/* ========================================
   bulut.academy - Dark Mode Premium Landing Page
   ======================================== */

/* Root Variables */
:root {
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #1a1a2e;
  --color-bg-tertiary: #16213e;
  --color-accent-orange: #ff6b35;
  --color-accent-blue: #00d4ff;
  --color-accent-green: #00ff88;
  --color-text-primary: #e9ecef;
  --color-text-secondary: #adb5bd;
  --color-text-muted: #6c757d;
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-orange: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
  --gradient-blue: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
  --shadow-lg: 0 10px 40px rgba(0, 212, 255, 0.15);
  --shadow-xl: 0 20px 60px rgba(0, 212, 255, 0.25);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }

p {
  margin-bottom: 1rem;
}

strong {
  color: var(--color-accent-blue);
}

.highlight-orange {
  color: var(--color-accent-orange);
  font-weight: 700;
}

/* Section Styles */
.section {
  padding: 80px 0;
  position: relative;
}

.section-dark {
  background-color: var(--color-bg-secondary);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 100%);
  padding: 100px 0;
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.badge-container {
  animation: fadeInDown 1s ease-out;
}

.badge-elite {
  display: inline-block;
  padding: 8px 20px;
  background: var(--gradient-orange);
  color: white;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  border-radius: 50px;
  text-transform: uppercase;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.2;
  color: white;
  margin-bottom: 1.5rem;
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-stats {
  animation: fadeInUp 1s ease-out 0.8s both;
}

.stat-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 30px 20px;
  text-align: center;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.stat-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-accent-blue);
  box-shadow: var(--shadow-lg);
}

.stat-card i {
  font-size: 2.5rem;
  color: var(--color-accent-orange);
  margin-bottom: 15px;
  display: block;
}

.stat-card h3 {
  font-size: 2.5rem;
  color: white;
  margin-bottom: 5px;
}

.stat-card p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn-cta {
  background: var(--gradient-orange);
  color: white !important;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 16px 40px;
  border: none;
  border-radius: 50px;
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
  position: relative;
  overflow: hidden;
}

.btn-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(255, 107, 53, 0.6);
  color: white !important;
}

.btn-cta:active {
  transform: translateY(-1px);
}

.btn-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left 0.5s;
}

.btn-cta:hover::before {
  left: 100%;
}

/* ========================================
   PROBLEM & SOLUTION SECTION
   ======================================== */
.problem-card,
.solution-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 40px;
  height: 100%;
  transition: var(--transition);
}

.problem-card:hover,
.solution-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-blue);
}

.problem-icon,
.solution-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin-bottom: 25px;
}

.problem-icon {
  background: linear-gradient(135deg, #ff6b6b 0%, #c92a2a 100%);
  color: white;
}

.solution-icon {
  background: var(--gradient-blue);
  color: white;
}

.problem-list,
.solution-list {
  list-style: none;
  padding: 0;
}

.problem-list li,
.solution-list li {
  display: flex;
  align-items: flex-start;
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.problem-list i {
  color: #ff6b6b;
  font-size: 1.2rem;
  margin-right: 15px;
  margin-top: 3px;
  flex-shrink: 0;
}

.solution-list i {
  color: var(--color-accent-green);
  font-size: 1.2rem;
  margin-right: 15px;
  margin-top: 3px;
  flex-shrink: 0;
}

.solution-intro {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
}

.alert {
  border-radius: 12px;
  border: none;
  padding: 15px 20px;
}

.alert-success {
  background: rgba(0, 255, 136, 0.1);
  color: var(--color-accent-green);
  border-left: 4px solid var(--color-accent-green);
}

.alert-info {
  background: rgba(0, 212, 255, 0.1);
  color: var(--color-accent-blue);
  border-left: 4px solid var(--color-accent-blue);
}

.alert-warning {
  background: rgba(255, 193, 7, 0.1);
  color: #ffc107;
  border-left: 4px solid #ffc107;
}

/* ========================================
   CURRICULUM TIMELINE
   ======================================== */
.timeline {
  position: relative;
  padding-left: 50px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent-blue) 0%, var(--color-accent-orange) 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 50px;
}

.timeline-marker {
  position: absolute;
  left: -36px;
  top: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  box-shadow: 0 0 0 4px var(--color-bg-secondary), 0 0 20px rgba(255, 107, 53, 0.5);
  z-index: 2;
}

.timeline-content {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 30px;
  transition: var(--transition);
}

.timeline-content:hover {
  transform: translateX(10px);
  border-color: var(--color-accent-blue);
  box-shadow: var(--shadow-lg);
}

.timeline-badge {
  display: inline-block;
  padding: 5px 15px;
  background: var(--gradient-blue);
  color: white;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 20px;
  margin-bottom: 15px;
}

.timeline-content h3 {
  color: white;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.timeline-content ul {
  list-style: none;
  padding: 0;
}

.timeline-content li {
  padding-left: 25px;
  margin-bottom: 12px;
  position: relative;
  color: var(--color-text-secondary);
}

.timeline-content li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--color-accent-orange);
  font-weight: bold;
}

/* ========================================
   TARGET AUDIENCE SECTION
   ======================================== */
.audience-card {
  background: rgba(255, 255, 255, 0.03);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 40px;
  height: 100%;
  transition: var(--transition);
}

.audience-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.audience-fit {
  border-color: rgba(0, 255, 136, 0.3);
}

.audience-fit:hover {
  border-color: var(--color-accent-green);
  box-shadow: 0 10px 40px rgba(0, 255, 136, 0.2);
}

.audience-not-fit {
  border-color: rgba(255, 107, 107, 0.3);
}

.audience-not-fit:hover {
  border-color: #ff6b6b;
  box-shadow: 0 10px 40px rgba(255, 107, 107, 0.2);
}

.audience-header {
  display: flex;
  align-items: center;
  margin-bottom: 30px;
}

.audience-header i {
  font-size: 3rem;
  margin-right: 20px;
}

.audience-fit .audience-header i {
  color: var(--color-accent-green);
}

.audience-not-fit .audience-header i {
  color: #ff6b6b;
}

.audience-header h3 {
  font-size: 1.8rem;
  color: white;
  margin: 0;
}

.audience-list {
  list-style: none;
  padding: 0;
}

.audience-list li {
  display: flex;
  align-items: flex-start;
  margin-bottom: 18px;
  font-size: 1.05rem;
}

.audience-list i {
  margin-right: 15px;
  margin-top: 3px;
  font-size: 1rem;
  flex-shrink: 0;
}

.audience-fit .audience-list i {
  color: var(--color-accent-green);
}

.audience-not-fit .audience-list i {
  color: #ff6b6b;
}

/* ========================================
   MENTOR SECTION
   ======================================== */
.mentor-photo {
  position: relative;
  display: inline-block;
}

.mentor-photo img {
  border: 4px solid var(--color-accent-blue);
  box-shadow: var(--shadow-xl);
  transition: var(--transition);
}

.mentor-photo:hover img {
  transform: scale(1.05);
  box-shadow: 0 20px 60px rgba(0, 212, 255, 0.4);
}

.mentor-badge {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-orange);
  color: white;
  padding: 8px 20px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.5);
}

.mentor-bio h3 {
  color: white;
  font-size: 2rem;
}

.mentor-bio .lead {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
}

.mentor-highlights {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 25px;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 15px;
}

.highlight-item:last-child {
  margin-bottom: 0;
}

.highlight-item i {
  color: var(--color-accent-orange);
  font-size: 1.3rem;
  margin-right: 15px;
  margin-top: 3px;
  flex-shrink: 0;
}

/* ========================================
   PRICING SECTION
   ======================================== */
.pricing-card {
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 24px;
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent-orange);
}

.pricing-badge {
  background: var(--gradient-orange);
  color: white;
  text-align: center;
  padding: 12px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.pricing-header {
  text-align: center;
  padding: 40px 30px;
  background: rgba(255, 255, 255, 0.03);
}

.pricing-header h3 {
  font-size: 2rem;
  color: white;
  margin-bottom: 20px;
}

.price-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 10px;
}

.price-old {
  font-size: 1.5rem;
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.price-current {
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-accent-orange);
  line-height: 1;
}

.price-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.pricing-body {
  padding: 40px 30px;
}

.pricing-body h4 {
  color: white;
  font-size: 1.5rem;
  text-align: center;
}

.pricing-features {
  list-style: none;
  padding: 0;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  margin-bottom: 18px;
  font-size: 1.05rem;
}

.pricing-features i {
  color: var(--color-accent-green);
  font-size: 1.2rem;
  margin-right: 15px;
  margin-top: 3px;
  flex-shrink: 0;
}

.pricing-footer {
  background: rgba(255, 255, 255, 0.03);
  padding: 25px 30px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.pricing-footer p {
  margin: 0;
  color: var(--color-text-secondary);
}

/* ========================================
   APPLICATION FORM
   ======================================== */
.application-form-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 50px;
  box-shadow: var(--shadow-lg);
}

.form-label {
  color: var(--color-text-primary);
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.form-control,
.form-select {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text-primary);
  padding: 12px 16px;
  border-radius: 10px;
  transition: var(--transition);
  font-size: 1rem;
}

.form-control:focus,
.form-select:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
  color: white;
  outline: none;
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

.form-select option {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.form-check-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.3);
  width: 20px;
  height: 20px;
}

.form-check-input:checked {
  background-color: var(--color-accent-orange);
  border-color: var(--color-accent-orange);
}

.form-check-input:focus {
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-check-label {
  color: var(--color-text-secondary);
  margin-left: 8px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-bg-secondary);
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 80px;
}

.footer p {
  margin: 0;
  color: var(--color-text-secondary);
}

.footer strong {
  color: var(--color-accent-orange);
}

.footer i {
  color: var(--color-accent-blue);
}

/* ========================================
   TOAST NOTIFICATION
   ======================================== */
.toast {
  background: rgba(26, 26, 46, 0.98);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(10px);
}

.toast-header {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.toast-body {
  color: var(--color-text-secondary);
}

.btn-close {
  filter: invert(1);
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 991px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .timeline {
    padding-left: 30px;
  }

  .timeline::before {
    left: 10px;
  }

  .timeline-marker {
    left: -26px;
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }

  .application-form-card {
    padding: 30px 20px;
  }
}

@media (max-width: 767px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section {
    padding: 50px 0;
  }

  .btn-cta {
    font-size: 1rem;
    padding: 14px 30px;
  }

  .stat-card h3 {
    font-size: 2rem;
  }

  .price-current {
    font-size: 3rem;
  }
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 4px;
}