/* ============================================
   旅行明信片 - 静态网站样式
   保留原始React项目的所有设计
   ============================================ */

/* CSS Variables */
:root {
  --radius: 0.75rem;
  --background: oklch(0.985 0.003 75);
  --foreground: oklch(0.25 0.015 50);
  --card: oklch(0.995 0.002 75);
  --card-foreground: oklch(0.25 0.015 50);
  --primary: oklch(0.45 0.08 50);
  --primary-foreground: oklch(0.98 0.005 75);
  --secondary: oklch(0.95 0.01 75);
  --secondary-foreground: oklch(0.35 0.02 50);
  --muted: oklch(0.96 0.008 75);
  --muted-foreground: oklch(0.55 0.02 50);
  --accent: oklch(0.93 0.02 75);
  --accent-foreground: oklch(0.3 0.02 50);
  --border: oklch(0.91 0.01 75);
  --ring: oklch(0.55 0.1 50);
  --font-serif: 'Noto Serif SC', 'Playfair Display', serif;
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-display: 'Playfair Display', 'Noto Serif SC', serif;
}

/* Reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  min-height: 100vh;
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(248, 247, 245, 0.8);
  border-bottom: 1px solid oklch(0.91 0.01 75 / 50%);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--foreground);
}

.logo-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: linear-gradient(135deg, oklch(0.45 0.08 50) 0%, oklch(0.55 0.1 40) 100%);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 2px 8px oklch(0.5 0.05 50 / 8%);
}

.nav-logo span {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  text-decoration: none;
  color: var(--muted-foreground);
  font-size: 0.875rem;
  transition: all 0.2s;
}

.nav-link:hover {
  color: var(--foreground);
  background: var(--secondary);
}

.nav-link.active {
  color: var(--foreground);
}

.nav-link span:first-child {
  font-size: 1rem;
}

@media (max-width: 640px) {
  .nav-text {
    display: none;
  }
}

/* ============================================
   页面切换
   ============================================ */
.page {
  display: none;
  min-height: 100vh;
  padding-top: 4rem;
}

.page.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ============================================
   首页 Hero
   ============================================ */
.hero {
  position: relative;
  padding: 8rem 1rem 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-blur {
  position: absolute;
  border-radius: 50%;
  filter: blur(64px);
  opacity: 0.15;
}

.hero-blur-1 {
  top: 5rem;
  left: 2.5rem;
  width: 18rem;
  height: 18rem;
  background: oklch(0.45 0.08 50);
}

.hero-blur-2 {
  bottom: 2.5rem;
  right: 2.5rem;
  width: 24rem;
  height: 24rem;
  background: oklch(0.93 0.02 75);
  opacity: 0.3;
}

.hero-blur-3 {
  top: 10rem;
  right: 5rem;
  width: 12rem;
  height: 12rem;
  background: oklch(0.45 0.08 50);
  opacity: 0.08;
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 48rem;
  margin: 0 auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  background: oklch(0.45 0.08 50 / 8%);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 2rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: 3.75rem;
  }
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 4.5rem;
  }
}

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

.hero-desc {
  font-size: 1.125rem;
  color: var(--muted-foreground);
  line-height: 1.75;
  max-width: 32rem;
  margin: 0 auto 2.5rem;
}

@media (min-width: 640px) {
  .hero-desc {
    font-size: 1.25rem;
  }
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }
}

/* ============================================
   按钮
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s;
  border: 1px solid transparent;
}

.btn-lg {
  padding: 0.75rem 2rem;
  font-size: 1rem;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
  box-shadow: 0 4px 16px oklch(0.5 0.05 50 / 15%);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px oklch(0.5 0.05 50 / 20%);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: oklch(0.91 0.01 75);
  color: var(--foreground);
}

.btn-outline:hover {
  background: var(--secondary);
}

/* ============================================
   Features
   ============================================ */
.features {
  padding: 5rem 1rem;
  background: oklch(0.95 0.01 75);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

@media (min-width: 640px) {
  .section-header h2 {
    font-size: 2.25rem;
  }
}

.section-header p {
  color: var(--muted-foreground);
  font-size: 1.125rem;
  max-width: 24rem;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  padding: 1.5rem;
  border-radius: 1rem;
  background: var(--card);
  border: 1px solid oklch(0.91 0.01 75 / 50%);
  transition: all 0.3s;
}

.feature-card:hover {
  border-color: oklch(0.45 0.08 50 / 20%);
  box-shadow: 0 8px 24px oklch(0.5 0.05 50 / 5%);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.75rem;
  background: oklch(0.45 0.08 50 / 10%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  line-height: 1.625;
}

/* ============================================
   How it works
   ============================================ */
.how-it-works {
  padding: 5rem 1rem;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 48rem;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.step-number {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, oklch(0.45 0.08 50) 0%, oklch(0.55 0.1 40) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary-foreground);
  box-shadow: 0 4px 12px oklch(0.5 0.05 50 / 15%);
  flex-shrink: 0;
}

.step-content h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step-content p {
  color: var(--muted-foreground);
  line-height: 1.75;
}

/* ============================================
   CTA
   ============================================ */
.cta {
  padding: 5rem 1rem;
  background: oklch(0.95 0.01 75);
  text-align: center;
}

.cta h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

@media (min-width: 640px) {
  .cta h2 {
    font-size: 2.25rem;
  }
}

.cta p {
  color: var(--muted-foreground);
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 2rem 1rem;
  border-top: 1px solid oklch(0.91 0.01 75 / 50%);
  text-align: center;
}

.footer p {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

/* ============================================
   创建页面
   ============================================ */
.create-page {
  min-height: calc(100vh - 4rem);
  padding: 6rem 1rem 3rem;
}

.create-container {
  max-width: 42rem;
  margin: 0 auto;
}

.nfc-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: oklch(0.45 0.08 50 / 5%);
  border: 1px solid oklch(0.45 0.08 50 / 10%);
  border-radius: 0.5rem;
  color: var(--primary);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

/* Progress Steps */
.progress-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.step-indicator {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--muted);
  color: var(--muted-foreground);
  transition: all 0.3s;
}

.step-indicator.active {
  background: var(--primary);
  color: var(--primary-foreground);
  box-shadow: 0 2px 8px oklch(0.5 0.05 50 / 20%);
}

.step-indicator.done {
  background: oklch(0.45 0.08 50 / 10%);
  color: var(--primary);
}

.step-icon {
  font-size: 0.75rem;
}

.step-label {
  display: none;
}

@media (min-width: 640px) {
  .step-label {
    display: inline;
  }
}

.step-line {
  width: 1.5rem;
  height: 2px;
  background: oklch(0.91 0.01 75);
}

.step-line.active {
  background: var(--primary);
}

/* Loading State */
.loading-state {
  text-align: center;
  padding: 4rem 1rem;
}

.loading-icon {
  width: 5rem;
  height: 5rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, oklch(0.45 0.08 50) 0%, oklch(0.55 0.1 40) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2.5rem;
  box-shadow: 0 4px 16px oklch(0.5 0.05 50 / 15%);
  animation: pulse 2s ease-in-out infinite;
}

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

.loading-state h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.loading-state p {
  color: var(--muted-foreground);
}

/* Error State */
.error-state {
  text-align: center;
  padding: 4rem 1rem;
}

.error-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 1rem;
  background: oklch(0.577 0.245 27.325 / 10%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 2rem;
}

.error-state h2 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.error-state p {
  color: var(--muted-foreground);
  margin-bottom: 1.5rem;
}

/* Result State */
.result-state {
  animation: fadeInUp 0.6s ease;
}

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

.result-header {
  text-align: center;
  margin-bottom: 2rem;
}

.result-header h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.result-header p {
  color: var(--muted-foreground);
}

/* ============================================
   明信片卡片
   ============================================ */
.postcard-card {
  position: relative;
  border-radius: 0.5rem;
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: 0 8px 32px oklch(0.5 0.05 50 / 12%), 0 2px 8px oklch(0.5 0.05 50 / 8%);
}

.postcard-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #e8dcc8 0%, #d9cdb8 50%, #e5d9c3 100%);
}

.postcard-content {
  position: relative;
  z-index: 1;
  height: 100%;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, rgba(250, 248, 243, 0.9) 0%, rgba(245, 241, 232, 0.85) 100%);
}

.postcard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
  flex-shrink: 0;
}

.location-info {
  flex: 1;
  min-width: 0;
}

.location-label {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: oklch(0.35 0.08 50);
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
}

.location-name {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: oklch(0.25 0.08 50);
  line-height: 1.3;
}

@media (min-width: 640px) {
  .location-name {
    font-size: 1.25rem;
  }
}

.weather-stamp {
  width: 4rem;
  height: 4rem;
  border: 2px solid oklch(0.35 0.08 50 / 40%);
  border-radius: 0.25rem;
  background: oklch(0.98 0.01 75 / 60%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transform: rotate(-12deg);
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.15);
  flex-shrink: 0;
}

@media (min-width: 640px) {
  .weather-stamp {
    width: 4rem;
    height: 4rem;
  }
}

.weather-stamp span:first-child {
  font-size: 1.25rem;
}

.weather-stamp span:last-child {
  font-weight: 700;
  color: oklch(0.35 0.08 50);
  font-size: 0.75rem;
}

.weather-info {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  font-size: 0.75rem;
  color: oklch(0.35 0.08 50 / 80%);
  margin-bottom: 0.75rem;
  flex-shrink: 0;
}

.divider {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-shrink: 0;
}

.divider-line {
  flex: 1;
  height: 1px;
  background: oklch(0.35 0.08 50 / 20%);
}

.divider-text {
  font-family: var(--font-serif);
  font-size: 0.75rem;
  color: oklch(0.35 0.08 50 / 60%);
  font-style: italic;
}

.poem-content {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

.poem-content h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: oklch(0.25 0.08 50);
  text-align: center;
  margin-bottom: 0.5rem;
}

@media (min-width: 640px) {
  .poem-content h3 {
    font-size: 1.125rem;
  }
}

.poem-content p {
  font-family: var(--font-serif);
  font-size: 0.875rem;
  line-height: 1.8;
  color: oklch(0.35 0.08 50 / 85%);
  text-align: center;
  margin-bottom: 0.25rem;
}

@media (min-width: 640px) {
  .poem-content p {
    font-size: 1rem;
  }
}

.postcard-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.5rem;
  border-top: 1px solid oklch(0.35 0.08 50 / 20%);
  flex-shrink: 0;
}

.postcard-time {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: oklch(0.35 0.08 50 / 60%);
}

.postcard-nfc {
  font-size: 0.75rem;
  color: oklch(0.35 0.08 50 / 40%);
  font-family: monospace;
}

/* 邮票 */
.postage-stamp {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 4rem;
  height: 4rem;
  transform: rotate(15deg);
  filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.2));
  z-index: 2;
}

@media (min-width: 640px) {
  .postage-stamp {
    width: 5rem;
    height: 5rem;
  }
}

.stamp-content {
  width: 100%;
  height: 100%;
  border: 2px solid oklch(0.45 0.1 50);
  border-radius: 50%;
  background: radial-gradient(circle, oklch(0.98 0.02 75) 0%, oklch(0.95 0.01 75) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.stamp-top {
  font-size: 0.5rem;
  font-weight: 700;
  color: oklch(0.35 0.08 50);
  letter-spacing: 0.5px;
}

.stamp-middle {
  font-size: 0.625rem;
  color: oklch(0.35 0.08 50);
}

.stamp-bottom {
  font-size: 0.5rem;
  color: oklch(0.35 0.08 50);
}

/* Action Buttons */
.action-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* ============================================
   历史页面
   ============================================ */
.history-page,
.footprints-page {
  min-height: calc(100vh - 4rem);
  padding: 6rem 1rem 3rem;
}

.page-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.page-header .badge {
  margin-bottom: 1rem;
}

.page-header h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

@media (min-width: 640px) {
  .page-header h1 {
    font-size: 2.25rem;
  }
}

.page-header p {
  color: var(--muted-foreground);
  font-size: 1.125rem;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
}

.empty-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 1rem;
  background: oklch(0.45 0.08 50 / 10%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 2rem;
}

.empty-state h2 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--muted-foreground);
  margin-bottom: 1.5rem;
  max-width: 24rem;
  margin-left: auto;
  margin-right: auto;
}

/* Postcard List */
.postcard-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .postcard-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Map Container */
.map-container {
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid oklch(0.91 0.01 75 / 50%);
  box-shadow: 0 4px 16px oklch(0.5 0.05 50 / 8%);
  margin-bottom: 1.5rem;
}

.map-placeholder {
  height: 500px;
  background: oklch(0.96 0.008 75);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--muted-foreground);
}

@media (min-width: 640px) {
  .map-placeholder {
    height: 600px;
  }
}

.map-placeholder p:first-child {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.map-note {
  font-size: 0.875rem;
}

/* Footprints List */
.footprints-list h3 {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  padding: 0 0.25rem;
}

.footprints-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .footprints-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footprints-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footprint-item {
  display: flex;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: 0.75rem;
  border: 1px solid oklch(0.91 0.01 75 / 50%);
  background: var(--card);
  transition: all 0.2s;
  cursor: pointer;
}

.footprint-item:hover {
  border-color: oklch(0.45 0.08 50 / 20%);
  box-shadow: 0 4px 12px oklch(0.5 0.05 50 / 5%);
}

.footprint-number {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: linear-gradient(135deg, oklch(0.45 0.08 50) 0%, oklch(0.55 0.1 40) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-foreground);
  flex-shrink: 0;
}

.footprint-info {
  flex: 1;
  min-width: 0;
}

.footprint-info h4 {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--foreground);
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footprint-poem {
  font-size: 0.75rem;
  color: oklch(0.45 0.08 50 / 70%);
  font-style: italic;
  margin-bottom: 0.5rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footprint-meta {
  display: flex;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

.footprint-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

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

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
  opacity: 0;
}

.animate-delay-100 { animation-delay: 100ms; }
.animate-delay-200 { animation-delay: 200ms; }
.animate-delay-300 { animation-delay: 300ms; }
.animate-delay-400 { animation-delay: 400ms; }
.animate-delay-500 { animation-delay: 500ms; }

/* ============================================
   打印样式
   ============================================ */
@media print {
  .navbar,
  .footer,
  .action-buttons,
  .nfc-indicator,
  .progress-steps {
    display: none !important;
  }

  .page {
    display: block !important;
    padding-top: 0;
  }

  .postcard-card {
    box-shadow: none;
    border: 2px solid #d4af37;
  }
}