/* Main Stylesheet - 건강 1도씨존 */
/* 디자인 리드 이준혁, UI 디자이너 김태희 협업 */

/* ==========================================================================
   CSS Variables - 디자인 시스템
   ========================================================================== */
:root {
  /* Primary Colors - 붉은색 계열 */
  --color-primary: #C41E3A;
  --color-primary-light: #E63950;
  --color-primary-dark: #9B1830;
  --color-primary-bg: #FEF2F4;

  /* Secondary Colors */
  --color-secondary: #2C3E50;
  --color-secondary-light: #34495E;

  /* Accent Colors */
  --color-accent: #E74C3C;
  --color-accent-gold: #D4AF37;

  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;

  /* Semantic Colors */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;

  /* Typography */
  --font-family-primary: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-secondary: 'Noto Sans KR', sans-serif;

  /* Font Sizes - 40-60대 대응 */
  --font-size-xs: 0.875rem;    /* 14px */
  --font-size-sm: 1rem;        /* 16px */
  --font-size-base: 1.125rem;  /* 18px - 기본 본문 */
  --font-size-lg: 1.25rem;     /* 20px */
  --font-size-xl: 1.5rem;      /* 24px */
  --font-size-2xl: 1.875rem;   /* 30px */
  --font-size-3xl: 2.25rem;    /* 36px */
  --font-size-4xl: 3rem;       /* 48px */
  --font-size-5xl: 3.75rem;    /* 60px */

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */
  --spacing-4xl: 6rem;     /* 96px */

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --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 -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease-out;
  --transition-slow: 500ms ease-out;

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-tooltip: 600;

  /* Container */
  --container-max: 1280px;
  --container-padding: 1.5rem;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */
body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  line-height: var(--line-height-normal);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, .h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
}

h2, .h2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
}

h3, .h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
}

h4, .h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-800);
}

h5, .h5 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-800);
}

p {
  margin-bottom: var(--spacing-md);
}

.text-primary {
  color: var(--color-primary);
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--color-gray-500);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header__logo-img {
  height: 48px;
  width: auto;
}

.header__logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav__link {
  position: relative;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  transition: var(--transition-fast);
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-primary);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition-fast);
  transform: translateX(-50%);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  min-width: 44px;
  min-height: 44px;
  justify-content: center;
  align-items: center;
}

.nav__toggle-bar {
  width: 24px;
  height: 3px;
  background: var(--color-gray-700);
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
}

/* ==========================================================================
   Navigation Submenu
   ========================================================================== */
.nav__item--has-sub {
  position: relative;
}

.nav__item--has-sub > .nav__link {
  gap: var(--spacing-xs);
}

.nav__arrow {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.nav__item--has-sub.is-open > .nav__link .nav__arrow {
  transform: rotate(180deg);
}

.nav__sub {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 160px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-sm) 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-dropdown);
  list-style: none;
}

.nav__item--has-sub:hover > .nav__sub,
.nav__item--has-sub.is-open > .nav__sub {
  opacity: 1;
  visibility: visible;
}

.nav__sub-link {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  transition: var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
}

.nav__sub-link:hover,
.nav__sub-link.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

/* ==========================================================================
   Buttons - 고령층 대응 (최소 44x44px)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  min-height: 48px;
  min-width: 44px;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary-bg);
}

.btn-lg {
  min-height: 56px;
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-lg);
}

.btn-xl {
  min-height: 64px;
  padding: var(--spacing-lg) var(--spacing-3xl);
  font-size: var(--font-size-xl);
  border-radius: var(--radius-lg);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-white) 100%);
  padding-top: 80px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
  opacity: 0.1;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero__badge {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-lg);
}

.hero__title {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.hero__title-highlight {
  color: var(--color-primary);
  position: relative;
}

.hero__description {
  font-size: var(--font-size-xl);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-2xl);
  line-height: var(--line-height-relaxed);
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  gap: var(--spacing-3xl);
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-gray-200);
}

.hero__stat {
  text-align: center;
}

.hero__stat-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.hero__stat-label {
  font-size: var(--font-size-base);
  color: var(--color-gray-500);
  margin-top: var(--spacing-xs);
}

/* ==========================================================================
   Sections
   ========================================================================== */
.section {
  padding: var(--spacing-4xl) 0;
}

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

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

.section--primary-light {
  background: var(--color-primary-bg);
}

.section__header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-3xl);
}

.section__badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.section__title {
  margin-bottom: var(--spacing-md);
}

.section__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
}

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

.card__icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-lg);
}

.card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
}

.card__description {
  color: var(--color-gray-600);
  margin-bottom: 0;
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

/* ==========================================================================
   Values Section - 예방/치료/건강/행복
   ========================================================================== */
.values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.value-item {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
}

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

.value-item__number {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  margin: 0 auto var(--spacing-lg);
}

.value-item__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-sm);
}

.value-item__description {
  color: var(--color-gray-600);
  font-size: var(--font-size-base);
}

/* ==========================================================================
   Timeline / Annual Plan
   ========================================================================== */
.timeline {
  position: relative;
  padding: var(--spacing-2xl) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 4px;
  height: 100%;
  background: var(--color-primary-bg);
  transform: translateX(-50%);
}

.timeline__item {
  position: relative;
  display: flex;
  justify-content: flex-end;
  padding-right: 50%;
  margin-bottom: var(--spacing-3xl);
}

.timeline__item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: 50%;
}

.timeline__content {
  width: calc(100% - 60px);
  padding: var(--spacing-xl);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.timeline__year {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  transform: translate(-50%, -50%);
  z-index: 1;
}

.timeline__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.timeline__description {
  color: var(--color-gray-600);
}

/* ==========================================================================
   Franchise Section
   ========================================================================== */
.franchise-highlight {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.franchise-highlight__content {
  padding-right: var(--spacing-2xl);
}

.franchise-highlight__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-lg);
}

.franchise-highlight__price {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.franchise-highlight__price-value {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.franchise-highlight__price-unit {
  font-size: var(--font-size-xl);
  color: var(--color-gray-600);
}

.franchise-highlight__features {
  margin-bottom: var(--spacing-xl);
}

.franchise-highlight__feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.franchise-highlight__feature-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.franchise-highlight__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

/* ==========================================================================
   Steps / Process
   ========================================================================== */
.steps {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-lg);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 50px;
  left: 80px;
  right: 80px;
  height: 4px;
  background: var(--color-gray-200);
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step__number {
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  border: 4px solid var(--color-primary);
  color: var(--color-primary);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  margin: 0 auto var(--spacing-lg);
}

.step__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
}

.step__description {
  color: var(--color-gray-600);
  font-size: var(--font-size-base);
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: var(--spacing-4xl) 0;
  text-align: center;
  color: var(--color-white);
}

.cta__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

.cta__description {
  font-size: var(--font-size-xl);
  opacity: 0.9;
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta__phone {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xl);
}

.cta .btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.cta .btn-secondary:hover {
  background: var(--color-gray-100);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.footer__description {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.footer__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  color: var(--color-gray-400);
  transition: var(--transition-fast);
  padding: var(--spacing-xs) 0;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.footer__bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-gray-800);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.footer__legal {
  display: flex;
  gap: var(--spacing-lg);
}

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

.footer__legal-link:hover {
  color: var(--color-white);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-sm);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  min-height: 48px;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  background: var(--color-white);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-hint {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-top: var(--spacing-xs);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}

/* ==========================================================================
   Utilities
   ========================================================================== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.grid {
  display: grid;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

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

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

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

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

.animate-fadeIn {
  animation: fadeIn 0.6s ease-out forwards;
}

.animate-slideInLeft {
  animation: slideInLeft 0.6s ease-out forwards;
}

.animate-slideInRight {
  animation: slideInRight 0.6s ease-out forwards;
}

/* Animation delays for staggered effects */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* ==========================================================================
   Product Detail Page
   ========================================================================== */
.product-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.product-image img {
  width: 100%;
  height: auto;
  display: block;
}

.product-specs {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--spacing-sm) var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.product-specs dt {
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  white-space: nowrap;
}

.product-specs dd {
  color: var(--color-gray-700);
}

.case-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--color-primary);
  transition: var(--transition-base);
}

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

.case-card__year {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
}

.case-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray-900);
}

.case-card__description {
  color: var(--color-gray-600);
  margin-bottom: 0;
}