/* ========================================
   电子请帖邀请函 - 全局样式
   温暖信封主题 | 移动端竖屏适配
   ======================================== */

:root {
  --color-primary: #f7658b;
  --color-primary-light: #ff93ab;
  --color-primary-dark: #e14e74;
  --color-primary-bg: #fff0f4;
  --color-primary-border: #ffd6e0;
  --color-bg: #ffffff;
  --color-bg-gray: #fdf7ef;
  --color-text: #43332b;
  --color-text-light: #9c8570;
  --color-text-lighter: #b8a38c;
  --color-border: #eee0cd;
  --color-success: #f0a35e;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(231, 78, 116, 0.08);
  --shadow-md: 0 4px 12px rgba(231, 78, 116, 0.12);
  --shadow-lg: 0 8px 24px rgba(231, 78, 116, 0.16);
  --max-width: 480px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--color-bg-gray);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* 页面容器 - 移动端居中 */
.page-container {
  max-width: var(--max-width);
  margin: 0 auto;
  min-height: 100vh;
  background: var(--color-bg);
  position: relative;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.04);
}

/* ========================================
   顶部导航
   ======================================== */
.navbar {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.navbar-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.navbar-link {
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  opacity: 0.9;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.15);
  transition: background 0.2s;
}

.navbar-link:active {
  background: rgba(255, 255, 255, 0.3);
}

/* ========================================
   按钮系统
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
  -webkit-appearance: none;
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:active {
  transform: scale(0.97);
  box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
}

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

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

.btn-success {
  background: linear-gradient(135deg, #059669, var(--color-success));
  color: #fff;
}

.btn-danger {
  background: linear-gradient(135deg, #dc2626, var(--color-danger));
  color: #fff;
}

.btn-lg {
  padding: 18px 32px;
  font-size: 18px;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  width: auto;
}

/* ========================================
   语音输入大按钮
   ======================================== */
.voice-btn {
  width: 100%;
  padding: 24px;
  border: none;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.voice-btn:active {
  transform: scale(0.97);
}

.voice-btn.recording {
  background: linear-gradient(135deg, #dc2626, #ef4444);
  animation: pulse 1.5s ease-in-out infinite;
}

.voice-btn .voice-icon {
  font-size: 36px;
  line-height: 1;
}

.voice-btn .voice-hint {
  font-size: 13px;
  font-weight: 400;
  opacity: 0.85;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
  50% { box-shadow: 0 0 0 12px rgba(239, 68, 68, 0); }
}

/* ========================================
   步骤向导
   ======================================== */
.steps-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 20px 10px;
  gap: 8px;
}

.step-dot {
  display: flex;
  align-items: center;
  gap: 8px;
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-border);
  color: var(--color-text-lighter);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  transition: all 0.3s;
  flex-shrink: 0;
}

.step-num.active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 0 4px var(--color-primary-bg);
}

.step-num.done {
  background: var(--color-success);
  color: #fff;
}

.step-line {
  width: 24px;
  height: 2px;
  background: var(--color-border);
  transition: background 0.3s;
}

.step-line.done {
  background: var(--color-success);
}

.step-label {
  font-size: 11px;
  color: var(--color-text-lighter);
  margin-top: 4px;
  text-align: center;
}

.step-label.active {
  color: var(--color-primary);
  font-weight: 600;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

/* ========================================
   表单元素
   ======================================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-label .required {
  color: var(--color-danger);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 16px;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.2s;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-bg);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.6;
}

/* ========================================
   卡片
   ======================================== */
.card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ========================================
   请柬预览
   ======================================== */
.invitation-preview {
  background: linear-gradient(180deg, #eff6ff 0%, #ffffff 100%);
  border: 2px solid var(--color-primary-border);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.invitation-preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary), var(--color-primary-light));
}

.invitation-preview .inv-decoration {
  font-size: 24px;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.invitation-preview .inv-topic {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 16px;
  line-height: 1.4;
}

.invitation-preview .inv-image {
  width: 100%;
  max-height: 280px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin: 16px 0;
  border: 3px solid #fff;
  box-shadow: var(--shadow-md);
}

.invitation-preview .inv-field {
  margin: 10px 0;
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.8;
}

.invitation-preview .inv-field-label {
  color: var(--color-primary);
  font-weight: 600;
  margin-right: 6px;
}

.invitation-preview .inv-remarks {
  margin-top: 16px;
  padding: 12px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-text-light);
}

.invitation-preview .inv-footer {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px dashed var(--color-primary-border);
  font-size: 13px;
  color: var(--color-text-lighter);
}

/* ========================================
   图片上传区域
   ======================================== */
.upload-area {
  width: 100%;
  min-height: 200px;
  border: 2px dashed var(--color-primary-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--color-primary-bg);
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.upload-area:active {
  border-color: var(--color-primary);
  background: #dbeafe;
}

.upload-area .upload-icon {
  font-size: 40px;
  color: var(--color-primary);
}

.upload-area .upload-text {
  font-size: 15px;
  color: var(--color-text-light);
  font-weight: 500;
}

.upload-area .upload-hint {
  font-size: 13px;
  color: var(--color-text-lighter);
}

.upload-area img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.upload-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.upload-actions .btn {
  flex: 1;
}

/* ========================================
   加载动画
   ======================================== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  gap: 16px;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-primary-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  font-size: 15px;
  color: var(--color-primary);
  font-weight: 500;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========================================
   Toast 提示
   ======================================== */
.toast {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(30, 41, 59, 0.9);
  color: #fff;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  max-width: 320px;
  text-align: center;
}

.toast.show {
  opacity: 1;
}

.toast.success {
  background: rgba(16, 185, 129, 0.9);
}

.toast.error {
  background: rgba(239, 68, 68, 0.9);
}

/* ========================================
   分享区域
   ======================================== */
.share-section {
  text-align: center;
  padding: 24px 20px;
}

.share-link-box {
  background: var(--color-bg-gray);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 16px 0;
  word-break: break-all;
  font-size: 14px;
  color: var(--color-primary);
  font-family: monospace;
}

.share-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.share-actions .btn {
  flex: 1;
}

/* ========================================
   历史记录列表
   ======================================== */
.record-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-primary);
  transition: transform 0.2s;
}

.record-card:active {
  transform: scale(0.98);
}

.record-card .record-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.record-card .record-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.record-card .record-date {
  font-size: 12px;
  color: var(--color-text-lighter);
}

.record-card .record-info {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 4px 0;
}

.record-card .record-stats {
  display: flex;
  gap: 12px;
  margin-top: 10px;
}

.record-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.record-badge.attend {
  background: #d1fae5;
  color: #059669;
}

.record-badge.decline {
  background: #fee2e2;
  color: #dc2626;
}

.record-badge.total {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

/* ========================================
   回执页面
   ======================================== */
.rsvp-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  text-align: center;
}

.rsvp-buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  max-width: 360px;
  margin-top: 32px;
}

.rsvp-result {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 40px 24px;
}

.rsvp-result .result-icon {
  font-size: 64px;
}

.rsvp-result .result-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
}

/* ========================================
   空状态
   ======================================== */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--color-text-lighter);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.empty-state .empty-text {
  font-size: 15px;
}

/* ========================================
   工具类
   ======================================== */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-muted { color: var(--color-text-light); }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.hidden { display: none !important; }

/* ========================================
   微信内置浏览器兼容
   ======================================== */
@media (max-width: 480px) {
  html { font-size: 15px; }
  .invitation-preview .inv-topic { font-size: 20px; }
  .invitation-preview .inv-field { font-size: 14px; }
}

/* 安全区域适配 */
@supports (padding: max(0px)) {
  .navbar {
    padding-top: max(16px, env(safe-area-inset-top));
  }
  .page-container {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* 防止微信内字体缩放 */
body {
  -webkit-text-size-adjust: 100% !important;
  text-size-adjust: 100% !important;
}

/* ============ 封面合成面板 ============ */
.frame-style-row {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.frame-style-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 4px;
  border: 2px solid var(--color-border, #d7e3f4);
  border-radius: 12px;
  background: #ffffff;
  font-size: 12px;
  color: var(--color-text-light, #5a6b85);
  cursor: pointer;
  transition: all .2s;
}
.frame-style-btn.active {
  border-color: var(--color-primary, #2f6fc4);
  color: var(--color-primary, #2f6fc4);
  background: #f0f6ff;
  box-shadow: 0 0 0 2px rgba(47,111,196,.12);
}
.frame-swatch {
  width: 100%;
  height: 26px;
  border-radius: 6px;
  display: block;
}
.swatch-blue { background: linear-gradient(135deg, #0c2a5e, #2f6fc4); }
.swatch-gold { background: linear-gradient(135deg, #7a5218, #e5bf6b); }
.swatch-white { background: linear-gradient(135deg, #ffffff, #dce8f7); border: 1px solid #d3ddee; }
.compose-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary-dark, #123a72);
  margin-bottom: 6px;
}
.compose-preview-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border, #d7e3f4);
  margin-bottom: 12px;
  background: #eef2f8;
}
.compose-preview-wrap canvas {
  display: block;
  width: 100%;
  height: auto;
}

/* ============ 信封风格输入界面（Step1） ============ */
/* 可爱字体 */
.cute-font,
.cute-font .voice-btn,
.cute-font .btn {
  font-family: "Yuanti SC", "YouYuan", "Kaiti SC", "STKaiti", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* 信封场景容器 */
.envelope-scene {
  position: relative;
  border-radius: 24px;
  padding: 30px 20px 28px;
  margin-bottom: 20px;
  background:
    radial-gradient(circle at 88% 8%, rgba(255, 255, 255, 0.6), transparent 42%),
    linear-gradient(160deg, #fdf3e0 0%, #f8e6c2 100%);
  border: 2px solid #ecd2a0;
  box-shadow: 0 10px 26px rgba(212, 158, 80, 0.22);
  overflow: hidden;
}

/* 信封顶部封口横条 */
.envelope-scene::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 16px;
  background: linear-gradient(180deg, #f2d195, #f9e9c6);
  border-bottom: 2px dashed #e3c391;
}

/* 信封翻盖三角（顶部中央向下） */
.envelope-scene::after {
  content: '';
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  border-style: solid;
  border-width: 0 96px 50px 96px;
  border-color: transparent transparent #f3d49a transparent;
  z-index: 0;
}

.envelope-scene > * {
  position: relative;
  z-index: 1;
}

/* 邮票装饰 */
.envelope-stamp {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 54px;
  height: 60px;
  background: #ffffff;
  border: 1px dashed #d9b37e;
  padding: 4px;
  box-shadow: 0 2px 6px rgba(180, 130, 60, 0.18);
  transform: rotate(7deg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  z-index: 2;
}
.envelope-stamp::after {
  content: '';
  position: absolute;
  inset: 3px;
  border: 1px solid #f0ddbe;
  border-radius: 2px;
}

/* 火漆印章 */
.envelope-wax {
  position: absolute;
  bottom: -16px;
  left: 20px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: radial-gradient(circle at 34% 28%, #ff9d9d, #e05a5a 55%, #c0392b);
  box-shadow: 0 4px 10px rgba(192, 57, 43, 0.35), inset 0 -2px 4px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  border: 3px solid #ecd3a0;
  z-index: 2;
}

/* 信封内标题 */
.envelope-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: #a9713a;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

/* 信封内描述文字 */
.envelope-desc {
  font-size: 14px;
  color: #b08a5c;
  margin-bottom: 16px;
  line-height: 1.7;
}

/* 语音状态文字 */
.envelope-status {
  font-size: 13px;
  color: #c9a375;
  margin-top: 12px;
  text-align: center;
  min-height: 20px;
}

/* 可爱语音按钮 */
.voice-btn-cute {
  border-radius: 50px;
  background: linear-gradient(135deg, #ffab8e 0%, #ff6a88 100%);
  box-shadow: 0 6px 18px rgba(255, 106, 136, 0.35);
  color: #fff;
}
.voice-btn-cute .voice-icon {
  font-size: 38px;
}
.voice-btn-cute:active {
  transform: scale(0.97);
}
.voice-btn-cute.recording {
  background: linear-gradient(135deg, #e05656, #c0392b);
  animation: pulse 1.5s ease-in-out infinite;
}

/* 信纸卡片（手动输入） */
.envelope-paper {
  position: relative;
  background:
    repeating-linear-gradient(
      to bottom,
      transparent 0px,
      transparent 26px,
      #f7ecd8 26px,
      #f7ecd8 27px
    ),
    #fffdf7;
  border: 2px solid #efdcba;
  border-radius: 20px;
  padding: 22px 18px 20px;
  margin-bottom: 20px;
  box-shadow: 0 6px 16px rgba(180, 130, 60, 0.12);
}

/* 信纸夹子 */
.envelope-paper .paper-clip {
  position: absolute;
  top: -8px;
  right: 16px;
  font-size: 26px;
  z-index: 3;
  transform: rotate(-12deg);
  filter: drop-shadow(0 2px 3px rgba(180, 130, 60, 0.3));
}

/* 信纸内表单 */
.envelope-paper .form-label {
  color: #a9713a;
}
.envelope-paper .form-input,
.envelope-paper .form-textarea {
  border-radius: 14px;
  border: 2px solid #efdcba;
  background: #ffffff;
  color: #5c4433;
}
.envelope-paper .form-input:focus,
.envelope-paper .form-textarea:focus {
  border-color: #ff8fa3;
  box-shadow: 0 0 0 3px rgba(255, 143, 163, 0.18);
}
.envelope-paper .form-input::placeholder,
.envelope-paper .form-textarea::placeholder {
  color: #cbb89a;
}

/* 下一步按钮（可爱风） */
.btn-next-cute {
  border-radius: 50px;
  background: linear-gradient(135deg, #ffab8e, #ff6a88);
  box-shadow: 0 8px 20px rgba(255, 106, 136, 0.35);
  letter-spacing: 1px;
  color: #fff;
}
.btn-next-cute:active {
  transform: scale(0.97);
  box-shadow: 0 4px 12px rgba(255, 106, 136, 0.3);
}