/* ============================================================
   BFireworks — Kimi-inspired clean design
   ============================================================ */
:root {
  /* Light mode */
  --bg: #f8f9fb;
  --surface: #ffffff;
  --surface-alt: #f3f4f6;
  --border: #e5e7eb;
  --border-light: #f0f1f3;
  --text: #111827;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  --accent: #1967d2;
  --accent-hover: #1557b0;
  --accent-light: #eff6ff;
  --accent-soft: rgba(25,103,210,0.08);
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --warning: #f59e0b;
  --sidebar-w: 220px;
  --topbar-h: 56px;
  --radius: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
  --ease-out: 0.25s cubic-bezier(0,0,0.2,1);
  --ease-spring: 0.35s cubic-bezier(0.34,1.56,0.64,1);
}

/* ═══════════════════ Dark Theme ═══════════════════ */
html.dark {
  --bg: #0a0a0b;
  --surface: #141416;
  --surface-alt: #1c1c1f;
  --border: #2a2a2e;
  --border-light: #1e1e22;
  --text: #ececee;
  --text-secondary: #9e9ea6;
  --text-muted: #5c5c64;
  --accent: #4d94ff;
  --accent-hover: #6ba6ff;
  --accent-light: #121b2e;
  --accent-soft: rgba(77,148,255,0.1);
  --danger: #f87171;
  --danger-light: #1f1315;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
}
html.dark .sidebar { background: #0d0d0f; }
html.dark .login-screen { background: #070709; }

/* ═══════════════════ Reset ═══════════════════ */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  height: 100vh; overflow: hidden;
  font-size: 14px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.01em;
}

/* ═══════════════════ Scrollbar ═══════════════════ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ═══════════════════ Login Screen ═══════════════════ */
.login-screen {
  position: fixed; inset: 0; z-index: 100;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: #08080b;
}
.login-screen.fade-out { opacity: 0; transition: opacity 0.4s ease; pointer-events: none; }
.login-bg {
  position: absolute; inset: -40px;
  background: url('../img/login-bg.jpg') center/cover no-repeat;
  filter: blur(6px) brightness(0.6);
  z-index: 0;
}
.login-bg::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(8,8,11,0.5) 100%);
}

/* Stage 1 — Landing */
.login-landing { position: relative; z-index: 2; text-align: center; animation: landingIn 0.8s var(--ease-out); }
@keyframes landingIn { from { opacity: 0; transform: translateY(24px); } }
.login-landing .landing-buttons { display: flex; gap: 80px; justify-content: center; }
.login-landing .landing-btn {
  width: 140px; padding: 14px 0;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-xl); cursor: pointer;
  font-size: 16px; font-weight: 400;
  transition: all 0.4s cubic-bezier(0.4,0,0.2,1); outline: none;
  color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  letter-spacing: 2px;
}
.login-landing .landing-btn:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
  color: #fff;
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
  transform: translateY(-4px);
}
.login-landing .landing-btn:active { transform: translateY(0) scale(0.97); }

.login-footer {
  position: absolute; bottom: 28px; z-index: 2;
  color: rgba(255,255,255,0.12); font-size: 11px;
  letter-spacing: 3px; text-align: center; width: 100%;
}
.login-Upfooter {
  position: absolute; bottom: 56px; z-index: 2;
  color: rgba(255,255,255,0.12); font-size: 11px;
  letter-spacing: 2px; text-align: center; width: 100%;
}

/* Stage 2 — Login Form */
.login-form-panel {
  position: relative; z-index: 2; display: none;
  width: 360px; max-width: 90vw; text-align: center;
  animation: formIn var(--ease-spring);
}
@keyframes formIn { from { opacity: 0; transform: scale(0.94) translateY(12px); } }
.login-form-panel.show { display: block; }
.login-form-panel .back-link {
  display: inline-block; cursor: pointer;
  color: rgba(255,255,255,0.3); font-size: 13px;
  margin-bottom: 20px; transition: color 0.2s;
}
.login-form-panel .back-link:hover { color: rgba(255,255,255,0.65); }
.login-form-panel .form-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg); padding: 28px 24px 24px;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  text-align: left;
}
.login-form-panel .form-card h2 {
  text-align: center; font-size: 18px; font-weight: 500;
  color: #fff; margin-bottom: 20px; letter-spacing: 1px;
}
.login-form-panel .field { margin-bottom: 14px; }
.login-form-panel .field label {
  display: block; font-size: 11px; color: rgba(255,255,255,0.35);
  margin-bottom: 4px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px;
}
.login-form-panel .field input {
  width: 100%; padding: 10px 14px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius); color: #fff;
  font-size: 14px; outline: none; transition: all var(--transition);
}
.login-form-panel .field input:focus {
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.05);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.04);
}
.login-form-panel .btn {
  width: 100%; padding: 11px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius); font-size: 15px; font-weight: 400;
  cursor: pointer; transition: all 0.3s ease; outline: none;
  color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  letter-spacing: 2px;
  margin-top: 6px;
}
.login-form-panel .btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.18);
  color: #fff;
}
.login-form-panel .btn:active { transform: scale(0.98); }
.login-error {
  color: var(--danger); font-size: 12px;
  text-align: center; margin-top: 8px; min-height: 18px;
}

/* ═══════════════════ Form Elements ═══════════════════ */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 500;
  color: var(--text); margin-bottom: 5px;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 14px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius); font-size: 14px;
  color: var(--text); outline: none;
  transition: all var(--transition);
  font-family: var(--font);
}
.form-group input:hover, .form-group select:hover { border-color: #c4c7cc; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: var(--surface);
}
html.dark .form-group input:hover, html.dark .form-group select:hover { border-color: #3a3a40; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; padding: 9px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius); font-size: 14px; font-weight: 500;
  cursor: pointer; transition: all var(--transition);
  text-align: center; outline: none;
  background: var(--surface); color: var(--text);
  position: relative; overflow: hidden;
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  border-color: #c4c7cc;
}
.btn:active { transform: translateY(0) scale(0.98); }
.btn-primary {
  background: var(--accent); border-color: var(--accent); color: #fff;
  font-weight: 500;
}
.btn-primary:hover {
  background: var(--accent-hover); border-color: var(--accent-hover);
  box-shadow: 0 4px 16px rgba(25,103,210,0.3);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0) scale(0.97); }
.btn-danger {
  color: var(--danger);
  border-color: rgba(220,38,38,0.25);
}
.btn-danger:hover { background: var(--danger-light); border-color: var(--danger); }
.btn-block { width: 100%; }

.btn-sm {
  padding: 5px 12px; font-size: 12px; border-radius: 6px;
  border: 1px solid var(--border); cursor: pointer; font-weight: 500;
  transition: all var(--transition); margin-right: 4px; outline: none;
  background: var(--surface); color: var(--text-secondary);
  display: inline-flex; align-items: center; gap: 3px;
}
.btn-sm:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm:active { transform: scale(0.95); }
.btn-sm.danger { color: var(--danger); border-color: rgba(220,38,38,0.2); }
.btn-sm.danger:hover { background: var(--danger-light); border-color: var(--danger); }

.search-wrap { position: relative; margin-bottom: 14px; }
.search-wrap input { padding-left: 36px !important; }
.search-wrap svg {
  position: absolute; left: 12px; top: 50%;
  transform: translateY(-50%); width: 16px; height: 16px;
  color: var(--text-muted); pointer-events: none;
}

/* ═══════════════════ App Shell ═══════════════════ */
.app-shell { display: none; height: 100vh; width: 100vw; }
.app-inner { display: flex; height: 100%; }

/* Menu toggle */
.menu-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border: none; background: none;
  cursor: pointer; color: var(--text-secondary); outline: none;
  border-radius: var(--radius); flex-shrink: 0;
}
.menu-toggle:hover { background: var(--surface-alt); }
.menu-toggle span {
  display: block; width: 16px; height: 2px;
  background: currentColor; position: relative; border-radius: 1px;
}
.menu-toggle span::before, .menu-toggle span::after {
  content: ''; display: block; width: 16px; height: 2px;
  background: currentColor; position: absolute; left: 0;
  transition: transform 0.2s; border-radius: 1px;
}
.menu-toggle span::before { top: -5px; }
.menu-toggle span::after { top: 5px; }

/* Sidebar overlay */
.sidebar-overlay { display: none; }

/* ═══════════════════ Sidebar ═══════════════════ */
.sidebar {
  width: var(--sidebar-w); min-width: var(--sidebar-w);
  background: #0f0f12;
  display: flex; flex-direction: column; z-index: 50; color: #fff;
  transition: width 0.3s var(--ease-out), min-width 0.3s var(--ease-out);
  border-right: 1px solid rgba(255,255,255,0.04);
}
.sidebar.collapsed { --sidebar-w: 56px; }
.sidebar.collapsed .sidebar-head span,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .nav-item .chevron,
.sidebar.collapsed .sidebar-theme,
.sidebar.collapsed .sidebar-foot .uname,
.sidebar.collapsed .sidebar-foot .logout-btn,
.sidebar.collapsed .nav-sub { display: none; }
.sidebar.collapsed .nav-item { padding: 9px 0; justify-content: center; }
.sidebar.collapsed .sidebar-head { justify-content: center; padding: 0; }

.sidebar-head {
  height: var(--topbar-h); display: flex; align-items: center; gap: 10px;
  padding: 0 16px; flex-shrink: 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-weight: 600; font-size: 15px; color: #fff;
}
.sidebar-head .logo-dot {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.sidebar-head .logo-dot svg { width: 15px; height: 15px; color: #fff; }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 10px 0; }

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 14px; width: calc(100% - 16px);
  margin: 2px 8px; border-radius: var(--radius);
  cursor: pointer; color: rgba(255,255,255,0.45);
  font-size: 13px; font-weight: 400;
  transition: all var(--transition);
  border: none; background: none; text-align: left; outline: none;
  position: relative;
}
.nav-item:hover {
  color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.04);
}
.nav-item.active {
  color: #fff;
  background: rgba(77,148,255,0.12);
  font-weight: 500;
  box-shadow: inset 0 0 0 1px rgba(77,148,255,0.15);
}
.nav-item.active .nav-icon { opacity: 1; color: var(--accent); }
.nav-item:active { transform: scale(0.97); }
.nav-item .nav-icon {
  width: 18px; height: 18px; flex-shrink: 0;
  opacity: 0.45; transition: all var(--transition);
}
.nav-item .chevron {
  width: 10px; height: 10px; margin-left: auto;
  opacity: 0.3; transition: transform 0.2s;
}
.nav-item .chevron.open { transform: rotate(90deg); }

.nav-sub { overflow: hidden; max-height: 0; transition: max-height 0.25s ease; }
.nav-sub.open { max-height: 200px; }
.nav-sub .nav-item { padding-left: 38px; font-size: 12px; }

.sidebar-foot {
  padding: 10px 16px;
  border-top: 1px solid rgba(255,255,255,0.04);
  display: flex; align-items: center; gap: 10px; flex-shrink: 0;
}
.sidebar-foot .avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.sidebar-foot .uname {
  font-size: 12px; color: rgba(255,255,255,0.5);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sidebar-foot .logout-btn {
  margin-left: auto; cursor: pointer; background: none;
  border: none; outline: none; padding: 4px;
  color: rgba(255,255,255,0.3); transition: var(--transition); display: flex;
}
.sidebar-foot .logout-btn:hover { color: rgba(255,255,255,0.7); }
.sidebar-foot .logout-btn svg { width: 15px; height: 15px; }

.sidebar-theme {
  padding: 10px 16px; display: flex; justify-content: center; flex-shrink: 0;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.sidebar-theme theme-button { display: inline-flex; }

/* ═══════════════════ Main + Topbar ═══════════════════ */
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; background: var(--bg); }
.topbar {
  height: var(--topbar-h); flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 24px;
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  position: relative; z-index: 10;
}
html.dark .topbar {
  background: rgba(20,20,22,0.8);
  border-bottom-color: var(--border);
}
.topbar .breadcrumb {
  font-size: 13px; color: var(--text-muted);
  display: flex; align-items: center; gap: 6px;
}
.topbar .breadcrumb .current { color: var(--text); font-weight: 500; }

.content { flex: 1; overflow-y: auto; padding: 28px 32px; }

/* ═══════════════════ Card ═══════════════════ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 24px; margin-bottom: 16px;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  border-color: rgba(25,103,210,0.12);
  box-shadow: var(--shadow);
}
.card h2 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.card h3 {
  font-size: 14px; font-weight: 600; margin-bottom: 8px;
  color: var(--text-secondary);
}
.card p { color: var(--text-secondary); line-height: 1.7; font-size: 13px; }

/* ═══════════════════ Stats ═══════════════════ */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px; margin-bottom: 18px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  transition: all var(--transition);
  cursor: default; position: relative; overflow: hidden;
}
.stat-card::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--accent); opacity: 0; transition: opacity var(--transition);
}
.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(25,103,210,0.12);
}
.stat-card:hover::after { opacity: 1; }
.stat-card .num { font-size: 30px; font-weight: 700; color: var(--text); }
.stat-card:hover .num { transform: scale(1.04); transition: transform var(--ease-spring); }
.stat-card .lbl { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ═══════════════════ Table ═══════════════════ */
.tbl-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 11px 16px; text-align: left;
  border-bottom: 1px solid var(--border-light); font-size: 13px;
}
th {
  color: var(--text-secondary); font-weight: 600; font-size: 11px;
  background: var(--surface-alt);
  text-transform: uppercase; letter-spacing: 0.5px;
}
tr { transition: background var(--transition); }
tr:hover td { background: var(--accent-soft); }

.badge {
  display: inline-block; padding: 3px 10px; border-radius: 100px;
  font-size: 11px; font-weight: 500;
}
.badge-admin { background: var(--accent-soft); color: var(--accent); }
.badge-user { background: var(--surface-alt); color: var(--text-secondary); }

/* ═══════════════════ Modal ═══════════════════ */
.modal-mask {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.4); align-items: center; justify-content: center;
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.modal-mask.show { display: flex; }
.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 30px; width: 440px; max-width: 92vw;
  box-shadow: var(--shadow-lg);
  animation: modalIn var(--ease-spring);
}
@keyframes modalIn { from { transform: scale(0.92) translateY(16px); opacity: 0; } }
.modal-box h3 { margin-bottom: 14px; font-size: 16px; font-weight: 600; }

/* ═══════════════════ Toast ═══════════════════ */
.toast-ctn {
  position: fixed; top: 20px; right: 20px; z-index: 999;
  display: flex; flex-direction: column; gap: 8px;
}
.toast {
  padding: 12px 20px; border-radius: var(--radius);
  font-size: 13px; font-weight: 500;
  animation: toastIn var(--ease-spring);
  color: #fff; max-width: 320px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.toast-ok { background: var(--accent); }
.toast-err { background: var(--danger); }
@keyframes toastIn { from { transform: translateX(100%); opacity: 0; } }

/* ═══════════════════ Home ═══════════════════ */
.home-hero {
  background: linear-gradient(135deg, #eff6ff 0%, #f8f9fb 40%, #f0f4ff 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px; margin-bottom: 22px;
  display: flex; align-items: center; justify-content: space-between;
}
html.dark .home-hero {
  background: linear-gradient(135deg, #111827 0%, #0f1119 40%, #0d1322 100%);
}
.home-hero-text { flex: 1; }
.home-greet {
  font-size: 24px; font-weight: 700; color: var(--text);
  margin-bottom: 8px; letter-spacing: -0.02em;
}
.home-sub { font-size: 14px; color: var(--text-muted); }

.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px; margin-bottom: 22px;
}
.home-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  display: flex; align-items: center; gap: 14px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.home-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--hc, var(--accent)); border-radius: 0 3px 3px 0;
  transition: width var(--ease-out);
}
.home-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(25,103,210,0.1);
}
.home-card:hover::before { width: 5px; }
.home-card:active { transform: scale(0.98); }
.home-card-icon {
  width: 44px; height: 44px; border-radius: var(--radius);
  background: var(--hc, var(--accent));
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; color: #fff; opacity: 0.9;
}
.home-card-icon svg { width: 20px; height: 20px; }
.home-card-body { flex: 1; min-width: 0; }
.home-card-title { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.home-card-desc {
  font-size: 12px; color: var(--text-muted); line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.home-card-arrow { color: var(--text-muted); flex-shrink: 0; transition: transform var(--transition); }
.home-card-arrow svg { width: 16px; height: 16px; }
.home-card:hover .home-card-arrow { transform: translateX(4px); color: var(--accent); }

.home-news h3 { display: flex; align-items: center; gap: 6px; }
.home-news h3 svg { opacity: 0.4; }

/* ═══════════════════ Messages ═══════════════════ */
.msg-tab {
  padding: 8px 20px; border: none; background: none; cursor: pointer;
  font-size: 14px; color: var(--text-muted);
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  transition: var(--transition); outline: none;
}
.msg-tab:hover { color: var(--text); }
.msg-tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

.msg-type-btn {
  padding: 5px 14px; border-radius: 100px;
  border: 1px solid var(--border); background: var(--surface);
  cursor: pointer; font-size: 12px; color: var(--text-muted);
  transition: var(--transition); outline: none;
}
.msg-type-btn:hover { border-color: var(--accent); color: var(--accent); }
.msg-type-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ═══════════════════ Fireworks ═══════════════════ */
.fw-wrap {
  position: relative; width: 100%;
  height: calc(100vh - var(--topbar-h) - 40px);
  border-radius: var(--radius-md); overflow: hidden; cursor: crosshair;
  background: #08080e; border: 1px solid var(--border);
}
.fw-wrap canvas { display: block; }
.fw-hint {
  position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,0.3); font-size: 12px;
  pointer-events: none; z-index: 5; transition: opacity 0.5s;
}
.fw-bar {
  position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 6px; z-index: 5;
  background: rgba(0,0,0,0.7); border-radius: 100px; padding: 5px;
  border: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.fw-chip {
  padding: 7px 16px; border-radius: 100px; border: none;
  cursor: pointer; font-size: 12px; transition: all var(--transition);
  background: transparent; color: rgba(255,255,255,0.6); outline: none; white-space: nowrap;
}
.fw-chip:hover { color: rgba(255,255,255,0.85); }
.fw-chip.active { background: rgba(255,255,255,0.12); color: #fff; font-weight: 500; }

/* Color palette */
.color-palette {
  position: absolute; top: 16px; right: 16px; z-index: 6;
  background: rgba(0,0,0,0.6); border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: all 0.3s ease; overflow: hidden;
}
.palette-toggle {
  display: flex; align-items: center; gap: 6px;
  padding: 9px 12px; cursor: pointer; background: none; border: none;
  color: rgba(255,255,255,0.45); font-size: 11px; outline: none; width: 100%;
  transition: color 0.2s;
}
.palette-toggle:hover { color: #fff; }
.palette-toggle .toggle-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.5); flex-shrink: 0;
}
.palette-body { display: none; padding: 0 14px 12px; flex-direction: column; gap: 8px; }
.palette-body.open { display: flex; }
.color-row { display: flex; flex-wrap: wrap; gap: 6px; max-width: 220px; }
.color-swatch {
  width: 24px; height: 24px; border-radius: 50%; cursor: pointer;
  border: 2px solid transparent; transition: all var(--transition);
  position: relative; flex-shrink: 0;
}
.color-swatch:hover { transform: scale(1.15); }
.color-swatch.active { border-color: #fff; box-shadow: 0 0 8px rgba(255,255,255,0.4); }
.color-swatch.inactive { opacity: 0.25; }
.color-swatch .remove-x {
  position: absolute; top: -4px; right: -4px; width: 14px; height: 14px;
  border-radius: 50%; background: rgba(0,0,0,0.8); color: #fff; font-size: 9px;
  line-height: 14px; text-align: center; display: none; cursor: pointer;
}
.color-swatch.custom:hover .remove-x { display: block; }
.palette-actions { display: flex; gap: 4px; }
.palette-actions button {
  flex: 1; padding: 5px 0; font-size: 10px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px; cursor: pointer; background: transparent;
  color: rgba(255,255,255,0.45); transition: var(--transition); outline: none;
}
.palette-actions button:hover { color: #fff; border-color: rgba(255,255,255,0.22); }
.palette-label { font-size: 10px; color: rgba(255,255,255,0.3); text-align: center; }
.palette-picker { display: flex; align-items: center; gap: 8px; }
.palette-picker input[type=color] {
  -webkit-appearance: none; width: 28px; height: 28px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12); cursor: pointer; background: none; padding: 0;
}
.palette-picker input[type=color]::-webkit-color-swatch-wrapper { padding: 0; }
.palette-picker input[type=color]::-webkit-color-swatch { border-radius: 50%; border: none; }
.palette-picker span { font-size: 10px; color: rgba(255,255,255,0.35); }

/* Room panel */
.room-panel {
  position: absolute; right: 0; bottom: 100%; margin-bottom: 8px;
  background: #16161c; border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius); padding: 6px; min-width: 170px; z-index: 20;
  box-shadow: 0 -6px 24px rgba(0,0,0,0.4);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.room-panel button {
  display: block; width: 100%; text-align: left;
  background: transparent; border: none; color: rgba(255,255,255,0.7);
  padding: 7px 10px; border-radius: 6px; font-size: 12px; cursor: pointer;
  transition: var(--transition);
}
.room-panel button:hover { background: rgba(255,255,255,0.06); color: #fff; }

/* ═══════════════════ 跳一跳 ═══════════════════ */
.jump-layout { display: flex; gap: 16px; align-items: flex-start; }
.jump-stage { flex: 1; min-width: 0; }
.jump-side { width: 300px; flex-shrink: 0; }
.jump-wrap {
  position: relative; width: 100%;
  height: calc(100vh - var(--topbar-h) - 40px);
  min-height: 460px; border-radius: var(--radius-lg); overflow: hidden;
  background: linear-gradient(180deg, #a3c8f0 0%, #cddff2 45%, #eef4fb 100%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  cursor: pointer; user-select: none; -webkit-user-select: none; touch-action: none;
}
.jump-wrap canvas { display: block; }
.jump-hud { position: absolute; top: 16px; left: 20px; z-index: 5; pointer-events: none; }
.jump-score-num {
  font-size: 42px; font-weight: 700; color: #1f2937; line-height: 1;
  text-shadow: 0 2px 12px rgba(255,255,255,0.6);
}
.jump-score-lbl {
  font-size: 11px; color: rgba(31,41,55,0.5); margin-top: 4px; letter-spacing: 2px;
}
.jump-topright {
  position: absolute; top: 18px; right: 18px; z-index: 6;
  display: flex; gap: 6px; align-items: center;
}
.jump-best {
  background: rgba(255,255,255,0.6); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 6px 14px; border-radius: 100px; font-size: 12px;
  color: #1f2937; font-weight: 600; border: 1px solid rgba(255,255,255,0.8);
}
.jump-mini-btn {
  width: 28px; height: 28px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.6); backdrop-filter: blur(8px);
  color: #1f2937; font-size: 14px; cursor: pointer; outline: none;
  display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.jump-mini-btn:hover { background: rgba(255,255,255,0.9); transform: rotate(-30deg); }
.jump-hint {
  position: absolute; bottom: 70px; left: 50%; transform: translateX(-50%);
  color: rgba(31,41,55,0.45); font-size: 12px; z-index: 5;
  pointer-events: none; transition: opacity 0.4s; white-space: nowrap; letter-spacing: 1px;
}
.jump-power {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  width: 220px; height: 10px; background: rgba(255,255,255,0.5);
  border-radius: 10px; z-index: 6; overflow: hidden;
  border: 1px solid rgba(255,255,255,0.7);
}
.jump-power-fill {
  height: 100%; width: 0;
  background: linear-gradient(90deg, #22c55e, #eab308, #ef4444);
  border-radius: 10px;
}
.jump-over {
  position: absolute; inset: 0; z-index: 8;
  display: flex; align-items: center; justify-content: center;
  background: rgba(15,23,42,0.35); backdrop-filter: blur(4px);
  animation: jFadeIn 0.3s ease;
}
@keyframes jFadeIn { from { opacity: 0; } }
.jump-over-box {
  background: rgba(255,255,255,0.95); border-radius: var(--radius-lg);
  padding: 28px 30px 22px; text-align: center; width: 280px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  animation: jPop 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes jPop { from { transform: scale(0.85); opacity: 0; } }
.jo-title { font-size: 13px; color: var(--text-muted); letter-spacing: 3px; }
.jo-score { font-size: 48px; font-weight: 700; color: #1f2937; line-height: 1.15; margin: 6px 0 4px; }
.jo-best { font-size: 12px; color: var(--text-secondary); margin-bottom: 16px; }
.jo-record { color: #e8a020; font-weight: 700; }
.jo-input {
  width: 100%; padding: 10px 14px; margin-bottom: 14px; text-align: center;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 14px; color: var(--text); outline: none; transition: var(--transition);
}
.jo-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.jo-btns { display: flex; gap: 8px; }
.jo-btns .btn { flex: 1; padding: 10px 0; border-radius: var(--radius); }
.jo-btns .btn:disabled { opacity: 0.5; cursor: default; }

/* Leaderboard */
.jump-rank-card h3 svg { vertical-align: -2px; margin-right: 2px; }
.jr-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 4px; border-bottom: 1px solid var(--border-light);
  font-size: 13px; border-radius: 6px;
}
.jr-row:last-child { border-bottom: none; }
.jr-me { background: var(--accent-soft); }
.jr-rank {
  width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
  background: var(--surface-alt); color: var(--text-secondary);
}
.jr-rank.r1 { background: linear-gradient(135deg,#fbbf24,#f59e0b); color: #78350f; }
.jr-rank.r2 { background: linear-gradient(135deg,#e5e7eb,#9ca3af); color: #374151; }
.jr-rank.r3 { background: linear-gradient(135deg,#fcd34d,#d97706); color: #78350f; }
.jr-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }
.jr-score { font-weight: 700; color: var(--accent); min-width: 30px; text-align: right; font-variant-numeric: tabular-nums; }
.jr-date { font-size: 11px; color: var(--text-muted); }
.jr-del { padding: 2px 6px; margin: 0; }

/* ═══════════════════ 俄罗斯方块 ═══════════════════ */
.tetris-layout {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  width: 100%; height: calc(100vh - 64px);
  background: radial-gradient(ellipse at 50% 40%, rgba(25,103,210,0.04), transparent 60%);
  border-radius: var(--radius-lg);
}
html.dark .tetris-layout {
  background: radial-gradient(ellipse at 50% 40%, rgba(77,148,255,0.04), transparent 60%), #0a0a0c;
}
.tetris-topbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center;
  padding: 8px 16px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-md);
}
.t-next-box { width: 50px; height: 50px; border-radius: 6px; flex-shrink: 0; }
.tetris-topbar .t-stat {
  display: flex; flex-direction: column; align-items: center; min-width: 36px;
  font-size: 16px; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums;
}
.tetris-topbar .t-slbl {
  font-size: 10px; color: var(--text-muted); font-weight: 400; letter-spacing: 1px;
}
.tetris-topbar .btn {
  padding: 6px 14px; font-size: 12px; border-radius: var(--radius); white-space: nowrap;
}
.tetris-btn-go {
  background: var(--accent) !important; border-color: var(--accent) !important;
  color: #fff !important; font-weight: 600;
  box-shadow: 0 2px 12px rgba(25,103,210,0.35);
}
.tetris-btn-go:hover {
  box-shadow: 0 4px 20px rgba(25,103,210,0.5) !important;
  transform: translateY(-1px) !important;
}
.tetris-main { display: flex; justify-content: center; flex: 1; min-height: 0; }
.tetris-main canvas {
  border-radius: var(--radius-md);
  box-shadow: 0 0 60px rgba(25,103,210,0.08), 0 8px 32px rgba(0,0,0,0.15);
  max-height: 100%; max-width: 100%; display: block;
}
.t-foot {
  text-align: center; padding: 4px 0 6px;
  font-size: 11px; color: var(--text-muted); flex-shrink: 0;
}
.t-foot-desk { display: inline; }
.t-foot-touch { display: none; }

/* ═══════════════════ Responsive ═══════════════════ */
@media (max-width: 900px) {
  .jump-layout { flex-direction: column; }
  .jump-side { width: 100%; }
  .jump-wrap { height: 62vh; min-height: 380px; }
  .jump-score-num { font-size: 34px; }
  .jump-power { width: 180px; }
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; z-index: 300;
    width: 220px; min-width: 220px;
    transform: translateX(-100%); transition: transform 0.25s ease;
  }
  .sidebar.open { transform: translateX(0); box-shadow: 4px 0 30px rgba(0,0,0,0.4); }
  .sidebar.collapsed { --sidebar-w: 220px; }
  .sidebar-overlay {
    display: none; position: fixed; inset: 0; z-index: 299;
    background: rgba(0,0,0,0.5);
  }
  .sidebar-overlay.show { display: block; }
  .menu-toggle { display: flex; margin-right: 4px; }
  .main { margin-left: 0; }
  .content { padding: 14px 16px; }
  .topbar { padding: 0 12px; }
  .stat-row { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat-card { padding: 14px 16px; }
  .stat-card .num { font-size: 24px; }
  th, td { padding: 8px 10px; font-size: 11px; }
  .card { padding: 16px 18px; }
  .card h2 { font-size: 15px; }
  .modal-box { padding: 20px 22px; width: 340px; }
  .toast { max-width: 240px; font-size: 12px; }
  .login-landing .landing-buttons { gap: 36px; }
  .login-landing .landing-btn { width: 100px; padding: 10px 0; font-size: 13px; }
  .login-form-panel .form-card { padding: 20px 16px 18px; }
  .login-footer { font-size: 10px; bottom: 14px; }
  .home-hero { padding: 24px 26px; }
  .home-greet { font-size: 20px; }
  .home-sub { font-size: 12px; }
  .home-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
  .home-card { padding: 16px 18px; gap: 12px; }
  .home-card-icon { width: 36px; height: 36px; }
  .home-card-icon svg { width: 18px; height: 18px; }
  .home-card-title { font-size: 14px; }
  .home-card-desc { font-size: 11px; }
  .form-group input, .form-group select { padding: 9px 12px; font-size: 13px; }
  .btn { padding: 8px 18px; font-size: 13px; }
  .t-foot-desk { display: none; }
  .t-foot-touch { display: inline; }
}

@media (hover: none) {
  .nav-item:hover { background: none; }
}