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

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #1f2937;
    --light: #f3f4f6;
    --border: #e5e7eb;
    --text: #374151;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--light);
    color: var(--text);
    line-height: 1.6;
}

/* Login Page */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

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

.logo h1 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 5px;
}

.logo p {
    color: var(--text);
    font-size: 0.9rem;
}

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

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

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.error-message {
    background: #fee2e2;
    color: var(--danger);
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.login-footer {
    margin-top: 20px;
    text-align: center;
    color: #6b7280;
    font-size: 0.85rem;
}

.login-footer code {
    background: var(--light);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: monospace;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

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

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

.btn-block {
    width: 100%;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* Navbar */
.navbar {
    background: white;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.nav-brand h2 {
    color: var(--primary);
    font-size: 1.3rem;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-user span {
    font-weight: 500;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.dashboard-header h1 {
    color: var(--dark);
}

/* Stats Cards */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    border-left: 4px solid var(--primary);
}

.stat-card-success {
    border-left-color: var(--success);
}

.stat-card-danger {
    border-left-color: var(--danger);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--dark);
}

.stat-label {
    color: #6b7280;
    font-size: 0.9rem;
    margin-top: 5px;
}

/* Server Grid */
.server-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.server-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.server-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.server-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.server-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
}

.status-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
}

.status-online {
    background: #d1fae5;
    color: var(--success);
}

.status-offline {
    background: #fee2e2;
    color: var(--danger);
}

.server-description {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.server-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border);
}

.server-type {
    font-size: 0.85rem;
    color: #9ca3af;
}

.server-port {
    font-family: monospace;
    background: var(--light);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
}

.modal-content {
    background: white;
    margin: 50px auto;
    padding: 30px;
    max-width: 800px;
    border-radius: 12px;
    position: relative;
    max-height: 85vh;
    overflow-y: auto;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
}

.close:hover {
    color: var(--dark);
}

/* Guide Styles */
.guide-content {
    margin-top: 20px;
}

.guide-steps {
    margin-top: 20px;
}

.guide-step {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border);
}

.guide-step:last-child {
    border-bottom: none;
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

.step-content h4 {
    margin-bottom: 10px;
    color: var(--dark);
}

.step-content p {
    margin-bottom: 10px;
    color: var(--text);
}

.step-content pre {
    background: #1f2937;
    color: #f3f4f6;
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 10px 0;
}

.step-content code {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

p code {
    background: var(--light);
    padding: 2px 6px;
    border-radius: 3px;
    color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .server-grid {
        grid-template-columns: 1fr;
    }
    
    .guide-step {
        flex-direction: column;
    }
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin: 20px 0;
    border-bottom: 2px solid var(--border);
}

.tab-btn {
    padding: 12px 24px;
    border: none;
    background: transparent;
    color: var(--text);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    font-weight: 500;
    transition: all 0.3s;
}

.tab-btn:hover {
    color: var(--primary);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
    padding: 20px 0;
}

.tab-content.active {
    display: block;
}

/* Modal sizes */
.modal-large .modal-content {
    max-width: 900px;
}

/* Info boxes */
.info-box {
    background: #eff6ff;
    border-left: 4px solid var(--primary);
    padding: 15px 20px;
    margin: 20px 0;
    border-radius: 6px;
}

.info-box-success {
    background: #f0fdf4;
    border-left-color: var(--success);
}

.info-box strong {
    color: var(--dark);
    display: block;
    margin-bottom: 8px;
}

.info-box ul {
    margin: 10px 0;
    padding-left: 20px;
}

.info-box li {
    margin: 5px 0;
}

/* Guide improvements */
.guide-step {
    background: #f9fafb;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.guide-step .step-number {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.guide-step .step-content h4 {
    color: var(--primary);
}

/* Code blocks in steps */
.step-content pre {
    margin-top: 12px;
}

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

table td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

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

/* Syntax highlighting hints */
.step-content code {
    color: #e11d48;
}

pre code {
    color: #f3f4f6;
}