:root {
  --bg-app:      #0e0e10;
  --bg-panel:    #18181b;
  --bg-card:     #1c1c20;
  --bg-glass:    rgba(20, 20, 24, 0.75);
  --accent:      #c3a05e;
  --accent-dim:  rgba(195, 160, 94, 0.15);
  --accent-glow: rgba(195, 160, 94, 0.25);
  --text-1:      #ffffff;
  --text-2:      #bababa;
  --text-3:      #6b6b72;
  --danger:      #e05252;
  --success:     #4caf7d;
  --topbar-h:    48px;
  --sidebar-w:   56px;
  --dock-h:      64px;
}

html, body {
  background: var(--bg-app);
  color: var(--text-1);
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  height: 100%;
  overflow: hidden;
}

body { margin: 0; }

/* Top navigation */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--bg-panel);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  z-index: 500;
  padding: 0 12px 0 0;
}

.topnav-logo {
  width: var(--sidebar-w);
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  text-decoration: none;
  border-right: 1px solid rgba(255,255,255,0.05);
  color: var(--accent);
}

.topnav-logo .logo-text { display: none; }

.topnav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 12px;
  flex: 1;
}

.tnl {
  padding: 5px 11px;
  border-radius: 4px;
  color: var(--text-2);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: all .15s ease;
  white-space: nowrap;
}

.tnl:hover { background: rgba(255,255,255,0.05); color: var(--text-1); }
.tnl.active { color: var(--accent); background: var(--accent-dim); }

.tnl-dropdown { position: relative; }
.dropdown-content {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  background: var(--bg-panel);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  min-width: 160px;
  z-index: 600;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}
.tnl-dropdown:hover .dropdown-content { display: block; }
.dropdown-content a {
  display: block;
  padding: 9px 14px;
  font-size: 13px;
  color: var(--text-2);
  transition: background .1s;
  text-decoration: none;
}
.dropdown-content a:hover { background: rgba(255,255,255,0.06); color: #fff; }

.topnav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex-shrink: 0;
}

.mob-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-2);
  font-size: 18px;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(255,255,255,0.1);
  user-select: none;
  border-radius: 6px;
}

.mob-nav {
  display: none;
  position: fixed;
  top: var(--topbar-h);
  left: 0; right: 0;
  background: rgba(24,24,27,0.97);
  backdrop-filter: blur(16px);
  z-index: 490;
  flex-direction: column;
  padding: 8px 0 16px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 12px 40px rgba(0,0,0,0.6);
}

.mob-nav.open { display: flex; }

.mob-nav a {
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  transition: color .15s;
}

.mob-nav a:hover,
.mob-nav a.active { color: var(--accent); }

/* Sidebar */
.icon-sidebar {
  position: fixed;
  left: 0;
  top: var(--topbar-h);
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg-panel);
  border-right: 1px solid rgba(255,255,255,0.06);
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  z-index: 190;
}

.cmd-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 14px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  text-decoration: none;
  flex-shrink: 0;
}

.cmd-brand-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--accent), rgba(195,160,94,0.5));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(195,160,94,0.2);
  flex-shrink: 0;
}

.cmd-brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.cmd-brand-name { font-size: 13px; font-weight: 800; color: var(--text-1); letter-spacing: .5px; }
.cmd-brand-sub  { font-size: 9px; font-weight: 600; color: var(--text-3); letter-spacing: 1.2px; text-transform: uppercase; }

.cmd-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  scrollbar-width: none;
}

.cmd-scroll::-webkit-scrollbar { display: none; }

.cmd-section-label {
  font-size: 13px;
  font-weight: 800;
  color: white;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  padding: 8px 8px 4px;
  margin-top: 4px;
}

.sbi {
  width: 100%;
  height: 38px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 10px;
  border-radius: 7px;
  cursor: pointer;
  color: var(--text-3);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: all .15s ease;
  background: transparent;
  border: none;
  white-space: nowrap;
  overflow: hidden;
  position: relative;
}

.sbi i { font-size: 14px; flex-shrink: 0; width: 16px; text-align: center; }
.sbi:hover { background: rgba(255,255,255,0.05); color: var(--text-1); }
.sbi.active { background: var(--accent-dim); color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); }
.sbi-label { font-size: 13px; font-weight: 600; }

.sbi-divider { height: 1px; background: rgba(255,255,255,0.05); margin: 8px 2px; flex-shrink: 0; }

.cmd-play-wrap { position: relative; }

.cmd-play-btn {
  width: 100%;
  height: 40px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 10px;
  border-radius: 7px;
  cursor: pointer;
  background: var(--accent);
  color: #0e0e10;
  font-size: 13px;
  font-weight: 800;
  border: none;
  white-space: nowrap;
  margin-bottom: 4px;
  letter-spacing: .3px;
  transition: all .15s;
  box-shadow: 0 4px 16px rgba(195,160,94,0.2);
}

.cmd-play-btn:hover { background: #d4b47a; }

.cmd-play-chevron { margin-left: auto; font-size: 10px; transition: transform .2s; }

.cmd-play-dropdown {
  display: none;
  flex-direction: column;
  gap: 1px;
  overflow: hidden;
  border-radius: 7px;
  background: rgba(14,14,16,0.6);
  border: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 4px;
}

.cmd-play-wrap:hover .cmd-play-dropdown { display: flex; }

.cmd-dd-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  color: var(--text-2);
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  transition: all .12s;
}

.cmd-dd-item i { font-size: 13px; color: var(--accent); flex-shrink: 0; width: 14px; text-align: center; }
.cmd-dd-item:hover { background: rgba(195,160,94,0.08); color: var(--text-1); }
.cmd-dd-label { flex: 1; }
.cmd-dd-sub { font-size: 10px; color: var(--text-3); font-weight: 500; }

.cmd-footer {
  padding: 10px 8px 12px;
  border-top: 1px solid rgba(255,255,255,0.05);
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex-shrink: 0;
}

.cmd-auth-row { display: flex; gap: 6px; margin-bottom: 6px; }

.cmd-auth-btn {
  flex: 1;
  padding: 7px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  letter-spacing: .3px;
  transition: all .15s;
}

.cmd-signin {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-2);
}

.cmd-signin:hover { background: rgba(255,255,255,0.09); color: #fff; }

.cmd-signup {
  background: var(--accent);
  border: 1px solid transparent;
  color: #0e0e10;
}

.cmd-signup:hover { background: #d4b47a; }

.cmd-lang {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: 6px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.07);
  color: var(--text-3);
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
  transition: all .15s;
  width: 100%;
}

.cmd-lang:hover { background: rgba(255,255,255,0.04); color: var(--text-2); }

.cmd-lang select {
  background: transparent;
  border: none;
  color: inherit;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  flex: 1;
  outline: none;
  appearance: none;
}

.cmd-lang select option { background: var(--bg-panel); color: var(--text-1); }

/* App shell */
.app-shell {
  position: fixed;
  top: var(--topbar-h);
  left: var(--sidebar-w);
  right: 0;
  bottom: 0;
  display: flex;
  overflow: hidden;
}

.board-zone {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-width: 0;
  padding: 16px 20px;
  overflow: hidden;
}

/* Generic controls */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:9px 18px; border-radius:6px; font-size:13px; font-weight:700; cursor:pointer; border:1px solid transparent; text-decoration:none; text-transform:uppercase; letter-spacing:.5px; transition:all .2s; }
.btn-p { background:var(--accent); color:#000; box-shadow:0 4px 12px rgba(195,160,94,0.2); }
.btn-p:hover { background:#d4b47a; transform:translateY(-1px); }
.btn-s { background:rgba(255,255,255,0.05); border-color:rgba(255,255,255,0.1); color:var(--text-2); }
.btn-s:hover { background:rgba(255,255,255,0.1); color:#fff; border-color:var(--accent); }

/* Scrollbars */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* Mobile layout */
@media (max-width: 768px) {
  .icon-sidebar { display: none !important; }
  .topnav-links { display: none !important; }
  .mob-menu-btn { display: flex !important; }
  .topnav-logo { width: 48px !important; font-size: 18px !important; border-right: none !important; }

  .app-shell { left: 0 !important; flex-direction: column; }
  .board-zone { flex: 1; padding: 12px; overflow: hidden; display: block; width: 100%; }
}