/* ════════════════════════════════════════════════════════
   AXIOM — Design System
   Premium dark theme with cool silver-blue accents
   ════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #0a0f14;
    --bg-secondary: #0f1920;
    --bg-card: #131f28;
    --bg-card-hover: #182a36;
    --bg-input: #0d161d;
    --border: #1e3040;
    --border-focus: #7eb8e0;
    --gold: #7eb8e0;
    --gold-dim: #5a9fc7;
    --gold-glow: rgba(126, 184, 224, 0.15);
    --gold-glow-strong: rgba(126, 184, 224, 0.3);
    --text-primary: #e8edf2;
    --text-secondary: #8899a8;
    --text-muted: #5a6d7e;
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --info: #60a5fa;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-gold: 0 0 20px rgba(126,184,224,0.1);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ── Utilities ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: 8px; }
.gap-md { gap: 16px; }
.gap-lg { gap: 24px; }
.text-center { text-align: center; }
.text-gold { color: var(--gold); }
.text-muted { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 32px; }
.mb-md { margin-bottom: 16px; }
.hidden { display: none !important; }

/* ── Login Page ── */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(126,184,224,0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(126,184,224,0.03) 0%, transparent 40%),
        var(--bg-primary);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 48px 40px;
    box-shadow: var(--shadow), var(--shadow-gold);
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.auth-logo {
    text-align: center;
    margin-bottom: 8px;
}

.auth-logo h1 {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: 6px;
    color: var(--gold);
}

.auth-logo p {
    font-size: 13px;
    color: var(--text-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.auth-tabs {
    display: flex;
    gap: 4px;
    margin: 32px 0 24px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    padding: 4px;
}

.auth-tab {
    flex: 1;
    padding: 10px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
}

.auth-tab.active {
    background: var(--bg-card);
    color: var(--gold);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.auth-tab:hover:not(.active) { color: var(--text-primary); }

/* ── Forms ── */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px var(--gold-glow);
}

.form-input::placeholder { color: var(--text-muted); }

.form-select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    outline: none;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238899a8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

.form-select:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px var(--gold-glow);
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, var(--gold), var(--gold-dim));
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(126,184,224,0.2);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(126,184,224,0.35);
}

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

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
}
.btn-outline:hover { background: var(--gold-glow); }

/* ── Error/Success Messages ── */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 16px;
    display: none;
}
.alert-error { background: rgba(248,113,113,0.1); border: 1px solid rgba(248,113,113,0.3); color: var(--danger); }
.alert-success { background: rgba(52,211,153,0.1); border: 1px solid rgba(52,211,153,0.3); color: var(--success); }
.alert.show { display: block; }

/* ── Auth Footer ── */
.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 13px;
    color: var(--text-muted);
}
.auth-footer a { color: var(--gold); text-decoration: none; }
.auth-footer a:hover { text-decoration: underline; }

/* ════════════════════════════════════════════════════════
   DASHBOARD LAYOUT
   ════════════════════════════════════════════════════════ */

.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 24px 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-logo {
    padding: 0 24px;
    margin-bottom: 32px;
}

.sidebar-logo h1 {
    font-size: 22px;
    letter-spacing: 4px;
    color: var(--gold);
    font-weight: 700;
}

.sidebar-logo span {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav { flex: 1; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(126,184,224,0.05);
}

.nav-item.active {
    color: var(--gold);
    background: rgba(126,184,224,0.08);
    border-left-color: var(--gold);
}

.nav-item .icon { font-size: 18px; width: 24px; text-align: center; }

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold), var(--gold-dim));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--bg-primary);
    font-size: 14px;
}

.user-name { font-size: 14px; font-weight: 500; }
.user-email { font-size: 12px; color: var(--text-muted); }

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 32px;
}

/* ── Page Header ── */
.page-header {
    margin-bottom: 32px;
}

.page-header h2 {
    font-size: 24px;
    font-weight: 600;
}

.page-header p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ── Stat Cards ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--gold);
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--gold);
}

.stat-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ── Cards ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3 { font-size: 16px; font-weight: 600; }

.card-body { padding: 24px; }

/* ── Tables ── */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 14px 16px;
    font-size: 14px;
    border-bottom: 1px solid rgba(30,48,64,0.5);
}

.data-table tr:hover td { background: rgba(126,184,224,0.03); }

/* ── Badges ── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 99px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success { background: rgba(52,211,153,0.15); color: var(--success); }
.badge-warning { background: rgba(251,191,36,0.15); color: var(--warning); }
.badge-info { background: rgba(96,165,250,0.15); color: var(--info); }
.badge-gold { background: var(--gold-glow); color: var(--gold); }

/* ── Invite Link Box ── */
.invite-box {
    background: var(--bg-input);
    border: 1px dashed var(--gold);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
}

.invite-link {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
}

.invite-link input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: monospace;
    font-size: 13px;
    outline: none;
}

/* ── Empty State ── */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state .icon { font-size: 48px; margin-bottom: 16px; }
.empty-state h3 { font-size: 18px; color: var(--text-secondary); margin-bottom: 8px; }
.empty-state p { font-size: 14px; }

/* ── Loading spinner ── */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}

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

/* ── Responsive ── */
@media (max-width: 768px) {
    .sidebar { width: 0; overflow: hidden; }
    .main-content { margin-left: 0; }
    .auth-card { margin: 16px; padding: 32px 24px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}