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

:root {
    --primary: #5865f2;
    --primary-dark: #4752c4;
    --secondary: #57f287;
    --danger: #ed4245;
    --warning: #fee75c;
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --border-color: #30363d;
    --card-bg: #161b22;
    --hover-bg: #1f2328;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: var(--bg-primary);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    background: linear-gradient(135deg, #0d1117 0%, #161b22 50%, #0d1117 100%);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(88, 101, 242, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(87, 242, 135, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.login-container {
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

.login-box {
    background: var(--bg-secondary);
    padding: 48px 40px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.login-box h1 {
    color: var(--text-primary);
    margin-bottom: 8px;
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-box h2 {
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 400;
    margin-bottom: 32px;
    text-align: center;
}

.error-message {
    background: rgba(237, 66, 69, 0.1);
    color: #ff6b6b;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 24px;
    border: 1px solid rgba(237, 66, 69, 0.3);
    font-size: 14px;
}

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

.login-form label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.login-form input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-primary);
    transition: all 0.2s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(88, 101, 242, 0.1);
}

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

/* Navbar */
.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0;
    margin-bottom: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar h1 {
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-user span {
    color: var(--text-secondary);
    font-size: 14px;
}

.nav-user span strong {
    color: var(--text-primary);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px 24px 48px;
}

.container h2 {
    color: var(--text-primary);
    margin-bottom: 24px;
    font-size: 28px;
    font-weight: 600;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(88, 101, 242, 0.3);
}

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

.btn-secondary:hover {
    background: var(--hover-bg);
    border-color: var(--primary);
}

.btn-admin {
    background: var(--secondary);
    color: var(--bg-primary);
}

.btn-admin:hover {
    background: #4ae077;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(87, 242, 135, 0.3);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #c03537;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(237, 66, 69, 0.3);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Servers Grid */
.servers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.server-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border-color);
    position: relative;
    transition: all 0.3s;
    overflow: hidden;
}

.server-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--danger);
    transition: all 0.3s;
}

.server-card.online::before {
    background: var(--secondary);
    box-shadow: 0 0 10px rgba(87, 242, 135, 0.5);
}

.server-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border-color: var(--primary);
}

.server-status-indicator {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--danger);
    animation: pulse 2s infinite;
}

.server-card.online .server-status-indicator {
    background: var(--secondary);
    box-shadow: 0 0 10px rgba(87, 242, 135, 0.6);
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.server-info h3 {
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 20px;
    font-weight: 600;
}

.server-address {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 16px;
    font-family: 'Courier New', monospace;
}

.server-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.status-badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    width: fit-content;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-online {
    background: rgba(87, 242, 135, 0.15);
    color: var(--secondary);
    border: 1px solid rgba(87, 242, 135, 0.3);
}

.status-offline {
    background: rgba(237, 66, 69, 0.15);
    color: #ff6b6b;
    border: 1px solid rgba(237, 66, 69, 0.3);
}

.server-stats {
    display: flex;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 4px;
}

.server-stats span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.no-servers {
    text-align: center;
    padding: 80px 20px;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.no-servers p {
    margin-bottom: 24px;
    font-size: 16px;
}

/* Admin Page */
.admin-sections {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.admin-section {
    background: var(--card-bg);
    padding: 32px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.admin-section h2 {
    color: var(--text-primary);
    margin-bottom: 24px;
    font-size: 24px;
    font-weight: 600;
}

.admin-card {
    margin-bottom: 32px;
}

.admin-card:last-child {
    margin-bottom: 0;
}

.admin-card h3 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: 600;
}

.admin-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.admin-form .form-group {
    display: flex;
    flex-direction: column;
}

.admin-form label {
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.admin-form input {
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-primary);
    transition: all 0.2s;
}

.admin-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(88, 101, 242, 0.1);
}

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

.admin-form button {
    align-self: end;
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-tertiary);
}

.admin-table thead {
    background: var(--bg-secondary);
}

.admin-table th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 14px;
}

.admin-table tbody tr {
    transition: background 0.2s;
}

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

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

.text-muted {
    color: var(--text-secondary);
    font-style: italic;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

.modal-content h2 {
    color: var(--text-primary);
    margin-bottom: 12px;
    font-size: 24px;
    font-weight: 600;
}

.modal-body {
    margin-bottom: 24px;
}

.modal-subtitle {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 14px;
}

.user-association-item {
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    transition: all 0.2s;
    background: var(--bg-tertiary);
}

.user-association-item:hover {
    border-color: var(--primary);
    background: var(--hover-bg);
}

.user-association-item.selected {
    border-color: var(--secondary);
    background: rgba(87, 242, 135, 0.1);
}

.user-association-item:last-child {
    margin-bottom: 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    width: 100%;
    margin: 0;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    margin-right: 12px;
    position: relative;
    flex-shrink: 0;
    transition: all 0.2s;
    background: var(--bg-secondary);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--secondary);
    border-color: var(--secondary);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg-primary);
    font-size: 14px;
    font-weight: bold;
}

.user-info {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.user-info strong {
    color: var(--text-primary);
    margin-bottom: 4px;
}

.user-email {
    color: var(--text-secondary);
    font-size: 13px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 16px;
        padding: 16px;
    }

    .nav-user {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }

    .servers-grid {
        grid-template-columns: 1fr;
    }

    .admin-form {
        grid-template-columns: 1fr;
    }

    .table-container {
        overflow-x: scroll;
    }

    .modal-content {
        width: 95%;
        padding: 24px;
    }

    .container {
        padding: 24px 16px 32px;
    }
}