/* ===== CSS RESET & VARIABLES ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-elevated: #222230;
    --bg-hover: #2a2a3a;
    
    --accent-cyan: #00d4ff;
    --accent-cyan-dim: rgba(0, 212, 255, 0.15);
    --accent-green: #00ff88;
    --accent-green-dim: rgba(0, 255, 136, 0.15);
    --accent-red: #ff3366;
    --accent-red-dim: rgba(255, 51, 102, 0.15);
    --accent-yellow: #ffcc00;
    --accent-yellow-dim: rgba(255, 204, 0, 0.15);
    --accent-purple: #aa55ff;
    --accent-purple-dim: rgba(170, 85, 255, 0.15);
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-tertiary: #606070;
    
    --border-color: #2a2a3a;
    --border-glow: rgba(0, 212, 255, 0.3);
    
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.1);
    --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

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

html, body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-image: 
        radial-gradient(ellipse at 10% 20%, rgba(0, 212, 255, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 90% 80%, rgba(170, 85, 255, 0.03) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-primary) 0%, #08080c 100%);
    min-height: 100vh;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-cyan);
}

/* ===== LAYOUT ===== */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: 24px;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

/* ===== HEADER ===== */
.header {
    background: rgba(18, 18, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.logo-icon svg {
    color: var(--bg-primary);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--text-primary) 0%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.header-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.status-dot.connected {
    background: var(--accent-green);
    box-shadow: 0 0 10px var(--accent-green);
}

.status-dot.disconnected {
    background: var(--accent-red);
    box-shadow: 0 0 10px var(--accent-red);
}

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

/* ===== TABS ===== */
.tabs-container {
    display: flex;
    gap: 4px;
    background: var(--bg-secondary);
    padding: 6px;
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    width: fit-content;
}

.tab-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-button:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.tab-button.active {
    color: var(--accent-cyan);
    background: var(--bg-tertiary);
    box-shadow: inset 0 0 0 1px rgba(0, 212, 255, 0.3);
}

.tab-button svg {
    width: 18px;
    height: 18px;
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title svg {
    color: var(--accent-cyan);
}

/* ===== STATS GRID ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon.cyan {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
}

.stat-icon.green {
    background: var(--accent-green-dim);
    color: var(--accent-green);
}

.stat-icon.red {
    background: var(--accent-red-dim);
    color: var(--accent-red);
}

.stat-icon.yellow {
    background: var(--accent-yellow-dim);
    color: var(--accent-yellow);
}

.stat-icon.purple {
    background: var(--accent-purple-dim);
    color: var(--accent-purple);
}

.stat-info {
    flex: 1;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    font-family: var(--font-mono);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px var(--accent-cyan-dim);
}

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

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

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, #0099cc 100%);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--accent-cyan);
}

.btn-danger {
    background: var(--accent-red-dim);
    color: var(--accent-red);
    border: 1px solid rgba(255, 51, 102, 0.3);
}

.btn-danger:hover:not(:disabled) {
    background: var(--accent-red);
    color: white;
}

.btn-success {
    background: var(--accent-green-dim);
    color: var(--accent-green);
    border: 1px solid rgba(0, 255, 136, 0.3);
}

.btn-success:hover:not(:disabled) {
    background: var(--accent-green);
    color: var(--bg-primary);
}

.btn-warning {
    background: var(--accent-yellow-dim);
    color: var(--accent-yellow);
    border: 1px solid rgba(255, 204, 0, 0.3);
}

.btn-warning:hover:not(:disabled) {
    background: var(--accent-yellow);
    color: var(--bg-primary);
}

.btn-icon {
    padding: 10px;
    border-radius: var(--radius-sm);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
}

/* ===== SERVERS LIST ===== */
.servers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 16px;
}

.server-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.server-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.server-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.server-card:hover::before {
    opacity: 1;
}

.server-card.selected {
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-glow);
}

.server-card.selected::before {
    opacity: 1;
}

.server-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 12px;
}

.server-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.server-ip {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-cyan);
}

.server-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.server-status.active {
    background: var(--accent-green-dim);
    color: var(--accent-green);
}

.server-status.inactive {
    background: var(--accent-red-dim);
    color: var(--accent-red);
}

.server-meta {
    display: flex;
    gap: 16px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.server-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.server-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

/* ===== CONTAINERS TABLE ===== */
.containers-section {
    margin-top: 24px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.containers-table-wrapper {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

.containers-table th {
    background: var(--bg-tertiary);
    padding: 14px 16px;
    text-align: left;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.containers-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

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

.containers-table tr:hover td {
    background: var(--bg-tertiary);
}

.container-name {
    display: flex;
    align-items: center;
    gap: 10px;
}

.container-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-cyan-dim);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
}

.container-name-text {
    font-weight: 600;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.container-id {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

.container-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.container-status.running {
    background: var(--accent-green-dim);
    color: var(--accent-green);
}

.container-status.exited {
    background: var(--accent-red-dim);
    color: var(--accent-red);
}

.container-status.paused {
    background: var(--accent-yellow-dim);
    color: var(--accent-yellow);
}

.container-status.created {
    background: var(--accent-purple-dim);
    color: var(--accent-purple);
}

.container-ports {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-cyan);
}

.container-memory {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.container-size {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.container-actions {
    display: flex;
    gap: 6px;
}

/* ===== MODALS ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 24px;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-elevated);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    display: flex;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
}

/* ===== LOGS VIEWER ===== */
.logs-viewer {
    background: #000;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.7;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.logs-viewer .log-line {
    color: var(--text-secondary);
}

.logs-viewer .log-line.error {
    color: var(--accent-red);
}

.logs-viewer .log-line.warn {
    color: var(--accent-yellow);
}

.logs-viewer .log-line.info {
    color: var(--accent-cyan);
}

/* ===== LOADING & EMPTY STATES ===== */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

.empty-state-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.empty-state-text {
    color: var(--text-secondary);
    max-width: 300px;
}

/* ===== ALERTS ===== */
.alert {
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert-success {
    background: var(--accent-green-dim);
    border: 1px solid rgba(0, 255, 136, 0.3);
    color: var(--accent-green);
}

.alert-error {
    background: var(--accent-red-dim);
    border: 1px solid rgba(255, 51, 102, 0.3);
    color: var(--accent-red);
}

.alert-warning {
    background: var(--accent-yellow-dim);
    border: 1px solid rgba(255, 204, 0, 0.3);
    color: var(--accent-yellow);
}

.alert-info {
    background: var(--accent-cyan-dim);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--accent-cyan);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .main-content {
        padding: 16px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 12px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .servers-grid {
        grid-template-columns: 1fr;
    }
    
    .containers-table {
        display: block;
        overflow-x: auto;
    }
    
    .tabs-container {
        width: 100%;
        overflow-x: auto;
    }
    
    .modal {
        margin: 16px;
        max-width: calc(100% - 32px);
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}