/* ============================================
   巴西小子微博存档 - Stylesheet
   Inspired by keepmins.com
   ============================================ */

:root {
  --bg: #f0f0f3;
  --bg-card: #ffffff;
  --bg-hover: #f7f7f9;
  --bg-code: #f5f5f7;
  --text: #1a1a2e;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border: #e5e7eb;
  --border-light: #f0f0f3;
  --accent: #3b82f6;
  --accent-light: #dbeafe;
  --accent-dark: #2563eb;
  --green: #10b981;
  --green-light: #d1fae5;
  --orange: #f59e0b;
  --orange-light: #fef3c7;
  --red: #ef4444;
  --red-light: #fee2e2;
  --purple: #8b5cf6;
  --purple-light: #ede9fe;
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.04);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --max-width: 680px;
  --transition: all 0.2s ease;
}

[data-theme="dark"] {
  --bg: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-hover: #222240;
  --bg-code: #16162a;
  --text: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --border: #2a2a40;
  --border-light: #1e1e30;
  --accent: #60a5fa;
  --accent-light: #1e3a5f;
  --accent-dark: #3b82f6;
  --green-light: #0f3d2e;
  --orange-light: #3d2f0f;
  --red-light: #3d1f1f;
  --purple-light: #2a1f3d;
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.2);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -1px rgba(0,0,0,0.2);
  --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.4), 0 4px 6px -2px rgba(0,0,0,0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.3s ease, color 0.3s ease;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-dark);
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s ease;
}

[data-theme="dark"] .header {
  background: rgba(26,26,46,0.85);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  flex-shrink: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition);
}

.icon-btn:hover {
  background: var(--bg-hover);
  color: var(--text);
}

/* ===== Search ===== */
.search-wrap {
  position: relative;
  flex: 1;
  max-width: 200px;
}

.search-input {
  width: 100%;
  padding: 7px 12px 7px 34px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-card);
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

/* ===== Hero ===== */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 20px 32px;
  text-align: center;
}

.hero-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: white;
  font-weight: 700;
  box-shadow: var(--shadow-lg);
}

.hero h1 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
}

.hero-stat-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.hero-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ===== Filter Bar ===== */
.filter-bar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-chip {
  padding: 5px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.filter-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-chip.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.filter-chip .count {
  font-size: 11px;
  opacity: 0.7;
  margin-left: 4px;
}

.filter-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 4px;
}

/* ===== Timeline ===== */
.timeline {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 60px;
}

.timeline-line {
  position: relative;
}

.timeline-line::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

/* ===== Post Card ===== */
.post {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  margin-left: 48px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  animation: fadeInUp 0.4s ease;
}

.post:hover {
  box-shadow: var(--shadow);
}

.post::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 3px solid var(--accent);
  z-index: 1;
}

.post.has-image::before {
  border-color: var(--green);
}

.post.has-repost::before {
  border-color: var(--purple);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--text-muted);
}

.post-date {
  font-weight: 600;
  color: var(--text-secondary);
}

.post-badge {
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
}

.post-badge.image {
  background: var(--green-light);
  color: var(--green);
}

.post-badge.repost {
  background: var(--purple-light);
  color: var(--purple);
}

.post-content {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  word-break: break-word;
}

.post-content .tag {
  color: var(--accent);
  font-weight: 500;
}

/* ===== Repost Block ===== */
.repost-block {
  margin-top: 12px;
  padding: 14px 16px;
  background: var(--bg-hover);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--purple);
}

.repost-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  font-size: 13px;
}

.repost-author {
  font-weight: 600;
  color: var(--purple);
}

.repost-icon {
  font-size: 12px;
  color: var(--text-muted);
}

.repost-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.own-comment {
  margin-bottom: 8px;
  font-size: 15px;
  color: var(--text);
  line-height: 1.8;
  word-break: break-word;
}

/* ===== Images ===== */
.post-images {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.post-images.count-1 {
  grid-template-columns: 1fr;
  max-width: 400px;
}

.post-images.count-2 {
  grid-template-columns: 1fr 1fr;
}

.post-images.count-3,
.post-images.count-4 {
  grid-template-columns: 1fr 1fr;
}

.post-images.count-5,
.post-images.count-6 {
  grid-template-columns: 1fr 1fr 1fr;
}

.post-image {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-hover);
  aspect-ratio: 4/3;
}

.post-images.count-1 .post-image {
  aspect-ratio: auto;
}

.post-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.post-image:hover img {
  transform: scale(1.05);
}

/* ===== Tags ===== */
.post-tags {
  margin-top: 10px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.post-tag {
  padding: 2px 10px;
  border-radius: 12px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
}

.post-tag:hover {
  background: var(--accent);
  color: white;
}

/* ===== Month Divider ===== */
.month-divider {
  position: relative;
  margin-left: 48px;
  margin-bottom: 20px;
  margin-top: 8px;
  padding: 8px 0;
}

.month-divider::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 50%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  transform: translateY(-50%);
  z-index: 1;
}

.month-divider-text {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-card);
  display: inline-block;
  padding: 4px 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.month-divider-count {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: 8px;
}

/* ===== Pagination ===== */
.pagination {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.page-btn {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

.page-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.page-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-info {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 8px;
}

/* ===== Loading ===== */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 14px;
}

.loading-spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 8px;
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.3;
}

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

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.9);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 8px;
  box-shadow: 0 0 40px rgba(0,0,0,0.5);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: none;
  color: white;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.2);
}

/* ===== Footer ===== */
.footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
}

.footer p {
  margin-bottom: 4px;
}

.footer a {
  color: var(--text-secondary);
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 50;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ===== View Toggle ===== */
.view-toggle {
  display: flex;
  gap: 4px;
  background: var(--bg-hover);
  border-radius: 20px;
  padding: 3px;
}

.view-toggle-btn {
  padding: 5px 14px;
  border-radius: 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}

.view-toggle-btn.active {
  background: var(--bg-card);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

/* ===== Gallery View ===== */
.gallery {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px 60px;
  columns: 3;
  column-gap: 12px;
}

@media (max-width: 768px) {
  .gallery {
    columns: 2;
  }
}

@media (max-width: 480px) {
  .gallery {
    columns: 1;
  }
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  background: var(--bg-hover);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.gallery-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.gallery-item img {
  width: 100%;
  display: block;
}

.gallery-item-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: white;
  font-size: 13px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.gallery-item-date {
  font-size: 11px;
  opacity: 0.8;
}

/* ===== Stats View ===== */
.stats-view {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 60px;
}

.stats-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.stats-card h3 {
  font-size: 16px;
  margin-bottom: 16px;
  color: var(--text);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

.stat-item {
  text-align: center;
  padding: 16px;
  background: var(--bg-hover);
  border-radius: var(--radius-sm);
}

.stat-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.stats-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 120px;
  margin-top: 12px;
}

.stats-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--accent), var(--accent-light));
  border-radius: 4px 4px 0 0;
  min-height: 4px;
  position: relative;
  cursor: pointer;
  transition: var(--transition);
}

.stats-bar:hover {
  opacity: 0.8;
}

.stats-bar-label {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%) rotate(-45deg);
  font-size: 9px;
  color: var(--text-muted);
  white-space: nowrap;
}

.stats-bar-count {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  color: var(--text-secondary);
  font-weight: 600;
}

/* ===== Month Selector Dropdown ===== */
.month-dropdown {
  position: relative;
}

.month-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  max-height: 320px;
  overflow-y: auto;
  min-width: 180px;
  z-index: 50;
  display: none;
}

.month-dropdown-menu.open {
  display: block;
}

.month-dropdown-item {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
}

.month-dropdown-item:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.month-dropdown-item.active {
  background: var(--accent-light);
  color: var(--accent);
}

.month-dropdown-item .count {
  font-size: 11px;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .hero {
    padding: 32px 20px 24px;
  }

  .hero h1 {
    font-size: 22px;
  }

  .hero-stats {
    gap: 20px;
  }

  .hero-stat-num {
    font-size: 20px;
  }

  .post {
    margin-left: 36px;
    padding: 16px 18px;
  }

  .post::before {
    left: -28px;
  }

  .timeline-line::before {
    left: 16px;
  }

  .month-divider {
    margin-left: 36px;
  }

  .month-divider::before {
    left: -28px;
  }

  .search-wrap {
    max-width: none;
    flex: 0 1 auto;
  }

  .search-input {
    width: 120px;
  }

  .filter-bar {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .post-images.count-3,
  .post-images.count-4,
  .post-images.count-5,
  .post-images.count-6 {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Selection */
::selection {
  background: var(--accent-light);
  color: var(--accent-dark);
}