/* Global Styles */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --border-color: #334155;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

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

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

/* Screen Management */
.screen {
    display: none !important;
    visibility: hidden;
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    pointer-events: none;
}

.screen.active {
    display: block !important;
    visibility: visible;
    opacity: 1;
    position: relative;
    pointer-events: auto;
}

/* Login Screen */
#login-screen {
    min-height: 100vh;
    display: flex !important;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

#login-screen.active {
    position: fixed !important;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 1000;
}

.login-container {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 1.875rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.login-form {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.2s;
}

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

.error-message {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: rgba(239, 68, 68, 0.1);
    border-radius: 6px;
    display: none;
}

.error-message.show {
    display: block;
}

.login-footer {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.security-notice {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Dashboard Header */
.dashboard-header {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.server-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--secondary-color);
    animation: pulse 2s infinite;
}

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

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

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.user-info {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Navigation */
.dashboard-nav {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    display: flex;
    gap: 1rem;
    overflow-x: auto;
}

.nav-tab {
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.nav-tab:hover {
    color: var(--text-color);
}

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

/* Dashboard Content */
.dashboard-content {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.tab-content {
    display: none;
}

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

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.metric-header h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-icon {
    font-size: 1.5rem;
}

.metric-value {
    margin-bottom: 0.5rem;
}

.large-number {
    font-size: 2.5rem;
    font-weight: 700;
}

.metric-unit {
    font-size: 1rem;
    color: var(--text-muted);
}

.metric-details {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.metric-bar {
    height: 6px;
    background: var(--bg-color);
    border-radius: 3px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: var(--success-color);
    transition: width 0.3s, background-color 0.3s;
}

.bar-fill.warning {
    background: var(--warning-color);
}

.bar-fill.danger {
    background: var(--danger-color);
}

/* Sections */
.section {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.section h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.section-header h2 {
    margin-bottom: 0;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Base button - all buttons use hollow style */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.btn-sm:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-1px);
}

/* Color variants - use border and text color only */
.btn-sm.btn-primary-color {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-sm.btn-primary-color:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
}

.btn-sm.btn-danger-color {
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.btn-sm.btn-danger-color:hover {
    background: rgba(239, 68, 68, 0.1);
}

.btn-sm.btn-success-color {
    border-color: var(--success-color);
    color: var(--success-color);
}

.btn-sm.btn-success-color:hover {
    background: rgba(34, 197, 94, 0.1);
}

/* Larger buttons - same hollow style */
.btn-primary, .btn-secondary, .btn-action {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

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

.btn-primary:hover {
    background: rgba(37, 99, 235, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.btn-secondary {
    border-color: var(--border-color);
    color: var(--text-color);
}

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

.btn-action {
    border-color: var(--border-color);
    color: var(--text-color);
}

.btn-action:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Disabled state */
.btn-sm:disabled, .btn-primary:disabled, .btn-secondary:disabled, .btn-action:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.data-table thead {
    background: var(--bg-color);
}

.data-table th {
    padding: 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.data-table td {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

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

.data-table .loading {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-online {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.status-stopped {
    background: rgba(100, 116, 139, 0.2);
    color: var(--secondary-color);
}

.status-error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

/* Form Card */
.form-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-card h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.input-with-suffix {
    display: flex;
    align-items: center;
}

.input-with-suffix input {
    flex: 1;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-suffix {
    padding: 0.75rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-left: none;
    border-top-right-radius: 6px;
    border-bottom-right-radius: 6px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* Monitoring Links */
.monitoring-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.monitoring-card {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.2s;
    position: relative;
}

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

.monitoring-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.monitoring-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.link-arrow {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* Iframe Container */
.iframe-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background: var(--bg-color);
    border-radius: 8px;
    overflow: hidden;
}

.iframe-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Responsive Design */
@media (max-width: 768px) {
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .header-right {
        width: 100%;
        justify-content: space-between;
    }

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

    .action-buttons {
        flex-direction: column;
    }

    .btn-action {
        width: 100%;
    }

    .monitoring-links {
        grid-template-columns: 1fr;
    }
}