-align: center; margin-bottom: 2rem; }
.auth-header .logo { font-family: 'Syne', sans-serif; font-size: 1.5rem; font-weight: 800; color: var(--gold); margin-bottom: 1rem; }
.auth-header h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.35rem; }
.auth-header p { font-size: 0.88rem; color: var(--grey); }

.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--grey-light); }
.form-input {
  width: 100%;
  background: rgba(14,32,64,0.5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.8rem 1rem;
  transition: var(--transition);
  outline: none;
}
.form-input::placeholder { color: var(--grey); }
.form-input:focus { border-color: var(--blue-glow); box-shadow: 0 0 0 3px rgba(32,96,192,0.15); }

.form-input-wrap { position: relative; }
.form-input-wrap .form-input { padding-right: 3rem; }
.input-toggle {
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--grey);
  cursor: pointer;
  font-size: 0.9rem;
  transition: color var(--transition);
}
.input-toggle:hover { color: var(--gold-light); }

.form-footer { text-align: center; margin-top: 1.5rem; font-size: 0.88rem; color: var(--grey); }
.form-footer a { color: var(--gold-light); font-weight: 600; }
.form-footer a:hover { text-decoration: underline; }

.divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--grey);
  font-size: 0.82rem;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--glass-border);
}

/* ─── ADMIN PANEL ─────────────────────────────────────────── */
.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.admin-header h2 { font-size: 1.5rem; font-weight: 800; }

.admin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.admin-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--grey);
  border-bottom: 1px solid var(--glass-border);
}
.admin-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid rgba(14,32,64,0.8);
  color: var(--grey-light);
}
.admin-table tr:hover td { background: rgba(14,32,64,0.4); }
.admin-table .badge {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
}
.badge-green { background: rgba(16,185,129,0.12); color: #34d399; }
.badge-yellow { background: rgba(201,168,76,0.12); color: var(--gold-light); }
.badge-red { background: rgba(239,68,68,0.12); color: #f87171; }

/* ─── TESTIMONIALS ────────────────────────────────────────── */
.testimonials-track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scrollbar-width: none;
  scroll-snap-type: x mandatory;
  padding-bottom: 1rem;
}
.testimonials-track::-webkit-scrollbar { display: none; }

.testimonial-card {
  min-width: 320px;
  scroll-snap-align: start;
  padding: 2rem;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.stars { color: var(--gold); font-size: 0.9rem; margin-bottom: 1rem; letter-spacing: 2px; }
.testimonial-text { font-size: 0.92rem; color: var(--grey-light); line-height: 1.7; margin-bottom: 1.25rem; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
.author-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--navy-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--gold-light);
  flex-shrink: 0;
}
.author-info h5 { font-size: 0.9rem; font-weight: 700; }
.author-info span { font-size: 0.78rem; color: var(--grey); }

/* ─── FAQ ─────────────────────────────────────────────────── */
.faq-item {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: rgba(201,168,76,0.3); }

.faq-trigger {
  width: 100%;
  background: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  transition: color var(--transition);
}
.faq-trigger:hover { color: var(--gold-light); }
.faq-item.open .faq-trigger { color: var(--gold-light); }

.faq-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  color: var(--grey);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-icon { background: rgba(201,168,76,0.1); border-color: var(--gold-dim); color: var(--gold); transform: rotate(45deg); }

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-body.open { max-height: 300px; }
.faq-body p { padding: 0 1.5rem 1.25rem; font-size: 0.88rem; color: var(--grey-light); line-height: 1.75; }

/* ─── FOOTER ──────────────────────────────────────────────── */
.footer {
  background: var(--navy-mid);
  border-top: 1px solid var(--glass-border);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand .logo { font-family: 'Syne', sans-serif; font-size: 1.3rem; font-weight: 800; color: var(--white); margin-bottom: 1rem; }
.footer-brand .logo span { color: var(--gold); }
.footer-brand p { font-size: 0.88rem; color: var(--grey); line-height: 1.7; max-width: 280px; }
.footer-socials { display: flex; gap: 0.75rem; margin-top: 1.25rem; }
.social-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--navy-light);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--grey);
  font-size: 0.9rem;
  transition: var(--transition);
}
.social-btn:hover { background: rgba(201,168,76,0.1); border-color: var(--gold-dim); color: var(--gold); }
.footer-col h4 { font-size: 0.85rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--white); margin-bottom: 1.25rem; }
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col ul li a { font-size: 0.87rem; color: var(--grey); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--gold-light); }
.footer-newsletter .form-input { border-radius: var(--radius-sm) var(--radius-sm) 0 0; }
.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--grey);
}
.footer-bottom a { color: var(--gold-dim); }

/* ─── WHATSAPP FLOAT ──────────────────────────────────────── */
.wa-float {
  position: fixed;
  bottom: 2rem; right: 2rem;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
}
.wa-btn {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  animation: pulse 2.5s ease-in-out infinite;
}
.wa-btn:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(37,211,102,0.55); }
@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,0.4); }
  50%       { box-shadow: 0 4px 30px rgba(37,211,102,0.7), 0 0 0 10px rgba(37,211,102,0.08); }
}
.wa-tooltip {
  background: var(--navy-mid);
  border: 1px solid var(--glass-border);
  padding: 0.5rem 1rem;
  border-radius: 99px;
  font-size: 0.82rem;
  color: var(--grey-light);
  white-space: nowrap;
}

/* ─── BACK TO TOP ─────────────────────────────────────────── */
.back-top {
  position: fixed;
  bottom: 6rem; right: 2rem;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--navy-light);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--grey);
  font-size: 0.9rem;
  z-index: 900;
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
  pointer-events: none;
}
.back-top.visible { opacity: 1; transform: translateY(0); pointer-events: all; }
.back-top:hover { border-color: var(--gold-dim); color: var(--gold); }

/* ─── MODALS ──────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5,13,26,0.85);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-box {
  width: 100%;
  max-width: 540px;
  border-radius: var(--radius);
  padding: 2.5rem;
  transform: scale(0.95) translateY(20px);
  transition: var(--transition);
}
.modal-overlay.open .modal-box { transform: scale(1) translateY(0); }
.modal-close {
  position: absolute;
  top: 1rem; right: 1rem;
  background: none;
  font-size: 1.2rem;
  color: var(--grey);
  transition: color var(--transition);
}
.modal-close:hover { color: var(--white); }
.modal-relative { position: relative; }

/* ─── DARK MODE ───────────────────────────────────────────── */
body.light-mode {
  --navy:       #f0f4ff;
  --navy-mid:   #e4ebf8;
  --navy-light: #d6e0f0;
  --white:      #050d1a;
  --grey:       #4a5b72;
  --grey-light: #1a2a40;
  --glass:      rgba(240,244,255,0.7);
  --glass-border: rgba(26,64,128,0.15);
}

/* ─── NOTIFICATIONS ───────────────────────────────────────── */
.notif-toast {
  position: fixed;
  top: 1.5rem; right: 1.5rem;
  z-index: 5000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 360px;
  width: 100%;
}
.toast {
  background: var(--navy-mid);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: toastIn 0.35s ease forwards;
  position: relative;
  overflow: hidden;
}
.toast::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
}
.toast.success::before { background: #34d399; }
.toast.error::before   { background: #f87171; }
.toast.info::before    { background: var(--blue-glow); }
.toast-icon { font-size: 1.1rem; }
.toast.success .toast-icon { color: #34d399; }
.toast.error   .toast-icon { color: #f87171; }
.toast.info    .toast-icon { color: var(--gold-light); }
.toast-msg { font-size: 0.88rem; color: var(--grey-light); flex: 1; }
.toast-close { background: none; font-size: 0.9rem; color: var(--grey); transition: color var(--transition); }
.toast-close:hover { color: var(--white); }
@keyframes toastIn { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }

/* ─── SEARCH BAR ──────────────────────────────────────────── */
.search-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(14,32,64,0.5);
  border: 1px solid var(--glass-border);
  border-radius: 99px;
  padding: 0.6rem 1.25rem;
  max-width: 380px;
  width: 100%;
  transition: border-color var(--transition);
}
.search-bar:focus-within { border-color: var(--blue-glow); }
.search-bar i { color: var(--grey); font-size: 0.9rem; }
.search-bar input { background: none; border: none; outline: none; color: var(--white); font-size: 0.9rem; width: 100%; font-family: inherit; }
.search-bar input::placeholder { color: var(--grey); }

/* ─── AOS Utility ─────────────────────────────────────────── */
[data-aos] { transition: opacity 0.6s ease, transform 0.6s ease; }
[data-aos="fade-up"] { opacity: 0; transform: translateY(30px); }
[data-aos="fade-up"].aos-animate { opacity: 1; transform: translateY(0); }
[data-aos="fade-right"] { opacity: 0; transform: translateX(-30px); }
[data-aos="fade-right"].aos-animate { opacity: 1; transform: translateX(0); }
[data-aos="fade-left"] { opacity: 0; transform: translateX(30px); }
[data-aos="fade-left"].aos-animate { opacity: 1; transform: translateX(0); }
[data-aos="zoom-in"] { opacity: 0; transform: scale(0.9); }
[data-aos="zoom-in"].aos-animate { opacity: 1; transform: scale(1); }

/* ─── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { height: 300px; margin-bottom: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-visual { display: none; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: rgba(5,13,26,0.98);
    backdrop-filter: blur(20px);
    align-items: center;
    justify-content: center;
    gap: 2rem;
    font-size: 1.2rem;
    z-index: 999;
  }

  .hero-stats { gap: 1.5rem; }
  .features-grid { grid-template-columns: 1fr; }
  .courses-grid { grid-template-columns: 1fr; }

  .dash-layout { grid-template-columns: 1fr; }
  .dash-sidebar { display: none; }
  .dash-sidebar.open { display: block; position: fixed; inset: 70px 0 0 0; z-index: 100; height: auto; }

  .admin-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }

  .about-card-main, .about-card-float { position: static; width: 100%; margin-bottom: 1rem; }
  .about-visual { height: auto; display: flex; flex-direction: column; }

  .cert-footer { padding: 0 30px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .hero-stats { flex-wrap: wrap; }
  .btn { padding: 0.7rem 1.3rem; font-size: 0.88rem; }
}