:root {
    --primary: #8a2be2;
    --secondary: #ff0080;
    --dark: #0a0a0f;
    --darker: #050508;
    --card-bg: rgba(255, 255, 255, 0.03);
    --border: rgba(255, 255, 255, 0.1);
    --text: #ffffff;
    --text-muted: #a0a0b0;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
    background: var(--dark);
    color: var(--text);
    min-height: 100vh;
    background-image: radial-gradient(circle at 20% 30%, rgba(138, 43, 226, 0.15) 0%, transparent 25%), radial-gradient(circle at 80% 70%, rgba(255, 0, 128, 0.1) 0%, transparent 25%);
}

.dashboard-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(15px);
    border-right: 1px solid var(--border);
    padding: 25px 0;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.logo {
    padding: 0 20px 25px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 25px;
}

.logo i {
    font-size: 28px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo h1 {
    font-size: 22px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin: 10px 0 5px;
}

.logo p {
    color: var(--text-muted);
    font-size: 14px;
}

.nav-menu {
    padding: 0 15px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 10px;
    margin-bottom: 8px;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    border-color: var(--border);
}

.nav-item.active {
    background: rgba(138, 43, 226, 0.15);
    color: var(--primary);
    border-color: rgba(138, 43, 226, 0.3);
}

.nav-icon {
    font-size: 18px;
    width: 22px;
    text-align: center;
}

.user-profile {
    position: absolute;
    bottom: 25px;
    left: 15px;
    right: 15px;
    padding: 18px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid var(--border);
}

.user-avatar {
    width: 45px;
    height: 45px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    margin-bottom: 12px;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 25px;
}

.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 35px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.header-title {
    font-size: 26px;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.header-actions {
    display: flex;
    gap: 12px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 35px;
}

.stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 25px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: rgba(138, 43, 226, 0.4);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    border: 1px solid var(--border);
}

.stat-icon i {
    font-size: 26px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    margin: 8px 0;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat-label {
    color: var(--text-muted);
    font-size: 15px;
}

.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-box {
    width: 100%;
    max-width: 420px;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.auth-subtitle {
    color: var(--text-muted);
    font-size: 15px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text);
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 15px;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(138, 43, 226, 0.2);
}

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

.btn {
    padding: 14px 28px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(138, 43, 226, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 8px;
}

.data-table {
    width: 100%;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    margin-bottom: 25px;
}

.table-header {
    background: rgba(255, 255, 255, 0.05);
    padding: 22px 25px;
    border-bottom: 1px solid var(--border);
}

.table-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.table-body {
    padding: 0;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    padding: 18px 25px;
    text-align: right;
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
}

.table td {
    padding: 18px 25px;
    border-bottom: 1px solid var(--border);
}

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

.table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.badge {
    padding: 5px 14px;
    border-radius: 18px;
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-error {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-info {
    background: rgba(59, 130, 246, 0.15);
    color: var(--info);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.tunnel-url {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.05);
    padding: 14px 18px;
    border-radius: 10px;
    margin: 15px 0;
    border: 1px solid var(--border);
}

.tunnel-url a {
    color: var(--primary);
    text-decoration: none;
    font-family: monospace;
    font-size: 15px;
    flex: 1;
}

.tunnel-url a:hover {
    text-decoration: underline;
}

.copy-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 5px;
}

.copy-btn:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.1);
}

.alert {
    padding: 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    border: 1px solid;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--error);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--dark);
    border: 1px solid var(--border);
    border-radius: 16px;
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 22px 25px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 700;
}

.modal-body {
    padding: 25px;
}

.modal-footer {
    padding: 18px 25px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
    .main-content {
        margin-left: 240px;
    }
}

@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
    }
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        padding: 20px;
    }
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .auth-box {
        margin: 20px;
        padding: 30px;
    }
    .table {
        display: block;
        overflow-x: auto;
    }
    .header-bar {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    .header-actions {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 15px;
    }
    .stat-card {
        padding: 20px;
    }
    .auth-box {
        padding: 25px;
    }
    .table th, .table td {
        padding: 12px 15px;
    }
}