/* ==========================================================================
   精选邀请推荐导航 - 风格样式表 (Inspired by litiancai.vercel.app)
   ========================================================================== */

:root {
  --color-paper: #f6f5f3;
  --color-surface: #ffffff;
  --color-surface-trans: rgba(255, 255, 255, 0.88);
  --color-ink: #1c1c1e;
  --color-muted: #52525b;
  --color-muted-light: #71717a;
  --color-line: rgba(28, 28, 30, 0.10);
  --color-line-hover: rgba(28, 28, 30, 0.28);
  --color-accent: #1f6b45;
  --color-rebate: #e4f5a4;
  --color-rebate-text: #1c1c1e;
  
  --radius-card: 20px;
  --radius-pill: 9999px;
  
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.02);
  --shadow-raised: 0 12px 28px -6px rgba(28, 28, 30, 0.08), 0 4px 12px -2px rgba(28, 28, 30, 0.04);
  --shadow-hover: 0 20px 38px -10px rgba(28, 28, 30, 0.16), 0 8px 16px -4px rgba(28, 28, 30, 0.08);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--color-paper);
  color: var(--color-ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* 背景点阵微网格纹理与柔光弥散斑 */
.grid-texture {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(#1c1c1e0a 1px, transparent 1px),
    linear-gradient(90deg, #1c1c1e0a 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  z-index: 0;
}

.ambient-glow-1 {
  position: fixed;
  top: 10%;
  right: -100px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 240, 74, 0.15) 0%, rgba(200, 203, 209, 0) 70%);
  filter: blur(50px);
  pointer-events: none;
  z-index: 0;
}

.ambient-glow-2 {
  position: fixed;
  bottom: 15%;
  left: -80px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(160, 210, 255, 0.12) 0%, rgba(200, 203, 209, 0) 70%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

/* 顶部导航栏 (Sticky Header) */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background-color: rgba(246, 245, 243, 0.88);
  border-bottom: 1px solid var(--color-line);
  transition: all 0.2s ease;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-ink);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.brand-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-ink);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  box-shadow: 0 2px 6px rgba(0,0,0,0.12);
}

.brand-sub {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--color-muted);
  margin-left: 4px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.pill-link-primary {
  background-color: var(--color-ink);
  color: #ffffff;
}

.pill-link-primary:hover {
  background-color: #000000;
  transform: translateY(-1px);
}

.pill-link-ghost {
  color: var(--color-muted);
  background: transparent;
  border: 1px solid var(--color-line);
}

.pill-link-ghost:hover {
  color: var(--color-ink);
  border-color: var(--color-line-hover);
  background-color: rgba(255, 255, 255, 0.6);
}

/* 主内容区域 */
.main-wrapper {
  position: relative;
  z-index: 10;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 80px;
  flex: 1;
}

/* 顶部 Hero 区域 */
.hero {
  margin-bottom: 28px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background-color: rgba(28, 28, 30, 0.05);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.hero-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-ink);
  line-height: 1.25;
  margin-bottom: 10px;
}

.hero-title span {
  background: linear-gradient(135deg, #1c1c1e 30%, #52525b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--color-muted);
  max-width: 680px;
  line-height: 1.6;
}

/* 免责/经验提示条 (Notice Banner) */
.notice-box {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 14px;
  padding: 12px 18px;
  font-size: 0.88rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 32px;
  box-shadow: var(--shadow-subtle);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

/* 工具栏：分类筛选与搜索框 */
.toolbar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}

@media (min-width: 768px) {
  .toolbar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.category-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.category-tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 600;
  border: 1px solid var(--color-line);
  background-color: var(--color-surface);
  color: var(--color-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  user-select: none;
}

.tab-btn:hover {
  border-color: var(--color-line-hover);
  color: var(--color-ink);
  background-color: #ffffff;
}

.tab-btn.active {
  background-color: var(--color-ink);
  border-color: var(--color-ink);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.tab-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 1px 6px;
  border-radius: var(--radius-pill);
  background-color: rgba(28, 28, 30, 0.07);
  color: var(--color-muted);
  font-weight: 700;
}

.tab-btn.active .tab-count {
  background-color: rgba(255, 255, 255, 0.22);
  color: #ffffff;
}

/* 搜索框 */
.search-box {
  position: relative;
  min-width: 240px;
}

.search-input {
  width: 100%;
  padding: 9px 14px 9px 36px;
  font-size: 0.88rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-line);
  background-color: var(--color-surface);
  color: var(--color-ink);
  outline: none;
  transition: all 0.2s ease;
}

.search-input:focus {
  border-color: var(--color-ink);
  box-shadow: 0 0 0 3px rgba(28, 28, 30, 0.08);
  background-color: #ffffff;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: var(--color-muted-light);
  pointer-events: none;
}

/* 卡片网格 (Card Grid) */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 680px) {
  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1060px) {
  .cards-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 单张卡片组件 (Referral Card Panel) */
.card-item {
  position: relative;
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.25s ease;
}

.card-item:hover {
  transform: translateY(-4px);
  border-color: var(--color-line-hover);
  box-shadow: var(--shadow-hover);
}

/* 卡片上方拟物化卡面视效区 (Card Visual Stage) */
.card-banner {
  position: relative;
  height: 160px;
  padding: 16px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #121316;
}

/* 拟真银行卡片模型 (Mockup Card) */
.mockup-card {
  width: 220px;
  height: 125px;
  border-radius: 12px;
  padding: 12px 14px;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
  transform: rotate(-3deg) scale(0.96);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.card-item:hover .mockup-card {
  transform: rotate(-1deg) scale(1.02);
}

/* 卡片反光光泽 */
.mockup-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.22) 0%, transparent 60%);
  pointer-events: none;
}

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  text-transform: uppercase;
  font-family: var(--font-mono);
  opacity: 0.9;
  z-index: 1;
}

.mockup-chip {
  width: 28px;
  height: 20px;
  border-radius: 4px;
  background: linear-gradient(135deg, #e6c875 0%, #d4af37 60%, #aa820a 100%);
  border: 1px solid rgba(0, 0, 0, 0.25);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.4);
  position: relative;
  margin-top: 4px;
  z-index: 1;
}

.mockup-chip::after {
  content: "";
  position: absolute;
  inset: 2px 4px;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 2px;
}

.mockup-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  z-index: 1;
}

.mockup-card-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
  max-width: 140px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mockup-logo-icon {
  font-size: 1.25rem;
}

/* 卡片内容区域 (Card Content) */
.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 12px;
}

/* 分类与状态小标头 */
.card-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.76rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.card-category-label {
  color: var(--color-muted-light);
  font-weight: 600;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 700;
}

.badge-hot {
  background-color: var(--color-rebate);
  color: var(--color-rebate-text);
}

.badge-brand {
  background-color: var(--color-ink);
  color: #ffffff;
}

.badge-default {
  background-color: rgba(28, 28, 30, 0.06);
  color: var(--color-muted);
}

/* 标题与副标题 */
.card-header-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.3;
}

.card-header-sub {
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-top: 2px;
}

/* 核心一句话 */
.card-tagline {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.45;
}

/* 特性标签栏 (Tags) */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.card-tag {
  font-size: 0.74rem;
  padding: 2px 8px;
  border-radius: 6px;
  background-color: rgba(28, 28, 30, 0.04);
  color: var(--color-muted);
  font-weight: 500;
}

/* 奖励返现高亮条 (Bonus Banner) */
.card-bonus-banner {
  background-color: rgba(228, 245, 164, 0.35);
  border: 1px dashed rgba(160, 200, 30, 0.4);
  border-radius: 8px;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #274005;
}

.bonus-icon {
  font-size: 0.95rem;
  flex-shrink: 0;
}

/* 详细介绍折叠/摘要 */
.card-desc {
  font-size: 0.82rem;
  color: var(--color-muted);
  line-height: 1.55;
  background-color: rgba(28, 28, 30, 0.02);
  border-radius: 8px;
  padding: 10px 12px;
  border: 1px solid rgba(28, 28, 30, 0.04);
}

.card-tips {
  font-size: 0.75rem;
  color: var(--color-muted-light);
  margin-top: 6px;
  line-height: 1.4;
}

/* 邀请码区域与操作栏 (Footer Actions) */
.card-actions-wrapper {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--color-line);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 邀请码复制条 */
.referral-code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: rgba(28, 28, 30, 0.04);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 5px 10px;
}

.code-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--color-muted);
}

.code-value {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-ink);
  font-size: 0.84rem;
}

.copy-btn {
  background-color: #ffffff;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.copy-btn:hover {
  background-color: var(--color-ink);
  color: #ffffff;
  border-color: var(--color-ink);
}

.copy-btn.copied {
  background-color: #10b981;
  color: #ffffff;
  border-color: #10b981;
}

/* 直达申请大按钮 (Apply Button) */
.apply-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  background-color: var(--color-ink);
  color: #ffffff;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06);
}

.apply-btn:hover {
  background-color: #000000;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transform: translateY(-1px);
}

.apply-btn-disabled {
  background-color: rgba(28, 28, 30, 0.12);
  color: var(--color-muted-light);
  cursor: not-allowed;
  box-shadow: none;
}

.apply-btn-disabled:hover {
  background-color: rgba(28, 28, 30, 0.12);
  transform: none;
  box-shadow: none;
}

/* 空状态 (Empty State) */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background-color: var(--color-surface);
  border: 1px dashed var(--color-line);
  border-radius: var(--radius-card);
}

.empty-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.empty-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.empty-desc {
  font-size: 0.88rem;
  color: var(--color-muted);
}

/* 底部 Footer */
.footer {
  position: relative;
  z-index: 10;
  border-top: 1px solid var(--color-line);
  background-color: var(--color-surface-trans);
  backdrop-filter: blur(8px);
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

@media (min-width: 680px) {
  .footer-container {
    flex-direction: row;
  }
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--color-muted);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.footer-link {
  font-size: 0.82rem;
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--color-ink);
  text-decoration: underline;
}

/* 全局 Toast 提示条 */
.toast-notice {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--color-ink);
  color: #ffffff;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-notice.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}