:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-card: #1a1a1a;
    --bg-hover: #242424;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #6b7280;
    --accent: #1DB954;
    --accent-hover: #1ed760;
    --accent-dim: rgba(29, 185, 84, 0.1);
    --border: #282828;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #1DB954;
    --info: #3b82f6;
    --sidebar-width: 250px;
    --topbar-height: 60px;
    --radius: 10px;
}

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

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

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0; top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform .3s;
}

.sidebar-brand {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border);
}

.sidebar-brand h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-nav {
    padding: 12px 10px;
    flex: 1;
    overflow-y: auto;
}

.sidebar-nav .nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all .2s;
    margin-bottom: 2px;
}

.sidebar-nav .nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.sidebar-nav .nav-item.active {
    background: var(--accent-dim);
    color: var(--accent);
}

.sidebar-footer {
    padding: 12px 10px;
    border-top: 1px solid var(--border);
}

.sidebar-footer .nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    transition: all .2s;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

/* Main content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.topbar {
    height: var(--topbar-height);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar h1 {
    font-size: 16px;
    font-weight: 600;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
}

.content-area {
    padding: 24px;
}

/* Cards */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all .2s;
}

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

.stat-card .stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    margin-bottom: 12px;
}

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

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

.table {
    color: var(--text-primary);
    margin: 0;
}

.table thead th {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 12px 16px;
    white-space: nowrap;
}

.table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    vertical-align: middle;
}

.table tbody tr:hover {
    background: var(--bg-hover);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Buttons */
.btn-accent {
    background: var(--accent);
    color: #000;
    border: none;
    font-weight: 600;
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 14px;
    transition: all .2s;
}

.btn-accent:hover {
    background: var(--accent-hover);
    color: #000;
    transform: translateY(-1px);
}

.btn-dark {
    background: var(--bg-hover);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 14px;
    transition: all .2s;
}

.btn-dark:hover {
    background: var(--border);
    color: var(--text-primary);
}

/* Forms */
.form-control, .form-select {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
}

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

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

.form-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

/* Modal */
.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.modal-header {
    border-bottom: 1px solid var(--border);
    padding: 16px 20px;
}

.modal-title {
    font-size: 16px;
    font-weight: 600;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    border-top: 1px solid var(--border);
    padding: 12px 20px;
}

.btn-close {
    filter: invert(1);
}

/* Badge */
.badge {
    font-size: 11px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
}

/* Animations */
.fade-in {
    animation: fadeIn .3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .sidebar-overlay.active {
        display: block;
    }
    .sidebar-toggle {
        display: block;
    }
    .main-content {
        margin-left: 0;
    }
    .content-area {
        padding: 16px;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* Utilities */
.text-accent { color: var(--accent) !important; }
.bg-accent-dim { background: var(--accent-dim) !important; }
.border-accent { border-color: var(--accent) !important; }

/* SP_DC display */
.sp-dc-cell {
    font-family: 'Courier New', monospace;
    font-size: 12px;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-muted);
}

.sp-dc-cell:hover {
    color: var(--accent);
    cursor: pointer;
}

/* Copy button */
.btn-copy {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 12px;
    cursor: pointer;
    transition: all .2s;
}

.btn-copy:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Login page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-card .brand-logo {
    margin-bottom: 24px;
}

.login-card h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-card p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 24px;
}

.login-card .form-control {
    margin-bottom: 12px;
}

.login-card .btn-accent {
    width: 100%;
    padding: 12px;
    font-size: 15px;
    margin-top: 8px;
}

/* Result card (for copy) */
.result-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-top: 16px;
}

.result-card .result-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.result-card .result-row:last-child {
    border-bottom: none;
}

.result-card .result-label {
    font-size: 12px;
    color: var(--text-muted);
    min-width: 80px;
}

.result-card .result-value {
    font-size: 14px;
    font-weight: 500;
    flex: 1;
    margin: 0 12px;
    word-break: break-all;
}