/* ═══════════════════════════════════════════════════════════
   GymOS — Dark Modern Theme v2 + Light Mode
   ═══════════════════════════════════════════════════════════ */

:root {
  --ga-bg: #060a13;
  --ga-surface: #0c1220;
  --ga-card: #111827;
  --ga-card-hover: #1a2332;
  --ga-border: #1e293b;
  --ga-border-light: #334155;
  --ga-accent: #3b82f6;
  --ga-accent-glow: rgba(59, 130, 246, .15);
  --ga-accent2: #8b5cf6;
  --ga-success: #10b981;
  --ga-warning: #f59e0b;
  --ga-danger: #ef4444;
  --ga-text: #e5e7eb;
  --ga-muted: #94a3b8;
  --ga-primary: var(--ga-accent);
  --ga-radius: 12px;
  --ga-radius-lg: 16px;
  --ga-transition: .2s cubic-bezier(.4, 0, .2, 1);
  --ga-shadow: 0 4px 24px rgba(0, 0, 0, .4);
  --ga-shadow-lg: 0 12px 40px rgba(0, 0, 0, .5);
  --ga-glow: 0 0 30px rgba(59, 130, 246, .08);
}

/* ── Light Mode ──────────────────────────────────────── */
:root[data-theme="light"] {
  --ga-bg: #f5f7fa;
  --ga-surface: #ffffff;
  --ga-card: #ffffff;
  --ga-card-hover: #f0f4f8;
  --ga-border: #e2e8f0;
  --ga-border-light: #cbd5e1;
  --ga-accent-glow: rgba(59, 130, 246, .1);
  --ga-text: #1e293b;
  --ga-muted: #64748b;
  --ga-shadow: 0 4px 24px rgba(0, 0, 0, .08);
  --ga-shadow-lg: 0 12px 40px rgba(0, 0, 0, .12);
  --ga-glow: 0 0 30px rgba(59, 130, 246, .05);
}

/* Auto mode (follows OS preference) */
@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] {
    --ga-bg: #f5f7fa;
    --ga-surface: #ffffff;
    --ga-card: #ffffff;
    --ga-card-hover: #f0f4f8;
    --ga-border: #e2e8f0;
    --ga-border-light: #cbd5e1;
    --ga-accent-glow: rgba(59, 130, 246, .1);
    --ga-text: #1e293b;
    --ga-muted: #64748b;
    --ga-shadow: 0 4px 24px rgba(0, 0, 0, .08);
    --ga-shadow-lg: 0 12px 40px rgba(0, 0, 0, .12);
    --ga-glow: 0 0 30px rgba(59, 130, 246, .05);
  }
}

/* ── Base ──────────────────────────────────────────── */
body {
  background: var(--ga-bg);
  color: var(--ga-text);
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--ga-accent); color: white; }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--ga-bg); }
::-webkit-scrollbar-thumb { background: var(--ga-border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--ga-muted); }

/* ── Login ─────────────────────────────────────────── */
#app-login {
  display: none; align-items: center; justify-content: center; min-height: 100vh;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, .08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, .06) 0%, transparent 50%),
    linear-gradient(180deg, #060a13 0%, #0a1628 100%);
}

.login-card {
  background: rgba(12, 18, 32, .85);
  backdrop-filter: blur(20px);
  border: 1px solid var(--ga-border);
  border-radius: var(--ga-radius-lg);
  padding: 2.5rem;
  width: 100%; max-width: 420px;
  box-shadow: var(--ga-shadow-lg), var(--ga-glow);
}

.brand-logo {
  font-size: 2rem; font-weight: 800;
  background: linear-gradient(135deg, var(--ga-accent), var(--ga-accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  letter-spacing: -.02em;
}

/* ── Layout ────────────────────────────────────────── */
#app-main { display: none; }

.sidebar {
  width: 250px; height: 100vh; height: 100dvh;
  background: var(--ga-surface);
  border-right: 1px solid var(--ga-border);
  position: fixed; top: 0; left: 0; z-index: 100;
  transition: transform .3s cubic-bezier(.4, 0, .2, 1);
  overflow-y: scroll; overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  box-shadow: 4px 0 24px rgba(0, 0, 0, .3);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.sidebar::-webkit-scrollbar { width: 0 !important; display: none !important; }

.sidebar-brand {
  padding: 1.5rem 1.25rem;
  border-bottom: 1px solid var(--ga-border);
}

.sidebar .nav-link {
  color: var(--ga-muted);
  padding: .65rem 1rem;
  border-radius: 10px;
  margin: .15rem .75rem;
  transition: var(--ga-transition);
  display: flex; align-items: center; gap: .7rem;
  font-size: .88rem; font-weight: 500;
  position: relative;
}

.sidebar .nav-link:hover {
  background: var(--ga-accent-glow);
  color: var(--ga-accent);
}

.sidebar .nav-link.active {
  background: var(--ga-accent-glow);
  color: var(--ga-accent);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--ga-accent);
}

.sidebar .nav-link i { font-size: 1.1rem; width: 1.3rem; text-align: center; }

.main-content {
  margin-left: 250px;
  padding: 1.5rem;
  min-height: 100vh;
}

.topbar {
  background: rgba(12, 18, 32, .8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ga-border);
  padding: .85rem 1.5rem;
  margin: -1.5rem -1.5rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 50;
}

/* ── Cards & Metrics ───────────────────────────────── */
.card-metric {
  background: var(--ga-card);
  border: 1px solid var(--ga-border);
  border-radius: var(--ga-radius);
  padding: 1.35rem;
  transition: var(--ga-transition);
  position: relative;
  overflow: hidden;
}

.card-metric::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, .3), transparent);
  opacity: 0; transition: opacity .3s;
}

.card-metric:hover {
  border-color: var(--ga-border-light);
  transform: translateY(-2px);
  box-shadow: var(--ga-shadow);
}

.card-metric:hover::before { opacity: 1; }

.metric-value {
  font-size: 2rem; font-weight: 700;
  background: linear-gradient(135deg, var(--ga-accent), var(--ga-accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1.2;
}

.metric-label {
  color: var(--ga-muted); font-size: .82rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: .04em;
  margin-top: .25rem;
}

/* ── Tables ────────────────────────────────────────── */
.table-dark-custom {
  --bs-table-bg: transparent;
  --bs-table-border-color: var(--ga-border);
  font-size: .88rem;
}

.table-dark-custom thead th {
  background: var(--ga-surface);
  color: var(--ga-muted);
  font-weight: 600; font-size: .75rem;
  text-transform: uppercase; letter-spacing: .06em;
  padding: .85rem 1rem;
  border-bottom: 2px solid var(--ga-border);
}

.table-dark-custom tbody tr {
  transition: background .15s;
}

.table-dark-custom tbody tr:hover {
  background: rgba(59, 130, 246, .04);
}

.table-dark-custom td {
  padding: .8rem 1rem;
  vertical-align: middle;
  border-color: var(--ga-border);
}

/* ── Risk Badges ───────────────────────────────────── */
.badge-risk-HIGH { background: rgba(239, 68, 68, .12); color: #f87171; border: 1px solid rgba(239, 68, 68, .3); font-weight: 600; }
.badge-risk-MEDIUM { background: rgba(245, 158, 11, .12); color: #fbbf24; border: 1px solid rgba(245, 158, 11, .3); font-weight: 600; }
.badge-risk-LOW { background: rgba(16, 185, 129, .12); color: #34d399; border: 1px solid rgba(16, 185, 129, .3); font-weight: 600; }

/* ── Modals ────────────────────────────────────────── */
.modal-content {
  background: var(--ga-surface);
  border: 1px solid var(--ga-border);
  border-radius: var(--ga-radius-lg);
  box-shadow: var(--ga-shadow-lg);
}

.modal-header {
  border-bottom: 1px solid var(--ga-border);
  padding: 1.25rem 1.5rem;
}

.modal-body { padding: 1.5rem; }

.modal-footer {
  border-top: 1px solid var(--ga-border);
  padding: 1rem 1.5rem;
}

.modal-title { font-weight: 700; font-size: 1.1rem; }

/* ── Forms ─────────────────────────────────────────── */
.form-control, .form-select {
  background: var(--ga-card);
  border: 1px solid var(--ga-border);
  color: var(--ga-text);
  border-radius: 10px;
  padding: .6rem .9rem;
  transition: var(--ga-transition);
}

.form-control:focus, .form-select:focus {
  background: var(--ga-card);
  border-color: var(--ga-accent);
  color: var(--ga-text);
  box-shadow: 0 0 0 3px var(--ga-accent-glow);
}

.form-label {
  font-size: .85rem; font-weight: 600;
  color: var(--ga-text);
  margin-bottom: .35rem;
}

.form-text { color: var(--ga-muted); font-size: .8rem; }

/* ── Buttons ───────────────────────────────────────── */
.btn {
  border-radius: 10px;
  font-weight: 600;
  transition: var(--ga-transition);
  padding: .5rem 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--ga-accent), #2563eb);
  border: none;
  box-shadow: 0 2px 12px rgba(59, 130, 246, .25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  box-shadow: 0 4px 20px rgba(59, 130, 246, .35);
  transform: translateY(-1px);
}

.btn-outline-secondary {
  border-color: var(--ga-border-light);
  color: var(--ga-muted);
}

.btn-outline-secondary:hover {
  background: var(--ga-card);
  border-color: var(--ga-accent);
  color: var(--ga-accent);
}

.btn-outline-warning {
  border-color: rgba(245, 158, 11, .4);
  color: var(--ga-warning);
}

.btn-outline-warning:hover {
  background: rgba(245, 158, 11, .1);
  border-color: var(--ga-warning);
  color: var(--ga-warning);
}

.btn-outline-danger {
  border-color: rgba(239, 68, 68, .3);
  color: var(--ga-danger);
}

.btn-outline-danger:hover {
  background: rgba(239, 68, 68, .1);
}

/* ── Badges ────────────────────────────────────────── */
.badge {
  font-weight: 600; font-size: .75rem;
  padding: .35em .7em;
  border-radius: 6px;
}

.badge.bg-success { background: rgba(16, 185, 129, .15) !important; color: #34d399; }
.badge.bg-warning { background: rgba(245, 158, 11, .15) !important; color: #fbbf24; }
.badge.bg-danger { background: rgba(239, 68, 68, .15) !important; color: #f87171; }
.badge.bg-info { background: rgba(59, 130, 246, .15) !important; color: #60a5fa; }
.badge.bg-secondary { background: rgba(148, 163, 184, .12) !important; color: #94a3b8; }

/* ── AI Messages ───────────────────────────────────── */
.ai-message {
  background: linear-gradient(135deg, rgba(59, 130, 246, .06), rgba(139, 92, 246, .06));
  border: 1px solid rgba(139, 92, 246, .2);
  border-radius: var(--ga-radius);
  padding: 1.15rem;
  position: relative;
}

.ai-message::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, .4), transparent);
}

/* ── Toasts ────────────────────────────────────────── */
#toast-container {
  position: fixed; top: 1rem; right: 1rem; z-index: 9999;
  display: flex; flex-direction: column; gap: .5rem;
}

.ga-toast {
  padding: .85rem 1.25rem;
  border-radius: 10px;
  min-width: 300px;
  font-size: .88rem; font-weight: 500;
  animation: slideIn .3s cubic-bezier(.4, 0, .2, 1);
  pointer-events: none;
  backdrop-filter: blur(12px);
}

.ga-toast.success {
  background: rgba(6, 78, 59, .9);
  border: 1px solid rgba(16, 185, 129, .4);
  color: #6ee7b7;
}

.ga-toast.error {
  background: rgba(127, 29, 29, .9);
  border: 1px solid rgba(239, 68, 68, .4);
  color: #fca5a5;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ── QR ────────────────────────────────────────────── */
.qr-container { text-align: center; padding: 1.5rem; }
.qr-container img {
  border: 3px solid var(--ga-accent);
  border-radius: var(--ga-radius);
  max-width: 220px;
  box-shadow: 0 0 30px rgba(59, 130, 246, .15);
}

/* ── Sidebar nav sections ──────────────────────────── */
.nav-section-label {
  font-size: .68rem; font-weight: 700;
  color: var(--ga-muted);
  text-transform: uppercase;
  letter-spacing: .12em;
  padding: .75rem 1.25rem .3rem;
  opacity: .7;
}

/* ── Risk bars ─────────────────────────────────────── */
.risk-bar {
  height: 6px; border-radius: 3px;
  background: var(--ga-border);
  overflow: hidden;
}

.risk-fill {
  height: 100%; border-radius: 3px;
  transition: width .5s cubic-bezier(.4, 0, .2, 1);
}

/* ── Scanner ───────────────────────────────────────── */
#scanner-video {
  width: 100%; border-radius: 10px;
  border: 2px solid var(--ga-accent);
  box-shadow: 0 0 20px rgba(59, 130, 246, .1);
}

/* ── Theme swatches ────────────────────────────────── */
.theme-swatch {
  width: 34px; height: 34px;
  border-radius: 50%; cursor: pointer;
  border: 3px solid transparent;
  transition: var(--ga-transition);
  box-shadow: 0 2px 8px rgba(0, 0, 0, .3);
}

.theme-swatch.selected, .theme-swatch:hover {
  border-color: white;
  transform: scale(1.15);
}

/* ── Alerts ────────────────────────────────────────── */
.alert {
  border-radius: 10px;
  border: 1px solid;
  font-size: .9rem;
}

.alert-info {
  background: rgba(59, 130, 246, .08);
  border-color: rgba(59, 130, 246, .2);
  color: #93c5fd;
}

.alert-warning {
  background: rgba(245, 158, 11, .08);
  border-color: rgba(245, 158, 11, .2);
  color: #fcd34d;
}

.alert-danger {
  background: rgba(239, 68, 68, .08);
  border-color: rgba(239, 68, 68, .2);
  color: #fca5a5;
}

.alert-secondary {
  background: rgba(148, 163, 184, .06);
  border-color: rgba(148, 163, 184, .15);
  color: var(--ga-muted);
}

/* ── Page headings ─────────────────────────────────── */
h5, h6 {
  font-weight: 700;
  letter-spacing: -.01em;
}

#sidebar-nav { padding-bottom: 2rem !important; }

/* ── Responsive ────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); height: 100vh; height: 100dvh; }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .topbar { position: sticky; top: 0; }
  .card-metric { padding: 1rem; }
  .login-card { margin: 1rem; padding: 2rem; }
}

/* ═══════════════════════════════════════════════════════════
   Light Mode Overrides
   ═══════════════════════════════════════════════════════════ */
:root[data-theme="light"] .badge.bg-success { background: rgba(16, 185, 129, .12) !important; color: #047857; }
:root[data-theme="light"] .badge.bg-warning { background: rgba(245, 158, 11, .12) !important; color: #92400e; }
:root[data-theme="light"] .badge.bg-danger { background: rgba(239, 68, 68, .12) !important; color: #b91c1c; }
:root[data-theme="light"] .badge.bg-info { background: rgba(59, 130, 246, .12) !important; color: #1d4ed8; }
:root[data-theme="light"] .badge.bg-secondary { background: rgba(100, 116, 139, .1) !important; color: #475569; }
:root[data-theme="light"] .ga-toast.success { background: rgba(236, 253, 245, .95); border-color: rgba(16, 185, 129, .4); color: #065f46; }
:root[data-theme="light"] .ga-toast.error { background: rgba(254, 242, 242, .95); border-color: rgba(239, 68, 68, .4); color: #991b1b; }
:root[data-theme="light"] .alert-info { background: rgba(59, 130, 246, .06); color: #1e40af; }
:root[data-theme="light"] .alert-warning { background: rgba(245, 158, 11, .06); color: #92400e; }
:root[data-theme="light"] .alert-danger { background: rgba(239, 68, 68, .06); color: #991b1b; }
:root[data-theme="light"] .sidebar { background: #ffffff; box-shadow: 2px 0 12px rgba(0,0,0,.06); }
:root[data-theme="light"] .theme-swatch:hover, :root[data-theme="light"] .theme-swatch.selected { border-color: #1e293b; }
:root[data-theme="light"] .badge-risk-HIGH { color: #b91c1c; }
:root[data-theme="light"] .badge-risk-MEDIUM { color: #92400e; }
:root[data-theme="light"] .badge-risk-LOW { color: #047857; }

/* Auto mode light overrides (duplicate for @media) */
@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] .badge.bg-success { background: rgba(16, 185, 129, .12) !important; color: #047857; }
  :root[data-theme="auto"] .badge.bg-warning { background: rgba(245, 158, 11, .12) !important; color: #92400e; }
  :root[data-theme="auto"] .badge.bg-danger { background: rgba(239, 68, 68, .12) !important; color: #b91c1c; }
  :root[data-theme="auto"] .badge.bg-info { background: rgba(59, 130, 246, .12) !important; color: #1d4ed8; }
  :root[data-theme="auto"] .badge.bg-secondary { background: rgba(100, 116, 139, .1) !important; color: #475569; }
  :root[data-theme="auto"] .ga-toast.success { background: rgba(236, 253, 245, .95); border-color: rgba(16, 185, 129, .4); color: #065f46; }
  :root[data-theme="auto"] .ga-toast.error { background: rgba(254, 242, 242, .95); border-color: rgba(239, 68, 68, .4); color: #991b1b; }
  :root[data-theme="auto"] .alert-info { background: rgba(59, 130, 246, .06); color: #1e40af; }
  :root[data-theme="auto"] .alert-warning { background: rgba(245, 158, 11, .06); color: #92400e; }
  :root[data-theme="auto"] .alert-danger { background: rgba(239, 68, 68, .06); color: #991b1b; }
  :root[data-theme="auto"] .sidebar { background: #ffffff; box-shadow: 2px 0 12px rgba(0,0,0,.06); }
  :root[data-theme="auto"] .theme-swatch:hover, :root[data-theme="auto"] .theme-swatch.selected { border-color: #1e293b; }
  :root[data-theme="auto"] .badge-risk-HIGH { color: #b91c1c; }
  :root[data-theme="auto"] .badge-risk-MEDIUM { color: #92400e; }
  :root[data-theme="auto"] .badge-risk-LOW { color: #047857; }
}