/* ============================================
   电子名片制作器 - Apple Design Style
   ============================================ */

/* ---------- CSS 变量（苹果色彩体系） ---------- */
:root {
  --apple-blue: #007aff;
  --apple-blue-hover: #0062cc;
  --apple-gray-1: #f5f5f7;
  --apple-gray-2: #e8e8ed;
  --apple-gray-3: #d2d2d7;
  --apple-gray-4: #86868b;
  --apple-gray-5: #6e6e73;
  --apple-gray-6: #1d1d1f;
  --apple-white: #ffffff;
  --apple-bg: #fbfbfd;
  --apple-card-bg: rgba(255, 255, 255, 0.72);
  --apple-card-border: rgba(0, 0, 0, 0.04);
  --apple-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --apple-shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
  --apple-shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.10);
  --apple-radius: 20px;
  --apple-radius-sm: 12px;
  --apple-radius-xs: 8px;
  --apple-transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  --apple-font: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont,
    'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', 'Segoe UI', sans-serif;

  /* 名片尺寸 */
  --card-h-width: 540px;
  --card-h-height: 324px;
  --card-v-width: 324px;
  --card-v-height: 540px;
}

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

body {
  font-family: var(--apple-font);
  background-color: var(--apple-bg);
  color: var(--apple-gray-6);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   顶部导航栏 - 毛玻璃效果
   ============================================ */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(251, 251, 253, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid rgba(0, 0, 0, 0.1);
}

.nav-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
  height: 48px;
  display: flex;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-icon {
  font-size: 20px;
}

.nav-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--apple-gray-6);
  letter-spacing: -0.2px;
}

/* ============================================
   Hero 区域
   ============================================ */
.hero {
  text-align: center;
  padding: 56px 22px 0;
  max-width: 680px;
  margin: 0 auto;
}

.hero-title {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.15;
  color: var(--apple-gray-6);
  margin-bottom: 10px;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--apple-gray-5);
  font-weight: 400;
  line-height: 1.5;
}

/* ============================================
   编辑区域
   ============================================ */
.editor-area {
  padding: 40px 22px 0;
}

.editor-inner {
  max-width: 980px;
  margin: 0 auto;
}

/* 第一行：公司选择 + 版式模板（两列） */
.editor-grid-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

/* 卡片块 */
.card-block {
  background: var(--apple-white);
  border-radius: var(--apple-radius);
  padding: 28px;
  box-shadow: var(--apple-shadow);
  border: 0.5px solid var(--apple-card-border);
  transition: var(--apple-transition);
}

.card-block:hover {
  box-shadow: var(--apple-shadow-md);
}

.card-block-wide {
  /* 宽版卡片占满宽度 */
}

.block-label {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--apple-gray-6);
  margin-bottom: 20px;
}

/* ---------- 苹果风格表单 ---------- */
.apple-select {
  width: 100%;
  padding: 11px 16px;
  border: 1px solid var(--apple-gray-2);
  border-radius: var(--apple-radius-sm);
  font-size: 15px;
  font-family: var(--apple-font);
  color: var(--apple-gray-6);
  background: var(--apple-gray-1);
  outline: none;
  transition: var(--apple-transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2386868b' d='M2.5 4.5l3.5 3.5 3.5-3.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  cursor: pointer;
}

.apple-select:focus {
  border-color: var(--apple-blue);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.12);
  background-color: var(--apple-white);
}

/* 公司信息 */
.company-info {
  margin-top: 16px;
  padding: 14px 16px;
  background: var(--apple-gray-1);
  border-radius: var(--apple-radius-sm);
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--apple-gray-5);
  margin-bottom: 4px;
}

.info-item:last-child {
  margin-bottom: 0;
}

.info-icon {
  flex-shrink: 0;
  font-size: 14px;
}

/* ---------- 版式选择（胶囊按钮） ---------- */
.layout-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.layout-chip {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 0;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--apple-gray-5);
  background: var(--apple-gray-1);
  cursor: pointer;
  transition: var(--apple-transition);
  border: 1.5px solid transparent;
  text-align: center;
}

.layout-chip input {
  display: none;
}

.layout-chip:hover {
  background: var(--apple-gray-2);
}

.layout-chip.active {
  background: var(--apple-blue);
  color: #fff;
  border-color: var(--apple-blue);
}

/* ---------- 模板选择 ---------- */
.template-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.template-option {
  position: relative;
  border-radius: var(--apple-radius-xs);
  cursor: pointer;
  transition: var(--apple-transition);
  text-align: center;
  overflow: hidden;
  border: 2px solid transparent;
  background: var(--apple-gray-1);
  padding: 6px 4px 5px;
}

.template-option:hover {
  transform: scale(1.04);
  box-shadow: var(--apple-shadow-md);
}

.template-option.active {
  border-color: var(--apple-blue);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
}

.template-option.active::after {
  content: "✓";
  position: absolute;
  top: 4px;
  right: 4px;
  width: 16px;
  height: 16px;
  background: var(--apple-blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
}

.template-color-block {
  width: 100%;
  height: 28px;
  border-radius: 5px;
  margin-bottom: 4px;
}

.template-option .template-name {
  font-size: 10px;
  font-weight: 600;
  color: var(--apple-gray-5);
  line-height: 1.2;
}

/* ---------- 表单网格 ---------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 20px;
}

.form-field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--apple-gray-4);
  margin-bottom: 5px;
  letter-spacing: 0.2px;
}

.req {
  color: #ff3b30;
}

.form-field input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--apple-gray-2);
  border-radius: var(--apple-radius-xs);
  font-size: 15px;
  font-family: var(--apple-font);
  color: var(--apple-gray-6);
  background: var(--apple-gray-1);
  outline: none;
  transition: var(--apple-transition);
}

.form-field input:hover {
  border-color: var(--apple-gray-3);
}

.form-field input:focus {
  border-color: var(--apple-blue);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.12);
  background: var(--apple-white);
}

.form-field input::placeholder {
  color: var(--apple-gray-3);
  font-weight: 400;
}

/* ---------- 头像上传 ---------- */
.avatar-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 0.5px solid var(--apple-gray-2);
}

.avatar-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--apple-gray-1);
  border: 1.5px dashed var(--apple-gray-3);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  transition: var(--apple-transition);
}

.avatar-circle:hover {
  border-color: var(--apple-blue);
}

.avatar-circle img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-placeholder {
  font-size: 22px;
  opacity: 0.35;
}

.avatar-info {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.avatar-hint {
  font-size: 12px;
  color: var(--apple-gray-4);
}

/* ---------- 苹果风格按钮 ---------- */
.apple-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 500;
  font-family: var(--apple-font);
  cursor: pointer;
  transition: var(--apple-transition);
  text-decoration: none;
  letter-spacing: -0.1px;
  user-select: none;
}

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

.apple-btn-primary {
  background: var(--apple-blue);
  color: #fff;
}

.apple-btn-primary:hover {
  background: var(--apple-blue-hover);
}

.apple-btn-secondary {
  background: var(--apple-gray-1);
  color: var(--apple-blue);
  border: 1px solid var(--apple-gray-2);
}

.apple-btn-secondary:hover {
  background: var(--apple-gray-2);
}

.apple-btn-text {
  background: transparent;
  color: #ff3b30;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--apple-font);
  cursor: pointer;
  border: none;
  padding: 4px 8px;
}

.apple-btn-text:hover {
  opacity: 0.7;
}

.apple-btn-sm {
  padding: 7px 16px;
  font-size: 13px;
}

.apple-btn-lg {
  padding: 16px 32px;
  font-size: 17px;
  font-weight: 600;
  min-width: 240px;
}

/* ============================================
   名片预览区域（页面底部）
   ============================================ */
.preview-area {
  padding: 60px 22px 40px;
  background: linear-gradient(180deg, var(--apple-bg) 0%, var(--apple-gray-1) 100%);
}

.preview-inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--apple-gray-6);
  margin-bottom: 6px;
}

.section-desc {
  font-size: 17px;
  color: var(--apple-gray-4);
  margin-bottom: 40px;
}

/* 名片展示区 */
.cards-showcase {
  display: flex;
  gap: 32px;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.showcase-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.showcase-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--apple-gray-4);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.showcase-card-wrap {
  background: var(--apple-white);
  padding: 24px;
  border-radius: var(--apple-radius);
  box-shadow: var(--apple-shadow-lg);
  transition: var(--apple-transition);
}

.showcase-card-wrap:hover {
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12);
  transform: translateY(-4px);
}

/* 导出按钮区 */
.export-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.export-sub {
  display: flex;
  gap: 12px;
}

/* ============================================
   名片预览容器
   ============================================ */
.card-preview-container {
  display: none;
  justify-content: center;
  align-items: center;
}

.card-preview-container.active {
  display: flex;
}

/* ============================================
   名片样式 - 核心部分
   ============================================ */
.business-card {
  background: #1b365d;
  color: #ffffff;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  font-family: 'Noto Sans SC', 'Inter', sans-serif;
}

.business-card.horizontal {
  width: var(--card-h-width);
  height: var(--card-h-height);
}

.business-card.vertical {
  width: var(--card-v-width);
  height: var(--card-v-height);
}

.card-content {
  width: 100%;
  height: 100%;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.business-card.vertical .card-content {
  padding: 32px 24px;
  justify-content: flex-start;
  gap: 16px;
}

/* Logo 区 */
.card-logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.business-card.vertical .card-logo-area {
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 12px;
}

.card-logo {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.card-logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.logo-placeholder {
  font-size: 10px;
  font-weight: 700;
  opacity: 0.5;
  letter-spacing: 1px;
  border: 1.5px dashed currentColor;
  padding: 4px 6px;
  border-radius: 4px;
}

.card-company-name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  opacity: 0.9;
}

.business-card.vertical .card-company-name {
  font-size: 13px;
}

/* 个人信息 */
.card-info-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.business-card.vertical .card-info-area {
  justify-content: flex-start;
  text-align: center;
}

.card-person-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 2px;
}

.business-card.vertical .card-person-name {
  font-size: 20px;
}

.card-person-title {
  font-size: 12px;
  opacity: 0.75;
  margin-bottom: 10px;
}

.card-dept-text::before { content: " | "; }
.card-dept-text:empty::before { content: ""; }

.card-divider {
  width: 40px;
  height: 2px;
  background: currentColor;
  opacity: 0.4;
  margin-bottom: 10px;
  border-radius: 1px;
}

.business-card.vertical .card-divider {
  margin-left: auto;
  margin-right: auto;
}

/* 联系方式 */
.card-contact-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.business-card.vertical .card-contact-list {
  align-items: flex-start;
  text-align: left;
  padding: 0 4px;
}

.card-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10.5px;
  opacity: 0.85;
}

.contact-icon {
  font-size: 11px;
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}

.contact-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-contact-address .contact-text {
  white-space: normal;
  line-height: 1.4;
  font-size: 9.5px;
}

/* 姓名行 */
.card-name-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.business-card.vertical .card-name-row {
  flex-direction: column;
  align-items: center;
}

.card-name-block { flex: 1; }

.business-card.vertical .card-name-block {
  text-align: center;
}

/* 头像 */
.card-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255,255,255,0.3);
  flex-shrink: 0;
  display: none;
}

.card-avatar.show { display: block; }

.card-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.business-card.theme-modern .card-avatar,
.business-card.theme-china-red .card-avatar {
  border-color: rgba(0,0,0,0.1);
}

/* ============================================
   名片模板主题
   ============================================ */

/* 经典商务 */
.business-card.theme-classic {
  background: #1b365d; color: #fff;
}
.business-card.theme-classic .card-divider { background: #c9a84c; opacity: 1; }
.business-card.theme-classic .card-person-title { color: #b8cce4; }

/* 清新现代 */
.business-card.theme-modern {
  background: #ffffff; color: #2d3748;
}
.business-card.theme-modern .card-divider { background: #38b2ac; opacity: 1; }
.business-card.theme-modern .card-person-title { color: #718096; }
.business-card.theme-modern .card-contact-item { color: #4a5568; }
.business-card.theme-modern .logo-placeholder { color: #718096; border-color: #718096; }

/* 极简黑金 */
.business-card.theme-dark-gold {
  background: #1a1a2e; color: #d4af37;
}
.business-card.theme-dark-gold .card-divider { background: #d4af37; opacity: 0.6; }
.business-card.theme-dark-gold .card-person-title,
.business-card.theme-dark-gold .card-contact-item { color: #c0c0c0; }
.business-card.theme-dark-gold .card-company-name { color: #d4af37; }

/* 科技蓝 */
.business-card.theme-tech-blue {
  background: linear-gradient(135deg, #0077b6, #00b4d8); color: #fff;
}
.business-card.theme-tech-blue .card-divider { background: #90e0ef; opacity: 0.8; }
.business-card.theme-tech-blue .card-person-title { color: #caf0f8; }

/* 中国红 */
.business-card.theme-china-red {
  background: #ffffff; color: #1a1a1a; border: 1.5px solid #c53030;
}
.business-card.theme-china-red .card-divider { background: #c53030; opacity: 1; }
.business-card.theme-china-red .card-company-name { color: #c53030; }
.business-card.theme-china-red .card-person-title { color: #666666; }
.business-card.theme-china-red .card-contact-item { color: #444444; }
.business-card.theme-china-red .logo-placeholder { color: #c53030; border-color: #c53030; }
.business-card.theme-china-red::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: #c53030;
}
.business-card.theme-china-red::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 4px; background: #c53030;
}

/* 电路板 */
.business-card.theme-circuit {
  background: #0a5e2a url('../assets/backgrounds/circuit.svg') center/cover; color: #fff;
}
.business-card.theme-circuit .card-content { position: relative; z-index: 1; }
.business-card.theme-circuit .card-divider { background: #34d399; opacity: 1; }
.business-card.theme-circuit .card-person-title { color: #a7f3d0; }
.business-card.theme-circuit .card-contact-item { color: #d1fae5; }
.business-card.theme-circuit .card-company-name { color: #6ee7b7; }

/* 星空科技 */
.business-card.theme-starfield {
  background: #0a0a1a url('../assets/backgrounds/starfield.svg') center/cover; color: #fff;
}
.business-card.theme-starfield .card-content { position: relative; z-index: 1; }
.business-card.theme-starfield .card-divider { background: #6366f1; opacity: 1; }
.business-card.theme-starfield .card-person-title { color: #a5b4fc; }
.business-card.theme-starfield .card-contact-item { color: #c7d2fe; }
.business-card.theme-starfield .card-company-name { color: #818cf8; }
.business-card.theme-starfield .card-person-name { text-shadow: 0 0 20px rgba(99, 102, 241, 0.3); }

/* 几何蓝白 */
.business-card.theme-geometric {
  background: #f8fafc url('../assets/backgrounds/geometric.svg') center/cover; color: #1e293b;
}
.business-card.theme-geometric .card-content { position: relative; z-index: 1; }
.business-card.theme-geometric .card-divider { background: #3b82f6; opacity: 1; }
.business-card.theme-geometric .card-person-title { color: #475569; }
.business-card.theme-geometric .card-contact-item { color: #334155; }
.business-card.theme-geometric .card-company-name { color: #1e40af; }
.business-card.theme-geometric .logo-placeholder { color: #3b82f6; border-color: #3b82f6; }
.business-card.theme-geometric .card-avatar { border-color: rgba(59, 130, 246, 0.3); }

/* 紫韵波纹 */
.business-card.theme-wave {
  background: #4338ca url('../assets/backgrounds/wave.svg') center/cover; color: #fff;
}
.business-card.theme-wave .card-content { position: relative; z-index: 1; }
.business-card.theme-wave .card-divider { background: #a5b4fc; opacity: 0.8; }
.business-card.theme-wave .card-person-title { color: #c7d2fe; }
.business-card.theme-wave .card-contact-item { color: #e0e7ff; }
.business-card.theme-wave .card-company-name { color: #c7d2fe; }

/* ============================================
   头像裁剪弹窗
   ============================================ */
.crop-modal {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  z-index: 10000;
  display: flex; align-items: center; justify-content: center;
}

.crop-modal-overlay {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.crop-modal-dialog {
  position: relative;
  background: var(--apple-white);
  border-radius: var(--apple-radius);
  padding: 32px;
  box-shadow: var(--apple-shadow-lg);
  text-align: center;
  max-width: 360px;
  width: 90%;
  animation: modalIn 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

.crop-modal-dialog h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--apple-gray-6);
}

.crop-hint {
  font-size: 13px;
  color: var(--apple-gray-4);
  margin-bottom: 24px;
}

.crop-area {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.crop-circle {
  width: 200px; height: 200px;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
  border: 3px solid var(--apple-blue);
  background: var(--apple-gray-1);
  cursor: grab;
  touch-action: none;
}

.crop-circle:active { cursor: grabbing; }

.crop-circle img {
  position: absolute; left: 0; top: 0;
  pointer-events: none; user-select: none;
  -webkit-user-drag: none;
}

.crop-zoom {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 24px; justify-content: center;
}

.crop-zoom-label {
  font-size: 16px; font-weight: 500;
  color: var(--apple-gray-4);
}

.crop-zoom input[type="range"] {
  flex: 1; max-width: 180px;
  accent-color: var(--apple-blue);
}

.crop-actions {
  display: flex; gap: 12px; justify-content: center;
}

.crop-actions .apple-btn {
  min-width: 100px;
}

/* ============================================
   加载提示
   ============================================ */
.export-loading {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
}

.loading-content {
  background: var(--apple-white);
  padding: 36px 48px;
  border-radius: var(--apple-radius);
  text-align: center;
  box-shadow: var(--apple-shadow-lg);
}

.loading-spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--apple-gray-2);
  border-top-color: var(--apple-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

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

.loading-content p {
  font-size: 15px;
  color: var(--apple-gray-5);
  font-weight: 500;
}

/* ---------- 工具类 ---------- */
.hidden {
  display: none !important;
}

/* ---------- 底部 ---------- */
.site-footer {
  text-align: center;
  padding: 24px;
  color: var(--apple-gray-4);
  font-size: 12px;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 980px) {
  .editor-grid-top {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 32px;
  }

  .cards-showcase {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 36px 16px 0;
  }

  .hero-title {
    font-size: 26px;
  }

  .hero-subtitle {
    font-size: 15px;
  }

  .editor-area {
    padding: 24px 12px 0;
  }

  .card-block {
    padding: 20px;
  }

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

  .preview-area {
    padding: 36px 12px 24px;
  }

  .section-title {
    font-size: 24px;
  }

  .showcase-card-wrap {
    padding: 16px;
    overflow-x: auto;
  }

  .business-card.horizontal {
    transform: scale(0.55);
    transform-origin: center center;
  }

  .business-card.vertical {
    transform: scale(0.65);
    transform-origin: center center;
  }

  .export-sub {
    flex-direction: column;
    width: 100%;
  }

  .export-sub .apple-btn {
    width: 100%;
  }

  .apple-btn-lg {
    width: 100%;
    min-width: auto;
  }
}

/* ============================================
   打印
   ============================================ */
@media print {
  .nav-bar, .hero, .editor-area, .export-bar, .site-footer {
    display: none;
  }
}