:root {
    --bg-dark: #1a1a2e;
    --bg-card: #16213e;
    --bg-sidebar: #0f3460;
    --accent: #e94560;
    --accent-hover: #c73650;
    --text: #eee;
    --text-muted: #8899aa;
    --border: #233554;
    --green: #2ecc71;
    --red: #e74c3c;
    --yellow: #f1c40f;
    --blue: #3498db;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    min-height: 100vh;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--bg-sidebar);
    padding: 20px 0;
    flex-shrink: 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 10px;
}

.sidebar-header h2 {
    margin: 0;
    font-size: 18px;
    color: var(--accent);
}

.sidebar-header small {
    color: var(--text-muted);
    font-size: 12px;
}

.sidebar nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    color: var(--text);
    text-decoration: none;
    transition: background 0.2s;
    font-size: 14px;
}

.sidebar nav a:hover,
.sidebar nav a.active {
    background: rgba(255,255,255,0.1);
    text-decoration: none;
}

.sidebar nav a.active {
    border-left: 3px solid var(--accent);
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 15px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Main */
.main {
    flex: 1;
    margin-left: 240px;
    padding: 30px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.page-header h1 {
    margin: 0;
    font-size: 24px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
}

.card h3 {
    margin: 0 0 15px;
    font-size: 16px;
    color: var(--text-muted);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
}

.stat-card .number {
    font-size: 36px;
    font-weight: bold;
    display: block;
}

.stat-card .label {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 5px;
}

.stat-card.green .number { color: var(--green); }
.stat-card.red .number { color: var(--red); }
.stat-card.blue .number { color: var(--blue); }
.stat-card.yellow .number { color: var(--yellow); }

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

th, td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tr:hover {
    background: rgba(255,255,255,0.03);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge-green { background: rgba(46,204,113,0.2); color: var(--green); }
.badge-red { background: rgba(231,76,60,0.2); color: var(--red); }
.badge-yellow { background: rgba(241,196,15,0.2); color: var(--yellow); }
.badge-blue { background: rgba(52,152,219,0.2); color: var(--blue); }
.badge-gray { background: rgba(136,153,170,0.2); color: var(--text-muted); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
    text-decoration: none;
    color: white;
}

.btn:hover { text-decoration: none; filter: brightness(1.1); }
.btn-primary { background: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-green { background: var(--green); }
.btn-blue { background: var(--blue); }
.btn-red { background: var(--red); }
.btn-gray { background: #555; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-muted);
}

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

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

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

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

.form-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success { background: rgba(46,204,113,0.15); border: 1px solid var(--green); color: var(--green); }
.alert-error { background: rgba(231,76,60,0.15); border: 1px solid var(--red); color: var(--red); }

/* Key Display */
.license-key {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 16px;
    background: var(--bg-dark);
    padding: 8px 14px;
    border-radius: 6px;
    border: 1px solid var(--border);
    display: inline-block;
    letter-spacing: 1px;
    user-select: all;
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--bg-dark);
}

.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    width: 380px;
}

.login-box h1 {
    text-align: center;
    margin: 0 0 5px;
    color: var(--accent);
}

.login-box p {
    text-align: center;
    color: var(--text-muted);
    margin: 0 0 25px;
}

/* Detail Grid */
.detail-grid {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 8px 15px;
    font-size: 14px;
}

.detail-grid .label {
    color: var(--text-muted);
    font-weight: 500;
}

/* Action Bar */
.action-bar {
    display: flex;
    gap: 8px;
    margin-top: 15px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .main { margin-left: 0; }
    .form-row { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}