/* BIS — Executive Brass/Gray/Black Theme */

:root {
    --brass:        #C9A94E;
    --brass-light:  #D4BC6A;
    --brass-dark:   #A68A3E;
    --brass-muted:  #B89F4A20;
    --charcoal:     #1E1E1E;
    --dark-bg:      #141414;
    --sidebar-bg:   #1A1A1A;
    --card-bg:      #242424;
    --card-border:  #333333;
    --mid-gray:     #4A4A4A;
    --text:         #E8E8E8;
    --text-muted:   #999999;
    --white:        #FFFFFF;
    --danger:       #C0392B;
    --danger-bg:    #C0392B20;
    --success:      #27AE60;
    --success-bg:   #27AE6020;
    --warning:      #E67E22;
    --warning-bg:   #E67E2220;
    --info:         #3498DB;
}

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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark-bg);
    color: var(--text);
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 24px 20px 20px;
    border-bottom: 1px solid var(--card-border);
    text-align: center;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--brass);
    letter-spacing: 4px;
}

.logo-sub {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 2px;
}

.logo-club {
    display: inline-block;
    font-size: 9px;
    color: var(--brass-dark);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-top: 6px;
    padding: 2px 8px;
    border: 1px solid var(--brass-dark);
    border-radius: 3px;
}

.nav-links {
    list-style: none;
    padding: 12px 0;
    flex: 1;
}

.nav-links a {
    display: block;
    padding: 10px 20px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-links a:hover {
    color: var(--text);
    background: var(--brass-muted);
    border-left-color: var(--brass-dark);
}

.nav-links a.active {
    color: var(--brass);
    background: var(--brass-muted);
    border-left-color: var(--brass);
}

.nav-icon {
    margin-right: 8px;
    font-size: 8px;
    vertical-align: middle;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.user-label {
    font-size: 12px;
    color: var(--text-muted);
    flex: 1;
}

/* Main Content */
.content {
    margin-left: 240px;
    padding: 32px;
    flex: 1;
    min-height: 100vh;
}

.content-full {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.page-header h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text);
}

.page-header h2 span {
    color: var(--brass);
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--card-border);
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--brass);
}

.stat-card .stat-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Chart Grid */
.chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.chart-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 20px;
}

.chart-card canvas {
    max-height: 300px;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead th {
    background: var(--sidebar-bg);
    color: var(--brass);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 10px 12px;
    text-align: left;
    border-bottom: 2px solid var(--brass-dark);
}

tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--card-border);
    color: var(--text);
}

tbody tr:hover {
    background: var(--brass-muted);
}

/* Status Badges */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-available { background: var(--success-bg); color: var(--success); }
.badge-rented { background: var(--warning-bg); color: var(--warning); }
.badge-broken { background: var(--danger-bg); color: var(--danger); }
.badge-reserve { background: #3498DB20; color: var(--info); }
.badge-tested { background: var(--success-bg); color: var(--success); }
.badge-untested { background: var(--warning-bg); color: var(--warning); }
.badge-toggle { cursor: pointer; border: none; font-family: inherit; transition: opacity 0.2s; }
.badge-toggle:hover { opacity: 0.7; }
.badge-returned { background: var(--success-bg); color: var(--success); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--brass);
    color: var(--charcoal);
}
.btn-primary:hover {
    background: var(--brass-light);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
}
.btn-outline:hover {
    border-color: var(--brass);
    color: var(--brass);
}

.btn-danger {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger);
}
.btn-danger:hover {
    background: var(--danger);
    color: var(--white);
}

.btn-sm {
    padding: 4px 10px;
    font-size: 11px;
}

.btn-group {
    display: flex;
    gap: 6px;
}

/* Forms */
.form-card {
    max-width: 560px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--dark-bg);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    color: var(--text);
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--brass);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-check input[type="checkbox"] {
    width: auto;
    accent-color: var(--brass);
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

/* Flash Messages */
.flash-container {
    margin-bottom: 20px;
}

.flash {
    padding: 12px 16px;
    border-radius: 6px;
    font-size: 14px;
    margin-bottom: 8px;
}

.flash-error {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger);
}

.flash-success {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success);
}

/* Auth Pages */
.auth-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.auth-container .logo {
    font-size: 36px;
    margin-bottom: 4px;
}

.auth-container .logo-sub {
    margin-bottom: 24px;
}

.auth-container .form-group {
    text-align: left;
}

/* Quarter Tabs */
.quarter-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.quarter-tab {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 12px;
    text-decoration: none;
    color: var(--text-muted);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    transition: all 0.2s;
}

.quarter-tab:hover {
    border-color: var(--brass);
    color: var(--brass);
}

.quarter-tab.active {
    background: var(--brass);
    color: var(--charcoal);
    border-color: var(--brass);
    font-weight: 600;
}

/* Utility */
.text-muted { color: var(--text-muted); }
.text-brass { color: var(--brass); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.text-right { text-align: right; }
.text-center { text-align: center; }

/* Responsive */
@media (max-width: 900px) {
    .chart-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        flex-direction: row;
        flex-wrap: wrap;
    }
    .sidebar-header { padding: 12px 16px; }
    .nav-links { display: flex; padding: 0; flex-wrap: wrap; }
    .nav-links a { padding: 8px 12px; border-left: none; border-bottom: 3px solid transparent; }
    .nav-links a.active { border-bottom-color: var(--brass); border-left: none; }
    .content { margin-left: 0; padding: 20px; }
}