/**
 * Our Love Story - Stylesheet
 * 求婚网站样式文件
 *
 * 设计方案：梦幻渐变风
 */

/* ==================== CSS 变量定义 ==================== */
:root {
  /* 主色调 - 梦幻渐变 */
  --primary-pink: #ff6b9d;
  --primary-purple: #c06cf1;
  --primary-blue: #667eea;

  /* 辅助色 */
  --bg-white: #ffffff;
  --text-dark: #333333;
  --text-gray: #666666;
  --text-light: #999999;
  --border-light: #e0e0e0;
  --shadow: rgba(0, 0, 0, 0.1);

  /* 渐变色 */
  --gradient-main: linear-gradient(135deg, #ff6b9d 0%, #c06cf1 50%, #667eea 100%);
  --gradient-btn: linear-gradient(135deg, #ff6b9d, #c06cf1);
  --gradient-text: linear-gradient(135deg, #ff6b9d, #c06cf1);

  /* 字体 */
  --font-heading: 'Playfair Display', 'Noto Serif SC', serif;
  --font-english: 'Poppins', 'Helvetica Neue', sans-serif;
  --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;

  /* 字号 - 桌面端 */
  --text-hero: 48px;
  --text-h1: 36px;
  --text-h2: 28px;
  --text-h3: 24px;
  --text-body: 16px;
  --text-small: 14px;
  --text-mini: 12px;

  /* 字重 */
  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* 间距 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --shadow-color: 0 4px 20px rgba(255, 107, 157, 0.3);

  /* 过渡 */
  --transition-fast: 0.2s;
  --transition-base: 0.3s;
  --transition-slow: 0.6s;
  --transition-slower: 1s;

  /* 缓动 */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ==================== 重置样式 ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-dark);
  line-height: 1.6;
  background: var(--bg-white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

input {
  font-family: inherit;
  outline: none;
}

/* ==================== 密码验证页面 ==================== */
.auth-page {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 1;
  transition: opacity var(--transition-base) ease;
}

.auth-container {
  text-align: center;
  padding: var(--spacing-xl);
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  max-width: 400px;
  width: 90%;
  animation: scaleIn var(--transition-slower) var(--ease-bounce);
}

.auth-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-md);
  animation: heartbeat 1.5s ease-in-out infinite;
}

.auth-title {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: var(--font-bold);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.auth-subtitle {
  font-size: var(--text-body);
  color: var(--text-gray);
  margin-bottom: var(--spacing-lg);
}

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

.auth-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-full);
  font-size: var(--text-body);
  text-align: center;
  margin-bottom: var(--spacing-md);
  transition: border-color var(--transition-base) ease;
}

.auth-input:focus {
  border-color: var(--primary-pink);
}

.auth-button {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--gradient-btn);
  color: white;
  font-size: var(--text-body);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-color);
  transition: transform var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
}

.auth-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255, 107, 157, 0.4);
}

.auth-button:active {
  transform: scale(0.95);
}

.auth-error {
  color: #e74c3c;
  font-size: var(--text-small);
  min-height: 20px;
  margin-bottom: var(--spacing-sm);
}

.auth-hint {
  font-size: var(--text-mini);
  color: var(--text-light);
}

/* ==================== 主页面 ==================== */
.main-page {
  opacity: 0;
  transition: opacity var(--transition-base) ease;
}

.main-page.active {
  opacity: 1;
}

/* ==================== Hero 欢迎区 ==================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-main);
  position: relative;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  color: white;
  z-index: 2;
  animation: fadeInUp var(--transition-slower) var(--ease-out);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--text-hero);
  font-weight: var(--font-bold);
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-h3);
  font-weight: var(--font-light);
  opacity: 0.95;
  margin-bottom: var(--spacing-2xl);
}

.scroll-indicator {
  margin-top: var(--spacing-xl);
  animation: bounce 2s infinite;
}

.scroll-text {
  display: block;
  font-size: var(--text-small);
  margin-bottom: var(--spacing-xs);
  opacity: 0.9;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-bottom: 2px solid white;
  border-right: 2px solid white;
  transform: rotate(45deg);
  margin: 0 auto;
}

/* ==================== 区域通用样式 ==================== */
.photos-section,
.stories-section,
.ending-section {
  padding: var(--spacing-3xl) var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: var(--font-bold);
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--text-body);
  color: var(--text-gray);
}

/* ==================== 照片画廊 ==================== */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform var(--transition-base) ease, box-shadow var(--transition-base) ease;

  /* 动画初始状态 */
  opacity: 0;
  transform: translateY(30px);
}

.gallery-item.fade-in {
  animation: fadeInUp var(--transition-slow) var(--ease-out) forwards;
}

.gallery-item:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-md);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base) ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-sm);
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: white;
  font-size: var(--text-small);
  text-align: center;
  opacity: 0;
  transition: opacity var(--transition-base) ease;
}

.gallery-item:hover .gallery-item-title {
  opacity: 1;
}

/* ==================== 爱情故事时刻 ==================== */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-md);
}

.story-card {
  position: relative;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--primary-pink);
  transition: transform var(--transition-base) ease, box-shadow var(--transition-base) ease;

  /* 动画初始状态 */
  opacity: 0;
  transform: translateX(-30px);
}

.story-card.fade-in {
  animation: fadeInLeft var(--transition-slow) var(--ease-out) forwards;
}

.story-card:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
}

.story-icon {
  font-size: 32px;
  margin-bottom: var(--spacing-sm);
}

.story-date {
  font-size: var(--text-small);
  color: var(--primary-pink);
  font-weight: var(--font-medium);
  margin-bottom: var(--spacing-xs);
}

.story-title {
  font-size: var(--text-h3);
  font-weight: var(--font-semibold);
  margin-bottom: var(--spacing-xs);
  color: var(--text-dark);
}

.story-description {
  font-size: var(--text-body);
  color: var(--text-gray);
  line-height: 1.8;
}

/* ==================== 结束区域 ==================== */
.ending-section {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.ending-text {
  font-size: var(--text-h3);
  color: var(--text-gray);
  font-style: italic;
  opacity: 0.8;
}

/* ==================== 求婚弹窗 ==================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 998;
  display: none;
  opacity: 0;
  transition: opacity var(--transition-base) ease;
}

.modal-backdrop.active {
  opacity: 1;
}

.proposal-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  background: white;
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  max-width: 500px;
  width: 90%;
  z-index: 999;
  display: none;
  text-align: center;
  opacity: 0;
  transition: opacity var(--transition-base) ease, transform var(--transition-base) var(--ease-bounce);
}

.proposal-modal.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.modal-icon {
  font-size: 72px;
  margin-bottom: var(--spacing-md);
  animation: rotateIn 0.8s var(--ease-bounce);
}

.modal-question {
  font-family: var(--font-body);
  font-size: var(--text-h2);
  font-weight: var(--font-semibold);
  color: var(--text-dark);
  margin-bottom: var(--spacing-xl);
  line-height: 1.5;
}

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

.modal-button {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--text-body);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  min-width: 120px;
  transition: all var(--transition-fast) ease;
}

.modal-button-yes {
  background: var(--gradient-btn);
  color: white;
  box-shadow: var(--shadow-color);
}

.modal-button-yes:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 24px rgba(255, 107, 157, 0.4);
}

.modal-button-no {
  background: transparent;
  color: var(--text-gray);
  border: 2px solid var(--border-light);
}

.modal-button-no:hover {
  background: #f5f5f5;
  border-color: var(--text-gray);
}

.modal-button:active {
  transform: scale(0.95);
}

.modal-success {
  padding: var(--spacing-md);
}

.success-message {
  font-size: var(--text-h2);
  font-weight: var(--font-semibold);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.6s ease;
}

/* ==================== 照片查看器 (Lightbox) ==================== */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 9998;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base) ease;
}

.lightbox.active {
  opacity: 1;
}

.lightbox-close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  font-size: 48px;
  color: white;
  cursor: pointer;
  z-index: 10;
  transition: transform var(--transition-fast) ease;
}

.lightbox-close:hover {
  transform: rotate(90deg);
}

.lightbox-image {
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox-caption {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  color: white;
  font-size: var(--text-body);
  background: rgba(0, 0, 0, 0.5);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
}

/* ==================== 烟花画布 ==================== */
.fireworks-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9997;
  pointer-events: none;
}

/* ==================== 动画定义 ==================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes rotateIn {
  from {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
  }
  to {
    opacity: 1;
    transform: rotate(0) scale(1);
  }
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  25% { transform: scale(1.1); }
  50% { transform: scale(1); }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

/* ==================== 响应式设计 ==================== */

/* 平板 (768px 以下) */
@media (max-width: 768px) {
  :root {
    --text-hero: 36px;
    --text-h1: 28px;
    --text-h2: 22px;
    --text-h3: 18px;
    --text-body: 14px;
    --spacing-3xl: 64px;
    --spacing-2xl: 48px;
  }

  .gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }

  .photos-section,
  .stories-section,
  .ending-section {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

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

  .timeline {
    padding: 0;
  }

  .story-card {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
  }

  .modal-buttons {
    flex-direction: column;
  }

  .modal-button {
    width: 100%;
  }

  .proposal-modal {
    padding: var(--spacing-xl);
  }

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

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

/* 手机 (480px 以下) */
@media (max-width: 480px) {
  :root {
    --text-hero: 28px;
    --text-h1: 24px;
    --text-h2: 20px;
    --text-h3: 16px;
    --spacing-2xl: 32px;
  }

  .auth-container {
    padding: var(--spacing-lg);
  }

  .auth-icon {
    font-size: 48px;
  }

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

  .modal-icon {
    font-size: 56px;
  }

  .modal-question {
    font-size: var(--text-h3);
  }

  .success-message {
    font-size: var(--text-h3);
  }

  .lightbox-close {
    font-size: 36px;
    top: var(--spacing-md);
    right: var(--spacing-md);
  }
}

/* 桌面大屏 (1440px 以上) */
@media (min-width: 1440px) {
  .gallery {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ==================== 打印样式 ==================== */
@media print {
  .auth-page,
  .modal-backdrop,
  .proposal-modal,
  .lightbox,
  .scroll-indicator {
    display: none !important;
  }

  .main-page {
    display: block !important;
    opacity: 1 !important;
  }
}

/* ==================== 辅助类 ==================== */
.hidden {
  display: none !important;
}

.fade-out {
  animation: fadeOut 0.3s ease forwards;
}

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