/* ========================================
   짐톡 홈페이지 스타일 (건강/AI 테마)
   색상 테마: 건강(그린/블루) + AI(퍼플/그라데이션)
   ======================================== */

:root {
  /* 건강/AI 테마 색상 */
  --primary-green: #10b981; /* 건강 - 에메랄드 그린 */
  --primary-blue: #3b82f6; /* AI - 밝은 블루 */
  --primary-purple: #8b5cf6; /* AI - 퍼플 */
  --secondary-teal: #14b8a6; /* 액센트 - 틸 */

  /* 그라데이션 */
  --gradient-health: linear-gradient(135deg, #10b981 0%, #14b8a6 100%);
  --gradient-ai: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --gradient-hero: linear-gradient(135deg, #10b981 0%, #3b82f6 50%, #8b5cf6 100%);

  /* 중립 색상 */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* 시스템 색상 */
  --white: #ffffff;
  --black: #000000;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  /* 간격 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;

  /* 폰트 */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* 둥근 모서리 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* 그림자 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* ========================================
   공통 섹션 스타일
   ======================================== */

section {
  padding: var(--spacing-2xl) 0;
}

.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-header h2 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.section-header p {
  font-size: var(--font-size-xl);
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto;
}

/* ========================================
   히어로 섹션
   ======================================== */

.hero-section {
  background: var(--gradient-hero);
  color: var(--white);
  padding: var(--spacing-2xl) 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="white" stroke-opacity="0.05" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)" /></svg>');
  opacity: 0.3;
}

.hero-section .container {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 900;
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  opacity: 0.95;
}

.hero-description {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
  white-space: pre-line;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.app-download-container {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.btn-hero-download {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-decoration: none;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.btn-hero-download:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--white);
  color: var(--primary-green);
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.btn-secondary:hover {
  background: var(--gray-50);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  color: var(--primary-green);
}

.hero-image-container {
  position: relative;
  margin-top: var(--spacing-lg);
}

.hero-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  transition: transform 0.3s ease;
}

.hero-image:hover {
  transform: scale(1.02);
}

/* ========================================
   핵심 기능 섹션
   ======================================== */

.feature-section {
  padding: var(--spacing-2xl) 0;
}

.feature-section:nth-child(even) {
  background: var(--gray-50);
}

.feature-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.feature-subtitle {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--primary-green);
  margin-bottom: var(--spacing-md);
}

.feature-description {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  white-space: pre-line;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-base);
  color: var(--gray-700);
  line-height: 1.6;
}

.feature-list li i {
  color: var(--primary-green);
  margin-top: 0.25rem;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.feature-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  transition: transform 0.3s ease;
}

.feature-image:hover {
  transform: scale(1.02);
}

/* AI 분석 기간 카드 */
.period-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.period-card {
  padding: var(--spacing-md);
  background: var(--white);
  border-left: 4px solid var(--primary-blue);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.period-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.period-card h4 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: var(--spacing-xs);
}

.period-card p {
  font-size: var(--font-size-base);
  color: var(--gray-600);
  margin: 0;
  line-height: 1.6;
}

.legal-notice {
  font-size: var(--font-size-sm);
  color: var(--warning);
  font-weight: 600;
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(245, 158, 11, 0.1);
  border-left: 3px solid var(--warning);
  border-radius: var(--radius-sm);
}

/* ========================================
   보너스 기능 섹션
   ======================================== */

.bonus-features-section {
  background: var(--gray-100);
}

.bonus-card {
  padding: var(--spacing-lg);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  height: 100%;
}

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

.bonus-card h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
}

.bonus-card p {
  font-size: var(--font-size-base);
  color: var(--gray-600);
  line-height: 1.8;
  white-space: pre-line;
  margin: 0;
}

/* ========================================
   스크린샷 섹션
   ======================================== */

.screenshots-section {
  background: var(--white);
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.screenshot-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.screenshot-item:hover {
  box-shadow: var(--shadow-2xl);
  transform: translateY(-8px);
}

.screenshot-image {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.screenshot-item:hover .screenshot-image {
  transform: scale(1.05);
}

.screenshot-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: var(--white);
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.screenshot-item:hover .screenshot-caption {
  transform: translateY(0);
}

.screenshot-caption h4 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.screenshot-caption p {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  margin: 0;
}

/* ========================================
   활용 사례 섹션
   ======================================== */

.use-cases-section {
  background: var(--gray-50);
}

.use-cases-grid {
  margin-left: -12px;
  margin-right: -12px;
}

.use-cases-grid > [class*='col-'] {
  padding-left: 12px;
  padding-right: 12px;
  margin-bottom: 24px;
}

.use-case-card {
  padding: var(--spacing-lg);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.use-case-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.use-case-icon {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  display: block;
  text-align: center;
}

.use-case-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.use-case-card p {
  font-size: var(--font-size-base);
  color: var(--gray-600);
  line-height: 1.6;
  margin: 0;
  flex-grow: 1;
}

/* ========================================
   다운로드 섹션
   ======================================== */

.download-section {
  background: var(--gradient-ai);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.download-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1.5" fill="white" fill-opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23dots)" /></svg>');
}

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

.download-content h2 {
  font-size: var(--font-size-4xl);
  font-weight: 900;
  margin-bottom: var(--spacing-md);
}

.download-subtitle {
  font-size: var(--font-size-xl);
  font-weight: 600;
  opacity: 0.95;
  margin-bottom: var(--spacing-sm);
}

.download-description {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--spacing-lg);
}

.download-buttons-large {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-download-large {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-xl);
  text-decoration: none;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.btn-download-large:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white);
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

.btn-download-large i {
  font-size: 2.5rem;
}

.download-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.download-text .get-it {
  font-size: var(--font-size-xs);
  opacity: 0.9;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.download-text .store-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

/* ========================================
   반응형 디자인
   ======================================== */

/* 태블릿 (768px 이하) */
@media (max-width: 768px) {
  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-xl);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .section-header h2 {
    font-size: var(--font-size-3xl);
  }

  .feature-title {
    font-size: var(--font-size-2xl);
  }

  .feature-subtitle {
    font-size: var(--font-size-lg);
  }

  .screenshots-grid {
    grid-template-columns: 1fr;
  }

  .download-buttons-large {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-download-large {
    justify-content: center;
  }

  .period-cards {
    grid-template-columns: 1fr;
  }
}

/* 모바일 (576px 이하) */
@media (max-width: 576px) {
  section {
    padding: var(--spacing-xl) 0;
  }

  .hero-section {
    padding: var(--spacing-xl) 0;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .section-header h2 {
    font-size: var(--font-size-2xl);
  }

  .feature-title {
    font-size: var(--font-size-xl);
  }

  .app-download-container {
    flex-direction: column;
  }

  .btn-hero-download,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  /* 모바일에서 히어로 영상 위치 조정 (세로 화면에 최적화) */
  .hero-video {
    object-position: center 25%; /* 모바일은 세로가 길어서 더 위쪽을 보여줌 */
  }
}

/* ========================================
   애니메이션
   ======================================== */

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* ========================================
   접근성
   ======================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* 포커스 스타일 */
a:focus,
button:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* ========================================
   인쇄 스타일
   ======================================== */

@media print {
  .hero-section,
  .download-section,
  .btn-hero-download,
  .btn-secondary,
  .btn-download-large {
    display: none;
  }

  section {
    page-break-inside: avoid;
  }
}

/* ========================================
   비디오 히어로 배경
   ======================================== */

.hero-video-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%; /* 영상을 위쪽 30% 위치로 조정 (얼굴이 보이도록) */
  opacity: 0.3;
}

.hero-stats {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  text-align: center;
}

/* ========================================
   운동 친구 대형 섹션 (Workout Buddy)
   ======================================== */

.workout-buddy-section {
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
  position: relative;
  overflow: hidden;
}

.workout-buddy-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="buddyPattern" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="%2310b981" stroke-opacity="0.03" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23buddyPattern)" /></svg>');
  opacity: 0.5;
}

.workout-buddy-section .container {
  position: relative;
  z-index: 1;
}

.workout-buddy-catchphrases {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin: var(--spacing-xl) auto;
  max-width: 800px;
}

.catchphrase-item {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-green);
  padding: var(--spacing-lg) var(--spacing-xl);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(16, 185, 129, 0.08) 100%);
  border-left: 5px solid var(--primary-green);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.catchphrase-item i {
  font-size: var(--font-size-2xl);
  animation: pulse 2s infinite;
}

.catchphrase-item:hover {
  transform: translateX(10px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.25);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.12) 100%);
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.workout-buddy-description {
  text-align: center;
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--gray-700);
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
}

.workout-buddy-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.workout-buddy-gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
  aspect-ratio: 3/4;
}

.workout-buddy-gallery-item:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

.workout-buddy-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 운동 친구 기능 목록 (재구성) */
.workout-buddy-features {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-xl);
  background: rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-2xl);
  backdrop-filter: blur(10px);
}

.workout-buddy-features .features-title {
  text-align: center;
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xl);
  position: relative;
  padding-bottom: var(--spacing-md);
}

.workout-buddy-features .features-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-green) 0%, var(--secondary-green) 100%);
  border-radius: var(--radius-full);
}

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

.feature-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(16, 185, 129, 0.2);
  border-color: var(--primary-green);
}

.feature-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
  border-radius: var(--radius-xl);
  color: var(--white);
  font-size: var(--font-size-2xl);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.feature-card:hover .feature-icon {
  transform: rotate(5deg) scale(1.1);
}

.feature-content {
  flex: 1;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--gray-700);
  line-height: 1.6;
}

/* CTA 버튼 영역 (대폭 개선) */
.workout-buddy-cta-wrapper {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-2xl);
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
  border-radius: var(--radius-2xl);
  text-align: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.workout-buddy-cta-wrapper .cta-title {
  font-size: var(--font-size-4xl);
  font-weight: 900;
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.workout-buddy-cta-wrapper .cta-subtitle {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: var(--spacing-xl);
}

.download-buttons-group {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.btn-download-premium {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  border: 2px solid transparent;
  min-width: 240px;
}

.btn-download-premium.google {
  border-color: rgba(52, 168, 83, 0.3);
}

.btn-download-premium.google:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(52, 168, 83, 0.3);
  border-color: #34a853;
  background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
}

.btn-download-premium.apple {
  border-color: rgba(0, 0, 0, 0.15);
}

.btn-download-premium.apple:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
  border-color: #000000;
  background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%);
}

.btn-download-premium .btn-icon {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-3xl);
  flex-shrink: 0;
}

.btn-download-premium.google .btn-icon {
  background: linear-gradient(135deg, #34a853 0%, #4caf50 100%);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(52, 168, 83, 0.3);
}

.btn-download-premium.apple .btn-icon {
  background: linear-gradient(135deg, #000000 0%, #333333 100%);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-download-premium .btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.btn-download-premium .btn-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-download-premium .btn-action {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--gray-900);
}

.btn-download-premium.google:hover .btn-icon {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(52, 168, 83, 0.4);
}

.btn-download-premium.apple:hover .btn-icon {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

/* ========================================
   Before/After 비교 섹션
   ======================================== */

.before-after-section {
  background: var(--gray-50);
}

.before-after-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.before-column,
.after-column {
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
}

.before-column {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
}

.after-column {
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
}

.before-column:hover,
.after-column:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

.before-after-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.before-column .before-after-title {
  color: #991b1b;
}

.after-column .before-after-title {
  color: #065f46;
}

.before-after-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.before-after-list li {
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-lg);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.before-column .before-after-list li {
  background: rgba(255, 255, 255, 0.5);
  color: #7f1d1d;
}

.after-column .before-after-list li {
  background: rgba(255, 255, 255, 0.5);
  color: #064e3b;
}

.before-column .before-after-list li::before {
  content: '❌';
  font-size: var(--font-size-xl);
}

.after-column .before-after-list li::before {
  content: '✅';
  font-size: var(--font-size-xl);
}

/* ========================================
   Feature 섹션 CTA 버튼
   ======================================== */

.feature-cta {
  margin-top: var(--spacing-lg);
}

.btn-feature-cta {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--gradient-health);
  color: var(--white);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.btn-feature-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--white);
}

/* ========================================
   스티키 다운로드 바 (Sticky Download Bar)
   ======================================== */

.sticky-download-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--gradient-hero);
  color: var(--white);
  padding: var(--spacing-md);
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.sticky-download-bar.show {
  transform: translateY(0);
}

.sticky-download-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  gap: var(--spacing-md);
}

.sticky-download-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.sticky-download-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-sticky-download {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.btn-sticky-download:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white);
  transform: translateY(-2px);
}

.sticky-download-close,
.sticky-close-btn {
  background: none;
  border: none;
  color: var(--white);
  font-size: var(--font-size-xl);
  cursor: pointer;
  padding: var(--spacing-xs);
  opacity: 0.8;
  transition: opacity 0.3s ease;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
}

.sticky-download-close:hover,
.sticky-close-btn:hover {
  opacity: 1;
}

/* ========================================
   반응형 - 새 섹션들
   ======================================== */

@media (max-width: 768px) {
  .workout-buddy-gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .before-after-grid {
    grid-template-columns: 1fr;
  }

  .success-stories-grid {
    grid-template-columns: 1fr;
  }

  /* 모바일에서 스티키 다운로드 바 숨김 (화면 가림 방지) */
  .sticky-download-bar {
    display: none !important;
  }

  /* 운동 친구 섹션 모바일 최적화 */
  .catchphrase-item {
    font-size: var(--font-size-lg);
    padding: var(--spacing-md) var(--spacing-lg);
  }

  .workout-buddy-description {
    font-size: var(--font-size-lg);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .workout-buddy-cta-wrapper .cta-title {
    font-size: var(--font-size-3xl);
  }

  .workout-buddy-cta-wrapper .cta-subtitle {
    font-size: var(--font-size-lg);
  }

  .download-buttons-group {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .btn-download-premium {
    width: 100%;
    min-width: auto;
  }
}

@media (max-width: 576px) {
  .workout-buddy-gallery {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-number {
    font-size: var(--font-size-4xl);
  }

  .success-story-achievement {
    font-size: var(--font-size-xl);
  }

  .sticky-download-text {
    font-size: var(--font-size-base);
  }

  .sticky-download-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn-sticky-download {
    width: 100%;
    justify-content: center;
  }

  /* 운동 친구 섹션 소형 모바일 최적화 */
  .catchphrase-item {
    font-size: var(--font-size-base);
    padding: var(--spacing-sm) var(--spacing-md);
    flex-direction: column;
    text-align: center;
  }

  .catchphrase-item i {
    font-size: var(--font-size-xl);
  }

  .workout-buddy-features {
    padding: var(--spacing-md);
  }

  .workout-buddy-features .features-title {
    font-size: var(--font-size-2xl);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    padding: var(--spacing-md);
    flex-direction: row;
    align-items: center;
  }

  .feature-icon {
    width: 50px;
    height: 50px;
    font-size: var(--font-size-xl);
  }

  .feature-content {
    font-size: var(--font-size-base);
  }

  .workout-buddy-cta-wrapper {
    padding: var(--spacing-lg);
  }

  .workout-buddy-cta-wrapper .cta-title {
    font-size: var(--font-size-2xl);
  }

  .workout-buddy-cta-wrapper .cta-subtitle {
    font-size: var(--font-size-base);
  }

  .btn-download-premium {
    padding: var(--spacing-md);
  }

  .btn-download-premium .btn-icon {
    width: 45px;
    height: 45px;
    font-size: var(--font-size-2xl);
  }

  .btn-download-premium .btn-label {
    font-size: 10px;
  }

  .btn-download-premium .btn-action {
    font-size: var(--font-size-lg);
  }
}