/* Android 12 Material Design 3 - 三中万能墙 */
/* 基于真实控制面板源码重构 */

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

:root {
  --bg: #FEF7FF;
  --surface: #F3EDF7;
  --surface-variant: #E7E0EC;
  --primary: #6750A4;
  --on-primary: #FFFFFF;
  --primary-container: #EADDFF;
  --on-primary-container: #21005D;
  --secondary: #625B71;
  --on-secondary: #FFFFFF;
  --secondary-container: #E8DEF8;
  --on-secondary-container: #1D192B;
  --tertiary: #7D5260;
  --on-tertiary: #FFFFFF;
  --tertiary-container: #FFD8E4;
  --on-tertiary-container: #31111D;
  --error: #B3261E;
  --on-error: #FFFFFF;
  --error-container: #F9DEDC;
  --on-error-container: #410E0B;
  --outline: #79747E;
  --outline-variant: #CAC4D0;
  --on-surface: #1C1B1F;
  --on-surface-variant: #49454F;
  --shadow: rgba(0,0,0,0.08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.dark_theme {
  --bg: #141218;
  --surface: #211F26;
  --surface-variant: #36343B;
  --primary: #D0BCFF;
  --on-primary: #381E72;
  --primary-container: #4F378B;
  --on-primary-container: #EADDFF;
  --secondary: #CCC2DC;
  --on-secondary: #332D41;
  --secondary-container: #4A4458;
  --on-secondary-container: #E8DEF8;
  --tertiary: #EFB8C8;
  --on-tertiary: #492532;
  --tertiary-container: #633B48;
  --on-tertiary-container: #FFD8E4;
  --error: #F2B8B5;
  --on-error: #601410;
  --error-container: #8C1D18;
  --on-error-container: #F9DEDC;
  --outline: #938F99;
  --outline-variant: #49454F;
  --on-surface: #E6E1E5;
  --on-surface-variant: #CAC4D0;
  --shadow: rgba(0,0,0,0.3);
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--on-surface);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 80px;
  transition: background-color 0.3s, color 0.3s;
}

/* ========== App Bar ========== */
.app-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(254, 247, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--outline-variant);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 1000;
  transition: all 0.3s;
}

.dark_theme .app-bar {
  background: rgba(20, 18, 24, 0.92);
  border-bottom-color: var(--surface-variant);
}

.app-bar-title {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--on-surface);
  text-decoration: none;
  letter-spacing: 0.0125em;
}

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

/* ========== Chips ========== */
.chip {
  flex-shrink: 0;
  height: 40px;
  line-height: 40px;
  padding: 0 16px;
  border-radius: 20px;
  background: var(--surface);
  color: var(--on-surface-variant);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  border: none;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background-color 0.2s, color 0.2s, border-radius 0.2s, transform 0.15s;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  font-family: var(--font);
}

.chip:hover {
  background: var(--surface-variant);
  color: var(--on-surface);
}

.chip:active {
  transform: scale(0.96);
  border-radius: 12px;
}

.chip.active {
  background: var(--primary);
  color: var(--on-primary);
}

/* ========== Tiles (Android 12 QS风格) ========== */
.tile {
  min-height: 72px;
  border-radius: 24px;
  background: var(--surface);
  color: var(--on-surface-variant);
  padding: 12px 16px;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
  font-size: 14px;
  transition: background-color 0.3s, color 0.3s, border-radius 0.3s, transform 0.15s, box-shadow 0.3s;
  will-change: transform;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  border: none;
  flex: 1;
  box-shadow: 0 1px 2px var(--shadow);
  font-family: var(--font);
}

.tile:hover {
  background: var(--surface-variant);
  box-shadow: 0 2px 4px var(--shadow);
}

.tile:active {
  transform: scale(0.97);
  border-radius: 16px;
}

.tile.active {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 2px 8px rgba(103, 80, 164, 0.3);
}

.dark_theme .tile.active {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 2px 8px rgba(208, 188, 255, 0.2);
}

.tile .tile-icon {
  font-size: 20px;
  margin-bottom: 4px;
  line-height: 1;
}

.tile .tile-label {
  font-size: 14px;
  line-height: 1.2;
  font-weight: 500;
}

.tile.wide {
  flex: 2;
}

/* ========== Content Cards ========== */
.card {
  background: var(--surface);
  border-radius: 24px;
  padding: 20px;
  margin-bottom: 8px;
  box-shadow: 0 1px 3px var(--shadow);
  transition: transform 0.2s, box-shadow 0.3s, background-color 0.3s, border-radius 0.3s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
  text-decoration: none;
  color: inherit;
  display: block;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow);
  border-color: var(--outline-variant);
}

.card:active {
  transform: scale(0.99);
  border-radius: 16px;
}

.card-title {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--on-surface);
  margin-bottom: 4px;
  line-height: 1.4;
}

.card-date {
  font-size: 12px;
  color: var(--on-surface-variant);
  margin-bottom: 12px;
}

.card-excerpt {
  color: var(--on-surface-variant);
  font-size: 14px;
  line-height: 1.5;
}

.card-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 16px;
  gap: 8px;
}

/* ========== Groups ========== */
.group {
  display: flex;
  gap: 8px;
  width: 100%;
  margin-bottom: 8px;
}

/* ========== Hero ========== */
.hero {
  background: var(--surface);
  color: var(--on-surface);
  padding: 100px 16px 60px;
  text-align: center;
  margin-top: 64px;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 12px;
  color: var(--on-surface);
}

.hero-subtitle {
  font-size: 1.125rem;
  font-weight: 400;
  opacity: 0.7;
  max-width: 560px;
  margin: 0 auto;
  color: var(--on-surface-variant);
}

/* ========== Main ========== */
.main {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px;
}

/* ========== Post Detail ========== */
.post-detail {
  background: var(--surface);
  border-radius: 24px;
  padding: 24px;
  margin-top: 80px;
  box-shadow: 0 1px 3px var(--shadow);
}

.post-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--outline-variant);
}

.post-title {
  font-size: 1.75rem;
  font-weight: 400;
  color: var(--on-surface);
  line-height: 1.3;
  margin-bottom: 8px;
}

.post-meta {
  color: var(--on-surface-variant);
  font-size: 14px;
}

.post-body {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--on-surface);
}

.post-body img,
.post-body video {
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  display: block;
  margin: 16px auto;
  box-shadow: 0 2px 8px var(--shadow);
}

.post-body audio {
  width: 100%;
  max-width: 400px;
  display: block;
  margin: 16px auto;
}

/* ========== Stats ========== */
.stats {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface-variant);
  border-radius: 24px;
  margin: 16px 0;
  width: fit-content;
  font-size: 14px;
  color: var(--on-surface-variant);
}

/* ========== Comments ========== */
.comment {
  background: var(--surface);
  border-radius: 24px;
  padding: 16px;
  margin-bottom: 8px;
  box-shadow: 0 1px 2px var(--shadow);
  transition: transform 0.2s;
}

.comment:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px var(--shadow);
}

.comment:active {
  transform: scale(0.99);
  border-radius: 16px;
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.comment-author {
  font-weight: 500;
  font-size: 14px;
  color: var(--on-surface);
}

.comment-time {
  font-size: 12px;
  color: var(--on-surface-variant);
}

.comment-content {
  color: var(--on-surface-variant);
  font-size: 14px;
  line-height: 1.5;
}

/* ========== Editor ========== */
.editor-container {
  max-width: 900px;
  margin: 80px auto 16px;
  padding: 0 16px;
}

.editor-card {
  background: var(--surface);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 1px 3px var(--shadow);
}

.toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  padding: 12px;
  background: var(--surface-variant);
  border-radius: 24px;
}

.tool-btn {
  height: 40px;
  padding: 0 16px;
  border-radius: 20px;
  background: var(--surface);
  color: var(--on-surface-variant);
  border: none;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.tool-btn:hover {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.tool-btn:active {
  transform: scale(0.95);
  border-radius: 12px;
}

/* ========== Text Fields ========== */
.field {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--outline);
  border-radius: 4px;
  background: var(--surface);
  color: var(--on-surface);
  font-family: var(--font);
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  margin-bottom: 16px;
}

.field:hover {
  border-color: var(--on-surface);
}

.field:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

textarea.field {
  min-height: 200px;
  resize: vertical;
  line-height: 1.6;
}

/* ========== Upload ========== */
.upload-area {
  border: 2px dashed var(--outline);
  border-radius: 24px;
  padding: 32px;
  text-align: center;
  background: var(--surface-variant);
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 16px;
}

.upload-area:hover {
  border-color: var(--primary);
  background: var(--primary-container);
}

.upload-area.dragover {
  border-color: var(--primary);
  background: var(--primary-container);
  border-style: solid;
}

/* ========== Dialog ========== */
.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 16px;
}

.dialog-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.dialog {
  background: var(--surface);
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  max-width: 400px;
  width: 100%;
  overflow: hidden;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.2, 0, 0, 1);
}

.dialog-overlay.show .dialog {
  transform: scale(1) translateY(0);
}

.dialog-header {
  background: var(--primary);
  color: var(--on-primary);
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dialog-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin: 0;
}

.dialog-close {
  background: none;
  border: none;
  color: var(--on-primary);
  font-size: 24px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s;
}

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

.dialog-body {
  padding: 24px;
  color: var(--on-surface-variant);
  line-height: 1.5;
  font-size: 14px;
}

.dialog-footer {
  padding: 16px 24px 24px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ========== Admin ========== */
.admin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.list-item {
  background: var(--surface);
  border-radius: 24px;
  padding: 16px;
  box-shadow: 0 1px 2px var(--shadow);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform 0.2s, box-shadow 0.3s;
}

.list-item:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 8px var(--shadow);
}

.list-item:active {
  transform: scale(0.99);
  border-radius: 16px;
}

/* ========== Login ========== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 16px;
}

.login-card {
  background: var(--surface);
  border-radius: 24px;
  box-shadow: 0 8px 32px var(--shadow);
  padding: 32px;
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header h2 {
  font-size: 1.75rem;
  font-weight: 400;
  color: var(--on-surface);
  margin-bottom: 8px;
}

.login-header p {
  color: var(--on-surface-variant);
  font-size: 14px;
}

/* ========== Messages ========== */
.msg-error {
  background: var(--error-container);
  color: var(--on-error-container);
  padding: 12px 16px;
  border-radius: 16px;
  margin-bottom: 16px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.msg-success {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  padding: 12px 16px;
  border-radius: 16px;
  margin-bottom: 16px;
  font-size: 14px;
}

/* ========== Footer ========== */
.footer {
  background: var(--surface-variant);
  color: var(--on-surface-variant);
  padding: 24px 16px;
  text-align: center;
  margin-top: 48px;
  font-size: 12px;
  border-top: 1px solid var(--outline-variant);
}

/* ========== Empty ========== */
.empty {
  text-align: center;
  padding: 48px 16px;
  color: var(--on-surface-variant);
}

.empty h2 {
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--on-surface);
  margin-bottom: 8px;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .app-bar { height: 56px; padding: 0 12px; }
  .hero { padding: 80px 16px 48px; margin-top: 56px; }
  .hero-title { font-size: 1.75rem; }
  .hero-subtitle { font-size: 1rem; }
  .main { padding: 12px; }
  .admin-grid { grid-template-columns: 1fr; }
  .post-detail { padding: 16px; margin-top: 72px; }
  .post-title { font-size: 1.5rem; }
  .editor-container { padding: 0 12px; margin-top: 72px; }
  .tile { min-height: 56px; padding: 10px 14px; }
  .tile.wide { flex: 1 1 100%; }
  .group { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .chip { height: 36px; line-height: 36px; padding: 0 12px; font-size: 13px; }
  .hero-title { font-size: 1.5rem; }
  .card { padding: 16px; }
}