:root {
  --bg: #0a0a0a;
  --bg-card: #141414;
  --bg-hover: #1c1c1c;
  --text: #f5f5f5;
  --text-muted: #888;
  --text-dim: #555;
  --accent: #fff;
  --border: #2a2a2a;
  --border-light: #1e1e1e;
  --normal: #666;
  --important: #c9a227;
  --urgent: #e63946;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ===== Layout ===== */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255,255,255,0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(255,255,255,0); }
}

.logo-text {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--text);
}

.nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-time {
  font-size: 13px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.nav-btn {
  font-size: 13px;
  color: var(--text-muted);
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: var(--transition);
}

.nav-btn:hover {
  color: var(--text);
  border-color: var(--text-muted);
  background: var(--bg-hover);
}

.nav-btn--hidden {
  display: none;
}

/* ===== Views ===== */
.main {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.view {
  display: none;
  opacity: 0;
  transform: translateY(16px);
  padding: 48px 0 80px;
}

.view.active {
  display: block;
  animation: viewIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes viewIn {
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Board View ===== */
.board-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 12px;
}

.board-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 2px;
}

.board-stats {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-num {
  color: var(--text);
  font-weight: 600;
}

.stat-divider {
  width: 1px;
  height: 12px;
  background: var(--border);
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
}

.live-dot {
  width: 6px;
  height: 6px;
  background: #4ade80;
  border-radius: 50%;
  animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Notice List */
.notice-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.notice-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  overflow: hidden;
  animation: cardIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes cardIn {
  to { opacity: 1; transform: translateY(0); }
}

.notice-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--normal);
}

.notice-card[data-level="important"]::before { background: var(--important); }
.notice-card[data-level="urgent"]::before { background: var(--urgent); }

.notice-card.pinned::before {
  width: 4px;
}

.notice-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.notice-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  flex-wrap: wrap;
}

.notice-level {
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.notice-level[data-level="normal"] {
  background: #222;
  color: var(--text-muted);
}

.notice-level[data-level="important"] {
  background: rgba(201, 162, 39, 0.15);
  color: var(--important);
}

.notice-level[data-level="urgent"] {
  background: rgba(230, 57, 70, 0.15);
  color: var(--urgent);
}

.notice-pin-badge {
  font-size: 11px;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 4px;
}

.notice-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

.notice-time {
  font-size: 12px;
  color: var(--text-dim);
  white-space: nowrap;
  flex-shrink: 0;
}

.notice-content {
  font-size: 0.95rem;
  color: #bbb;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-dim);
}

.empty-state.small {
  padding: 40px 20px;
}

.empty-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  color: var(--border);
}

.empty-state p {
  font-size: 14px;
}

/* ===== Login View ===== */
.view--login {
  display: none;
  justify-content: center;
  align-items: flex-start;
  padding-top: 80px;
}

.view--login.active {
  display: flex;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 40px;
  text-align: center;
}

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

.login-icon {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.login-header h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.login-sub {
  font-size: 13px;
  color: var(--text-muted);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-input {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: var(--transition);
}

.login-input:focus {
  border-color: var(--text-muted);
}

.login-input::placeholder {
  color: var(--text-dim);
}

.login-btn {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: var(--bg);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 4px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.login-btn:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.login-btn:active {
  transform: translateY(0);
}

.back-btn {
  margin-top: 24px;
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition);
}

.back-btn:hover {
  color: var(--text);
}

/* ===== Admin View ===== */
.view--admin {
  display: none;
}

.view--admin.active {
  display: block;
}

.admin-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.admin-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.admin-section-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.admin-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.admin-count {
  font-size: 13px;
  color: var(--text-muted);
  background: var(--bg);
  padding: 2px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

/* Publish Form */
.publish-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  outline: none;
  font-family: inherit;
  resize: vertical;
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--text-muted);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-dim);
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-group {
  flex: 1;
}

.form-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.level-picker {
  display: flex;
  gap: 8px;
}

.level-option {
  flex: 1;
  cursor: pointer;
}

.level-option input {
  display: none;
}

.level-option span {
  display: block;
  text-align: center;
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: var(--transition);
}

.level-option input:checked + span {
  border-color: var(--accent);
  color: var(--text);
  background: var(--bg-hover);
}

.publish-btn {
  padding: 14px;
  background: var(--accent);
  color: var(--bg);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  margin-top: 4px;
}

.publish-btn:hover {
  opacity: 0.85;
}

/* Admin List */
.admin-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 600px;
  overflow-y: auto;
}

.admin-list::-webkit-scrollbar {
  width: 4px;
}
.admin-list::-webkit-scrollbar-track {
  background: transparent;
}
.admin-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

.admin-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: var(--transition);
}

.admin-item:hover {
  border-color: var(--text-dim);
}

.admin-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.admin-item-title {
  font-size: 14px;
  font-weight: 500;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-item-time {
  font-size: 11px;
  color: var(--text-dim);
  flex-shrink: 0;
}

.admin-item-preview {
  font-size: 12px;
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-item-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.action-btn {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: var(--transition);
}

.action-btn:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.action-btn--danger:hover {
  color: var(--urgent);
  border-color: rgba(230, 57, 70, 0.4);
}

.action-btn--active {
  color: var(--accent);
  border-color: var(--text-muted);
}

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 13px;
  color: var(--text);
  animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.toast--success { border-left: 3px solid #4ade80; }
.toast--error { border-left: 3px solid var(--urgent); }
.toast--info { border-left: 3px solid var(--text-muted); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

.toast.fade-out {
  animation: toastOut 0.3s ease forwards;
}

@keyframes toastOut {
  to { opacity: 0; transform: translateX(40px); }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header-inner { padding: 0 16px; }
  .main { padding: 0 16px; }
  .board-title { font-size: 1.5rem; }
  .nav-time { display: none; }
  .admin-layout { grid-template-columns: 1fr; gap: 20px; }
  .admin-panel { padding: 24px 20px; }
  .login-card { padding: 36px 24px; }
  .notice-card { padding: 20px; }
  .toast-container { right: 16px; left: 16px; top: 72px; }
  .board-stats { flex-wrap: wrap; }
  .qr-btn { font-size: 12px; }
}

/* ===== QR Button & Modal ===== */
.qr-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  padding: 0;
  transition: var(--transition);
}

.qr-btn:hover {
  color: var(--text);
}

/* ===== Refresh Button ===== */
.refresh-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  padding: 0;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.refresh-btn:hover {
  color: var(--text);
}

.refresh-btn:active {
  transform: rotate(180deg);
}

.refresh-btn--spinning {
  pointer-events: none;
  opacity: 0.6;
}

.refresh-btn--spinning::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--text-muted);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-right: 4px;
}

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

.admin-refresh-btn {
  margin-left: auto;
  font-size: 12px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.admin-refresh-btn:hover {
  border-color: var(--text-muted);
}

.qr-modal {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10000;
  justify-content: center;
  align-items: center;
}

.qr-modal.active {
  display: flex;
  animation: viewIn 0.3s ease forwards;
}

.qr-modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 360px;
  width: 90%;
}

.qr-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.qr-modal-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.qr-close {
  font-size: 22px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  transition: var(--transition);
}

.qr-close:hover {
  color: var(--text);
}

.qr-modal-body {
  text-align: center;
}

.qr-image {
  width: 240px;
  height: 240px;
  border-radius: var(--radius-sm);
  margin: 0 auto 16px;
  display: block;
  background: #fff;
  padding: 8px;
}

.qr-url {
  font-size: 12px;
  color: var(--text-dim);
  word-break: break-all;
  margin-bottom: 8px;
}

.qr-hint {
  font-size: 13px;
  color: var(--text-muted);
}