/* ===== Design System - Premium Dark Theme ===== */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --accent: #06b6d4;
  --accent-glow: rgba(6, 182, 212, 0.4);
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.3);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.3);
  --danger: #ef4444;

  --bg-dark: #0a0a0f;
  --bg-card: rgba(255, 255, 255, 0.03);
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-strong: rgba(255, 255, 255, 0.08);

  --text: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(99, 102, 241, 0.5);

  --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.15);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-button: 0 4px 24px rgba(99, 102, 241, 0.4);

  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
}

/* ===== Reset & Base ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ===== Animated Background ===== */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse 40% 60% at 50% 90%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ===== Landing Page ===== */
.landing {
  position: relative;
  z-index: 1;
}

/* ===== Hero Section ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  position: relative;
  gap: 60px;
}

@media (max-width: 1024px) {
  .hero-section {
    flex-direction: column;
    padding: 100px 24px 60px;
    gap: 48px;
  }

  .hero-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .hero-buttons {
    justify-content: center;
  }
}

.hero-content {
  max-width: 560px;
  animation: fadeUp 1s ease-out;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
  font-size: clamp(48px, 8vw, 72px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -3px;
  margin-bottom: 16px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-description {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 480px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Buttons ===== */
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border: none;
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-button);
  font-family: inherit;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.primary-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.primary-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(99, 102, 241, 0.5);
}

.primary-button:hover::before {
  left: 100%;
}

.primary-button.large {
  padding: 20px 40px;
  font-size: 18px;
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--glass-border);
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
  text-decoration: none;
  backdrop-filter: blur(12px);
}

.secondary-button:hover {
  background: var(--glass-strong);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.secondary-button.ghost {
  background: transparent;
  border-color: transparent;
}

.secondary-button.ghost:hover {
  background: var(--glass);
}

/* ===== Hero Visual ===== */
.hero-visual {
  position: relative;
  animation: fadeUp 1s ease-out 0.3s both;
}

.phone-mockup {
  width: 280px;
  height: 560px;
  background: linear-gradient(145deg, #1a1a2e 0%, #0f0f1a 100%);
  border-radius: 40px;
  padding: 12px;
  box-shadow:
    0 50px 100px -20px rgba(0, 0, 0, 0.5),
    0 0 60px rgba(99, 102, 241, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--bg-dark);
  border-radius: 32px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 24px;
}

.mockup-image {
  width: 100%;
  height: 200px;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  overflow: hidden;
}

.mockup-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mockup-score {
  display: flex;
  align-items: baseline;
  justify-content: center;
  padding: 16px 32px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.4);
}

.mockup-number {
  font-size: 48px;
  font-weight: 800;
  color: white;
  letter-spacing: -2px;
}

.mockup-label {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 600;
}

/* Floating Cards */
.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--glass-strong);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  box-shadow: var(--shadow-card);
}

.floating-card svg {
  color: var(--accent);
}

.card-1 {
  top: 60px;
  right: -40px;
  animation: float-1 6s ease-in-out infinite;
}

.card-2 {
  bottom: 80px;
  left: -60px;
  animation: float-2 6s ease-in-out infinite 1s;
}

@keyframes float-1 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

@keyframes float-2 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(15px); }
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 1px;
  animation: fadeIn 1s ease-out 1.5s both;
}

.mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0%, 100% { opacity: 1; top: 8px; }
  50% { opacity: 0.3; top: 20px; }
}

@media (max-width: 768px) {
  .scroll-indicator {
    display: none;
  }
}

/* ===== Sections Common ===== */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  padding: 8px 16px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1px;
}

/* ===== Features Section ===== */
.features-section {
  padding: 120px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

@media (max-width: 700px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  padding: 32px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  transition: all 0.4s ease;
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  background: var(--glass-strong);
  border-color: var(--border-glow);
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  margin-bottom: 24px;
}

.feature-icon.purple {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
  color: var(--primary-light);
}

.feature-icon.cyan {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.2) 0%, rgba(34, 211, 238, 0.2) 100%);
  color: var(--accent);
}

.feature-icon.green {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(52, 211, 153, 0.2) 100%);
  color: var(--success);
}

.feature-icon.orange {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(251, 191, 36, 0.2) 100%);
  color: var(--warning);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

/* ===== How It Works Section ===== */
.how-section {
  padding: 120px 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.steps-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 240px;
  max-width: 280px;
  padding: 32px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  text-align: center;
  position: relative;
  backdrop-filter: blur(10px);
}

.step-number {
  font-size: 48px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  position: absolute;
  top: 16px;
  left: 24px;
}

.step-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-visual {
  margin-top: 24px;
}

.step-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  margin: 0 auto;
  color: var(--primary-light);
}

.step-icon.processing {
  color: var(--accent);
  animation: spin 4s linear infinite;
}

.step-icon.complete {
  color: var(--success);
}

.step-connector {
  color: var(--text-muted);
  opacity: 0.3;
}

@media (max-width: 900px) {
  .step-connector {
    display: none;
  }
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 120px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-content h2 {
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.cta-content p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.cta-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

/* ===== Footer ===== */
.footer {
  padding: 40px 24px;
  text-align: center;
  border-top: 1px solid var(--glass-border);
}

.footer p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== App Section ===== */
.app {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* ===== Results Section - Slider ===== */
.results-section {
  animation: fadeIn 0.6s ease-out;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.slider-container {
  width: 100%;
  max-width: 600px;
  position: relative;
  margin-bottom: 20px;
}

.slider-wrapper {
  display: flex;
  overflow: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-xl);
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.slide {
  min-width: 100%;
  scroll-snap-align: start;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  height: 75vh;
  min-height: 500px;
}

.slide-content {
  width: 100%;
  max-width: 560px;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.slide-content.scrollable {
  overflow: hidden;
}

.scrollable-content {
  flex: 1;
  overflow-y: auto;
  padding-right: 12px;
  margin-top: 12px;
}

.scrollable-content::-webkit-scrollbar {
  width: 6px;
}

.scrollable-content::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
}

.scrollable-content::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 10px;
}

.slide-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
  text-align: center;
  letter-spacing: -0.5px;
}

/* ===== Slide 1: Photo + Overall Score ===== */
.photo-score-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  height: 100%;
  justify-content: center;
  padding: 16px 0;
}

.slide-photo-preview {
  width: calc(100% - 32px);
  max-width: 520px;
  flex: 1;
  min-height: 200px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--bg-dark);
  border: 1px solid var(--glass-border);
  position: relative;
}

.slide-photo-preview::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  box-shadow: inset 0 0 60px rgba(0, 0, 0, 0.3);
  pointer-events: none;
}

.slide-photo-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.overall-score {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.score-badge {
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  padding: 18px 36px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #7c3aed 100%);
  border-radius: var(--radius-lg);
  box-shadow:
    0 8px 40px rgba(99, 102, 241, 0.4),
    0 0 80px rgba(99, 102, 241, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  margin-bottom: 12px;
  position: relative;
  overflow: hidden;
  animation: scoreGlow 3s ease-in-out infinite alternate;
}

@keyframes scoreGlow {
  0% { box-shadow: 0 8px 40px rgba(99, 102, 241, 0.4), 0 0 60px rgba(99, 102, 241, 0.15); }
  100% { box-shadow: 0 8px 50px rgba(99, 102, 241, 0.5), 0 0 80px rgba(99, 102, 241, 0.25); }
}

.score-badge::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
  animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%) rotate(0deg); }
  100% { transform: translateX(100%) rotate(0deg); }
}

.score-badge #overallScore {
  font-size: 64px;
  font-weight: 800;
  color: white;
  line-height: 1;
  letter-spacing: -3px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 1;
}

.score-label {
  font-size: 24px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 600;
  margin-left: 4px;
  position: relative;
  z-index: 1;
}

.scene-type {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  font-weight: 600;
  padding: 6px 16px;
  background: var(--glass);
  border-radius: 100px;
  border: 1px solid var(--glass-border);
  display: inline-block;
}

/* ===== Slide 2: Scores ===== */
.score-group {
  margin-bottom: 20px;
  padding: 20px;
  background: var(--glass);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.score-group:hover {
  background: var(--glass-strong);
  border-color: var(--border-glow);
}

.score-group:last-of-type {
  margin-bottom: 0;
}

.score-group h3 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.score-bar {
  margin-bottom: 16px;
}

.score-bar:last-child {
  margin-bottom: 0;
}

.score-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 14px;
}

.score-label-row .label {
  color: var(--text-secondary);
  font-weight: 500;
}

.score-label-row .value {
  font-weight: 700;
  color: var(--text);
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}

.bar-track {
  height: 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 10px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  box-shadow: 0 0 20px var(--accent-glow);
}

.bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.3), transparent);
  border-radius: 10px 10px 0 0;
}

/* ===== Slide 3: Feedback ===== */
.feedback-block {
  margin-bottom: 28px;
}

.feedback-block:last-child {
  margin-bottom: 0;
}

.feedback-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.3px;
}

.feedback-title.success {
  color: var(--success);
  text-shadow: 0 0 30px var(--success-glow);
}

.feedback-title.primary {
  color: var(--primary-light);
  text-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
}

.feedback-title.warning {
  color: var(--warning);
  text-shadow: 0 0 30px var(--warning-glow);
}

.strengths-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.03) 100%);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 40px rgba(16, 185, 129, 0.1);
}

.strengths-card ul {
  list-style: none;
  padding-left: 0;
}

.strengths-card li {
  padding: 14px 0 14px 36px;
  position: relative;
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  font-weight: 500;
  border-bottom: 1px solid rgba(16, 185, 129, 0.1);
}

.strengths-card li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.strengths-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 20px;
  height: 20px;
  background: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 15px var(--success-glow);
}

.strengths-card li::after {
  content: "✓";
  position: absolute;
  left: 5px;
  top: 14px;
  color: white;
  font-size: 12px;
  font-weight: 700;
}

.improvements-card {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(99, 102, 241, 0.03) 100%);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.1);
}

.improvement-item {
  padding: 18px 0;
  border-bottom: 1px solid rgba(99, 102, 241, 0.15);
}

.improvement-item:first-child {
  padding-top: 0;
}

.improvement-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.improvement-item strong {
  display: block;
  color: var(--text);
  margin-bottom: 10px;
  font-size: 15px;
  font-weight: 700;
}

.improvement-item p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

.tips-card {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.03) 100%);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 40px rgba(245, 158, 11, 0.1);
}

.tips-card ul {
  list-style: none;
  padding-left: 0;
}

.tips-card li {
  padding: 14px 0 14px 36px;
  position: relative;
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  font-weight: 500;
  border-bottom: 1px solid rgba(245, 158, 11, 0.1);
}

.tips-card li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.tips-card li::before {
  content: "→";
  position: absolute;
  left: 0;
  top: 12px;
  color: var(--warning);
  font-weight: 700;
  font-size: 20px;
  text-shadow: 0 0 15px var(--warning-glow);
}

/* ===== Slider Navigation ===== */
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--glass-strong);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  color: var(--text);
  cursor: pointer;
  z-index: 10;
  display: none;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-card);
}

.slider-arrow:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  transform: translateY(-50%) scale(1.1);
  box-shadow: var(--shadow-button);
}

.slider-arrow-left { left: -70px; }
.slider-arrow-right { right: -70px; }

.slider-arrow:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.slider-arrow:disabled:hover {
  background: var(--glass-strong);
  color: var(--text);
  transform: translateY(-50%);
}

@media (min-width: 768px) {
  .slider-arrow { display: flex; }
}

/* ===== Slider Dots ===== */
.slider-dots {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
  padding: 16px 0;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  padding: 0;
}

.slider-dot.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  width: 32px;
  border-radius: 5px;
  box-shadow: 0 0 20px var(--accent-glow);
}

.slider-dot:hover:not(.active) {
  background: rgba(255, 255, 255, 0.4);
  transform: scale(1.2);
}

/* ===== Loading Overlay ===== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(20px);
}

.loading-overlay p {
  color: var(--text);
  margin-top: 32px;
  font-size: 18px;
  font-weight: 500;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

.spinner {
  width: 64px;
  height: 64px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--primary);
  border-right-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.3);
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Mobile Optimizations ===== */
@media (max-width: 768px) {
  .hero-section {
    padding: 80px 20px 60px;
  }

  .hero-visual {
    transform: scale(0.85);
  }

  .floating-card {
    display: flex;
    font-size: 12px;
    padding: 10px 14px;
  }

  .card-1 {
    top: 40px;
    right: -10px;
  }

  .card-2 {
    bottom: 60px;
    left: -10px;
  }

  .features-section,
  .how-section,
  .cta-section {
    padding: 80px 20px;
  }

  .app {
    padding: 24px 16px;
  }

  .slide {
    padding: 20px;
    height: 70vh;
    min-height: 450px;
  }

  .slide-photo-preview {
    width: calc(100% - 24px);
    max-width: none;
  }

  .photo-score-container {
    gap: 16px;
    padding: 12px 0;
  }

  .score-badge {
    padding: 14px 28px;
  }

  .score-badge #overallScore {
    font-size: 56px;
  }

  .score-label {
    font-size: 20px;
  }

  .slide-title {
    font-size: 20px;
    margin-bottom: 16px;
  }

  .score-group {
    padding: 16px;
    margin-bottom: 16px;
  }

  .score-group h3 {
    font-size: 12px;
    margin-bottom: 14px;
  }

  .bar-track {
    height: 8px;
  }

  .feedback-block {
    margin-bottom: 24px;
  }

  .feedback-title {
    font-size: 16px;
  }

  .strengths-card,
  .improvements-card,
  .tips-card {
    padding: 20px;
  }

  .strengths-card li,
  .tips-card li {
    font-size: 14px;
    padding: 12px 0 12px 32px;
  }

  .improvement-item strong {
    font-size: 14px;
  }

  .improvement-item p {
    font-size: 13px;
  }

  .primary-button {
    padding: 14px 28px;
    font-size: 15px;
  }

  .secondary-button {
    padding: 14px 24px;
    font-size: 15px;
  }

  .slider-dots {
    margin-top: 20px;
    padding: 12px 0;
  }
}

@media (max-width: 480px) {
  .slide {
    padding: 10px;
    height: 68vh;
  }

  .slide-photo-preview {
    width: calc(100% - 16px);
  }

  .photo-score-container {
    gap: 12px;
    padding: 8px 0;
  }

  .score-badge {
    padding: 12px 24px;
  }

  .score-badge #overallScore {
    font-size: 48px;
  }

  .score-label {
    font-size: 18px;
  }
}

@media (max-height: 700px) {
  .slide {
    padding: 10px;
    height: 72vh;
  }

  .photo-score-container {
    gap: 12px;
    padding: 8px 0;
  }

  .score-badge {
    padding: 12px 24px;
  }

  .score-badge #overallScore {
    font-size: 48px;
  }

  .slider-dots {
    margin-top: 14px;
    padding: 8px 0;
  }
}

/* Hide slider scrollbar */
.slider-wrapper {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.slider-wrapper::-webkit-scrollbar {
  display: none;
}