/* ============================================================
   LANDING.CSS – Landing Page Styles
   ============================================================ */

/* ── Hero Section ──────────────────────────────────────────── */
.landing-body {
  margin: 0;
  background: #fff;
  overflow-x: hidden;
}

/* Navigation */
.landing-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(36,81,209,.1);
  height: 68px;
  display: flex;
  align-items: center;
  padding: 0 var(--space-8);
  transition: all var(--transition-base);
}

.landing-nav.scrolled {
  box-shadow: 0 4px 20px rgba(36,81,209,.1);
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-logo-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; font-weight: 800; color: #fff;
  box-shadow: 0 4px 12px rgba(36,81,209,.3);
}

.nav-logo-text {
  font-size: var(--font-size-lg);
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-700), var(--primary-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links { display: flex; align-items: center; gap: var(--space-6); }

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition-fast);
}

.nav-link:hover { color: var(--primary-500); }

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-700) 50%, #1a4b8a 100%);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 68px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(59,109,232,.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(6,182,212,.2) 0%, transparent 40%);
}

.hero-bg-circles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
  animation: floatCircle 8s ease-in-out infinite;
}

.hero-circle:nth-child(1) { width: 400px; height: 400px; top: -100px; right: -100px; animation-delay: 0s; }
.hero-circle:nth-child(2) { width: 250px; height: 250px; bottom: 50px; left: -80px; animation-delay: 3s; }
.hero-circle:nth-child(3) { width: 150px; height: 150px; top: 30%; right: 20%; animation-delay: 5s; }

@keyframes floatCircle {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-12) var(--space-8);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: rgba(255,255,255,.9);
  backdrop-filter: blur(8px);
  margin-bottom: var(--space-5);
}

.hero-badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-400);
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin-bottom: var(--space-5);
}

.hero-title span {
  background: linear-gradient(135deg, var(--accent-300), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: var(--font-size-base);
  color: rgba(255,255,255,.75);
  line-height: 1.8;
  margin-bottom: var(--space-8);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn-glass:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.hero-stats {
  display: flex;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.hero-stat { text-align: left; }
.hero-stat-num {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: #fff;
  line-height: 1;
}
.hero-stat-label {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,.6);
  margin-top: 2px;
}

.hero-actions { display: flex; gap: var(--space-4); flex-wrap: wrap; }

/* Hero Card (right side) */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.teacher-card {
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  text-align: center;
  max-width: 340px;
  width: 100%;
}

.teacher-avatar-wrap {
  width: 120px; height: 120px;
  margin: 0 auto var(--space-5);
  position: relative;
}

.teacher-avatar-circle {
  width: 120px; height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-400), var(--accent-500));
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem; font-weight: 800; color: #fff;
  border: 4px solid rgba(255,255,255,.3);
  box-shadow: 0 8px 32px rgba(0,0,0,.2);
}

.teacher-badge-ielts {
  position: absolute;
  bottom: 0; right: -8px;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: #fff;
  font-size: 0.6rem; font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(245,158,11,.4);
}

.teacher-name {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-1);
}

.teacher-title-card {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.7);
  margin-bottom: var(--space-5);
}

.teacher-achievements {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.achievement-item {
  background: rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  border: 1px solid rgba(255,255,255,.12);
}

.achievement-icon { font-size: 1.3rem; margin-bottom: 4px; }
.achievement-val {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.achievement-label {
  font-size: 0.65rem;
  color: rgba(255,255,255,.55);
}

/* Floating badges */
.float-badge {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-xl);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-xl);
  display: flex; align-items: center; gap: var(--space-2);
  animation: floatBadge 4s ease-in-out infinite;
}

.float-badge-1 {
  top: -20px; left: -30px;
  animation-delay: 1s;
}

.float-badge-2 {
  bottom: 30px; right: -30px;
  animation-delay: 2.5s;
}

@keyframes floatBadge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.float-badge-icon { font-size: 1.2rem; }
.float-badge-text { font-size: var(--font-size-xs); font-weight: 600; color: var(--gray-800); }
.float-badge-text small { display: block; color: var(--gray-500); font-weight: 400; }

/* ── Section styles ─────────────────────────────────────────── */
.section { padding: 80px var(--space-8); }
.section-alt { background: var(--gray-50); }

.section-container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-header { text-align: center; margin-bottom: var(--space-12); }

.section-tag {
  display: inline-block;
  background: var(--primary-100);
  color: var(--primary-600);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  letter-spacing: .05em;
  text-transform: uppercase;
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.25;
  margin-bottom: var(--space-4);
}

.section-title span {
  background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc { font-size: var(--font-size-base); color: var(--gray-500); max-width: 560px; margin: 0 auto; }

/* ── Stats Bar ─────────────────────────────────────────────── */
.stats-bar {
  background: linear-gradient(135deg, var(--primary-800), var(--primary-600));
  padding: var(--space-10) var(--space-8);
}

.stats-bar-container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  text-align: center;
}

.stat-item-val {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.stat-item-label {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.65);
  margin-top: var(--space-2);
}

/* ── Features ──────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.feature-card {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  text-align: left;
}

.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: var(--primary-200);
}

.feature-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-xl);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-5);
}

.feature-icon-blue { background: var(--primary-100); }
.feature-icon-cyan { background: #e0f7fa; }
.feature-icon-purple { background: #ede9fe; }
.feature-icon-green { background: var(--success-100); }
.feature-icon-orange { background: var(--warning-100); }
.feature-icon-pink { background: #fce7f3; }

.feature-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
}

.feature-desc { font-size: var(--font-size-sm); color: var(--gray-500); line-height: 1.7; }

/* ── Achievement Section ───────────────────────────────────── */
.achievements-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.achievements-text { }

.achievements-list { margin-top: var(--space-6); }

.achievement-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--gray-100);
}

.achievement-row:last-child { border-bottom: none; }

.achievement-row-icon {
  width: 42px; height: 42px;
  border-radius: var(--radius-lg);
  background: var(--primary-100);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.achievement-row-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 2px;
}

.achievement-row-desc {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  line-height: 1.5;
}

.scores-card {
  background: linear-gradient(135deg, var(--primary-900), var(--primary-700));
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  color: #fff;
}

.scores-card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: rgba(255,255,255,.9);
}

.score-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.score-row:last-child { border-bottom: none; }

.score-label { font-size: var(--font-size-sm); color: rgba(255,255,255,.7); }

.score-val {
  font-weight: 700;
  font-size: var(--font-size-base);
  background: linear-gradient(90deg, var(--accent-300), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Register Form ─────────────────────────────────────────── */
.register-section {
  background: linear-gradient(135deg, var(--primary-900), var(--primary-700));
  padding: 80px var(--space-8);
  position: relative;
  overflow: hidden;
}

.register-section::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: rgba(255,255,255,.03);
}

.register-container {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.register-card {
  background: rgba(255,255,255,.06);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
}

.register-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: #fff;
  text-align: center;
  margin-bottom: var(--space-2);
}

.register-subtitle {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.6);
  text-align: center;
  margin-bottom: var(--space-8);
}

.register-form .form-label { color: rgba(255,255,255,.8); }

.register-form .form-input {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.15);
  color: #fff;
}

.register-form .form-input::placeholder { color: rgba(255,255,255,.35); }

.register-form .form-input:focus {
  border-color: var(--accent-400);
  box-shadow: 0 0 0 3px rgba(34,211,238,.2);
  background: rgba(255,255,255,.12);
}

.register-form select.form-input option { background: var(--primary-800); color: #fff; }

.btn-register {
  width: 100%;
  padding: var(--space-4);
  background: linear-gradient(135deg, var(--accent-500), var(--primary-400));
  color: #fff;
  font-size: var(--font-size-base);
  font-weight: 700;
  border-radius: var(--radius-xl);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 6px 20px rgba(6,182,212,.3);
}

.btn-register:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(6,182,212,.4);
}

/* ── Footer ────────────────────────────────────────────────── */
.landing-footer {
  background: var(--gray-900);
  color: rgba(255,255,255,.6);
  padding: var(--space-10) var(--space-8);
  text-align: center;
}

.footer-brand {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-3);
}

.footer-contact {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.footer-contact-item {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.footer-bottom {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,.3);
  margin-top: var(--space-4);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-container { grid-template-columns: 1fr; text-align: center; }
  .hero-title { font-size: 2.2rem; }
  .hero-stats { justify-content: center; flex-wrap: wrap; gap: var(--space-6); }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .stats-bar-container { grid-template-columns: repeat(2, 1fr); }
  .achievements-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links > a:not(.btn) {
    display: none; /* Hide text links on mobile to save space */
  }
  .nav-logo-text {
    font-size: var(--font-size-base);
  }
  .hero-title {
    font-size: 1.8rem;
    margin-bottom: var(--space-4);
  }
  .hero-description {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-6);
  }
}

@media (max-width: 600px) {
  .features-grid { grid-template-columns: 1fr; }
  .register-card { padding: var(--space-6); }
  .hero-stats { 
    flex-direction: row; 
    gap: var(--space-4); 
    justify-content: center; 
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: var(--space-3);
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
}