/* ========================================
   Landing Page Styles - Toss Insurance-style
   Full-screen sections, large typography, scroll animations
   ======================================== */

/* --- Hero Section (100vh) --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(180deg, var(--color-white) 0%, #F0F6FF 100%);
  padding: var(--spacing-3xl) var(--spacing-lg);
  overflow: hidden;
}

.hero-inner {
  max-width: 720px;
}

.hero-headline {
  font-size: var(--font-size-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--color-text-main);
  margin-bottom: var(--spacing-lg);
  word-break: keep-all;
}

.hero-sub {
  font-size: var(--font-size-lg);
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-bottom: var(--spacing-2xl);
}

/* --- Hero Slider (크로스페이드 전환) --- */
.hero-slider {
  margin-top: var(--spacing-2xl);
  width: 100%;
  max-width: 720px;
}

.slider-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  overflow: hidden;
  box-shadow:
    0 20px 60px rgba(49, 130, 246, 0.15),
    0 4px 16px rgba(0, 0, 0, 0.08);
}

.slider-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

.slider-slide.active {
  opacity: 1;
  transform: scale(1);
  z-index: 1;
}

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

.slider-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.5) 0%,
    rgba(0, 0, 0, 0) 50%
  );
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 24px;
}

.slider-label {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  font-size: var(--font-size-2xl);
  font-weight: 800;
  padding: 12px 40px;
  border-radius: var(--radius-full);
  letter-spacing: 0.06em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s ease 0.15s, transform 0.4s ease 0.15s;
}

.slider-slide.active .slider-label {
  opacity: 1;
  transform: translateY(0);
}

/* --- Flip Board (Airport Split-Flap Display) --- */
.flip-board {
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.flip-track {
  display: flex;
  justify-content: center;
  gap: 6px;
}

.flip-cell {
  width: 104px;
  height: 60px;
  position: relative;
  overflow: hidden;
  background: #1a1a2e;
  border-radius: 6px;
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* Split line across middle */
.flip-cell::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(0, 0, 0, 0.4);
  z-index: 2;
}

.flip-cell span {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: #e0e0e0;
  letter-spacing: 0.5px;
}

/* Flip animation state */
.flip-cell.flipping span {
  animation: splitFlapOut 0.15s ease-in forwards;
}

.flip-cell.flipping span.incoming {
  animation: splitFlapIn 0.15s 0.15s ease-out forwards;
  opacity: 0;
}

@keyframes splitFlapOut {
  0% { transform: rotateX(0); }
  100% { transform: rotateX(-90deg); opacity: 0; }
}

@keyframes splitFlapIn {
  0% { transform: rotateX(90deg); opacity: 0; }
  100% { transform: rotateX(0); opacity: 1; }
}

.flip-tagline {
  text-align: center;
  margin-top: var(--spacing-lg);
  font-size: var(--font-size-md);
  color: var(--color-text-sub);
}

.flip-tagline strong {
  color: var(--color-primary);
}

@media (max-width: 767px) {
  .flip-track {
    gap: 4px;
  }

  .flip-cell {
    width: 64px;
    height: 44px;
  }

  .flip-cell span {
    font-size: 12px;
  }

  .flip-tagline {
    font-size: var(--font-size-sm);
  }
}

/* --- Pain Points --- */
.pain-section {
  background-color: var(--color-surface);
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.pain-card {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.pain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pain-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--spacing-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}

.pain-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.pain-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.pain-card p {
  font-size: var(--font-size-md);
  color: var(--color-text-sub);
  line-height: 1.6;
}

/* --- Solution --- */
.solution-list {
  max-width: 720px;
  margin: var(--spacing-2xl) auto 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.solution-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  transition: background var(--transition-base);
}

.solution-item:hover {
  background: var(--color-surface);
}

.solution-icon {
  width: 56px;
  height: 56px;
  background: var(--color-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 24px;
  font-weight: 700;
  flex-shrink: 0;
}

.solution-icon-img {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.solution-icon-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.solution-item h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.solution-item p {
  font-size: var(--font-size-md);
  color: var(--color-text-sub);
  line-height: 1.6;
}

/* --- Calculator Section --- */
.calc-section {
  background-color: var(--color-surface);
}

/* --- Social Proof / Stats --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
  text-align: center;
}

.stat-item {
  padding: var(--spacing-xl) var(--spacing-md);
}

.stat-value {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: var(--font-size-md);
  color: var(--color-text-sub);
}

/* --- Roadmap --- */
.roadmap-section {
  background-color: var(--color-surface);
}

.roadmap {
  max-width: 720px;
  margin: var(--spacing-2xl) auto 0;
}

.roadmap-item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  transition: background var(--transition-base);
  margin-bottom: var(--spacing-md);
  text-decoration: none;
  color: inherit;
}

.roadmap-item:hover {
  background-color: var(--color-white);
}

.roadmap-number {
  width: 48px;
  height: 48px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.roadmap-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.roadmap-content p {
  font-size: var(--font-size-md);
  color: var(--color-text-sub);
  line-height: 1.6;
}

/* --- Guide Preview --- */
.guide-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.guide-preview-card {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-base);
}

.guide-preview-card:hover {
  transform: translateY(-4px);
}

.guide-preview-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.guide-preview-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.guide-preview-card:hover .guide-preview-thumb img {
  transform: scale(1.05);
}

.guide-preview-card h3 {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.guide-preview-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-sub);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- Lead Magnet --- */
.lead-magnet-section {
  background: var(--color-white);
}

.lead-magnet-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  background: linear-gradient(135deg, #0f0c29 0%, #1a1a4e 50%, #16213e 100%);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl) var(--spacing-2xl);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(49, 130, 246, 0.25);
}

.lead-magnet-card::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(49,130,246,0.18) 0%, transparent 70%);
  pointer-events: none;
}

.lead-magnet-badge-wrap {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.lead-magnet-badge {
  display: inline-block;
  background: linear-gradient(90deg, #3182F6, #6366f1);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  animation: badge-glow 2.5s ease-in-out infinite;
}

@keyframes badge-glow {
  0%, 100% { box-shadow: 0 0 8px rgba(49,130,246,0.5); }
  50%       { box-shadow: 0 0 20px rgba(49,130,246,0.9); }
}

.lead-magnet-download-count {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.6);
  font-weight: 600;
}

.lead-highlight {
  color: #60a5fa;
  position: relative;
  display: inline-block;
}

.lead-form-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  margin-bottom: 4px;
}

.lead-magnet-content .heading-md {
  color: #fff;
  margin-bottom: var(--spacing-sm);
}

.lead-magnet-content .body-md {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-md);
}

.lead-magnet-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lead-magnet-list li {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.85);
  padding-left: 20px;
  position: relative;
}

.lead-magnet-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}

.lead-magnet-form-inner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.lead-input {
  padding: 16px 20px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: var(--font-size-md);
  font-family: var(--font-family);
  transition: border-color var(--transition-base);
}

.lead-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.lead-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.lead-submit {
  width: 100%;
  cursor: pointer;
  border: none;
  font-family: var(--font-family);
  background: linear-gradient(90deg, #3182F6 0%, #6366f1 100%);
  font-size: var(--font-size-md);
  font-weight: 800;
  letter-spacing: -0.01em;
  transition: opacity 0.2s, transform 0.2s;
}

.lead-submit:hover {
  opacity: 0.92;
  transform: translateY(-2px);
}

.lead-privacy {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
}

.lead-success {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.lead-success-icon {
  font-size: 48px;
  display: block;
  margin-bottom: var(--spacing-md);
}

.lead-success p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-md);
  line-height: 1.6;
}

@media (max-width: 767px) {
  .lead-magnet-card {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl) var(--spacing-lg);
  }
}

/* --- Final CTA --- */
.final-cta {
  text-align: center;
  background-color: #F0F6FF;
}

.final-cta h2 {
  margin-bottom: var(--spacing-xl);
}

/* --- FAQ Section --- */
.faq-section {
  background-color: var(--color-surface);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text-main);
  cursor: pointer;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--color-text-weak);
  flex-shrink: 0;
  margin-left: var(--spacing-md);
  transition: transform var(--transition-base);
}

.faq-item[open] .faq-question::after {
  content: '-';
}

.faq-answer {
  padding: 0 0 20px;
}

.faq-answer p {
  font-size: var(--font-size-md);
  color: var(--color-text-sub);
  line-height: 1.7;
}

/* --- Section Header Utility --- */
.section-head {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-head .section-label {
  margin-bottom: var(--spacing-sm);
}

.section-head .heading-lg {
  margin-bottom: var(--spacing-md);
}

.section-head .body-lg {
  max-width: 600px;
  margin: 0 auto;
}

/* --- Guide Preview Header --- */
.section-head-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.section-head-row .view-all {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-sub);
  transition: color var(--transition-base);
}

.section-head-row .view-all:hover {
  color: var(--color-primary);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1023px) {
  .hero {
    min-height: auto;
    padding: 120px var(--spacing-lg) 80px;
  }

  .pain-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
  }

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .guide-preview-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 767px) {
  .hero {
    padding: 100px var(--spacing-md) 60px;
  }

  .hero-headline {
    font-size: clamp(28px, 7vw, 40px);
  }

  .hero-sub {
    font-size: var(--font-size-md);
  }

  .slider-label {
    font-size: var(--font-size-lg);
    padding: 10px 24px;
  }

  .slider-overlay {
    padding-bottom: 16px;
  }

  .solution-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-md);
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .roadmap-item {
    gap: var(--spacing-md);
  }

  .roadmap-number {
    width: 40px;
    height: 40px;
    font-size: var(--font-size-md);
  }
}