/* CSS Variables for theming */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;

    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    --bg-tertiary: #e5e7eb;

    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;

    --border-color: #d1d5db;
    --border-radius: 0.5rem;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1f2937;
        --bg-secondary: #111827;
        --bg-tertiary: #374151;
        --text-primary: #f3f4f6;
        --text-secondary: #d1d5db;
        --text-light: #9ca3af;
        --border-color: #4b5563;
    }
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container */
.container {
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
}

/* Header */
.header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.header .subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

@media (max-width: 768px) {
    .header {
        padding: var(--spacing-lg) var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }

    .header h1 {
        font-size: 1.5rem;
    }
}

/* Status bar */
.status-bar {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    font-size: 0.875rem;
}

.status-item .label {
    color: var(--text-secondary);
    font-weight: 500;
}

.status-item .value {
    color: var(--text-primary);
    font-weight: 600;
}

.status-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.online {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.cert-valid {
    color: var(--success-color);
    font-weight: 600;
}

@media (max-width: 768px) {
    .status-bar {
        padding: var(--spacing-md);
        font-size: 0.8rem;
    }
}

/* Main content */
main {
    flex: 1;
}

/* Forms */
.login-form {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn:active {
    transform: translateY(0);
}

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

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

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

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

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

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-large {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.1rem;
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* IP Info */
.ip-info {
    text-align: center;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    background-color: var(--bg-primary);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
}

.ip-info strong {
    color: var(--primary-color);
    font-family: 'Monaco', 'Courier New', monospace;
}

/* Sections */
.dashboard-section {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.dashboard-section h2 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.dashboard-section.actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-section {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.info-section h2 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
}

.info-section h3 {
    font-size: 1rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.info-list {
    list-style: none;
    padding-left: 0;
}

.info-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.info-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.info-list ol {
    list-style-position: inside;
}

code {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: calc(var(--border-radius) / 2);
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.85em;
    color: var(--primary-color);
}

/* Alerts */
.alert {
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #7f1d1d;
}

@media (prefers-color-scheme: dark) {
    .alert-error {
        color: #fecaca;
    }
}

.alert-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
}

.alert-content strong {
    display: block;
    margin-bottom: var(--spacing-sm);
}

.alert-content p {
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.alert-content p:last-child {
    margin-bottom: 0;
}

.alert-large {
    padding: var(--spacing-xl);
}

/* Success banner */
.success-banner {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(52, 211, 153, 0.1));
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.success-icon {
    font-size: 2rem;
    color: var(--success-color);
}

.success-content h2 {
    color: var(--success-color);
    font-size: 1.3rem;
}

/* Info cards */
.info-card,
.config-card {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.info-row,
.config-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.info-row:last-child,
.config-item:last-child {
    border-bottom: none;
}

.info-row .label,
.config-item .label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

.info-row .value,
.config-item .value {
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'Monaco', 'Courier New', monospace;
}

.countdown {
    color: var(--primary-color);
    font-weight: 700;
}

/* Proxy URL box */
.proxy-url-container {
    margin-top: var(--spacing-lg);
}

.proxy-url-container label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.proxy-url-box {
    display: flex;
    gap: var(--spacing-sm);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    align-items: center;
}

.proxy-url-box code {
    flex: 1;
    padding: 0;
    background: none;
    color: var(--text-primary);
    font-weight: 600;
    word-break: break-all;
}

.copy-feedback {
    margin-top: var(--spacing-sm);
    color: var(--success-color);
    font-size: 0.9rem;
    font-weight: 600;
    animation: fadeInOut 2s ease-in-out;
}

@keyframes fadeInOut {
    0% { opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { opacity: 0; }
}

/* Error actions */
.error-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.error-actions .btn {
    width: 100%;
}

.error-details {
    font-size: 0.85rem;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: var(--spacing-xl);
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .container {
        max-width: 100%;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    .btn-large {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
    }

    .login-form {
        padding: var(--spacing-lg);
    }

    .dashboard-section,
    .info-section {
        padding: var(--spacing-md);
    }

    .proxy-url-box {
        flex-direction: column;
        align-items: stretch;
    }

    .proxy-url-box .btn {
        width: 100%;
    }

    .error-actions {
        gap: var(--spacing-sm);
    }
}

/* Print styles */
@media print {
    body {
        background: white;
    }

    .footer,
    .btn {
        display: none;
    }
}

/* Tunnel test panel */
.test-panel {
    margin-bottom: var(--spacing-md);
}

.test-idle, .test-running {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: var(--spacing-sm) 0;
}

.test-error {
    color: var(--danger-color);
    font-size: 0.9rem;
    padding: var(--spacing-sm) 0;
}

.test-results {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.test-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
}

.test-step--ok {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.test-step--fail {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.test-icon {
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
    width: 1.2rem;
    text-align: center;
}

.test-step--ok .test-icon { color: var(--success-color); }
.test-step--fail .test-icon { color: var(--danger-color); }

.test-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    min-width: 0;
}

.test-name {
    font-weight: 600;
    color: var(--text-primary);
}

.test-detail {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-family: 'Monaco', 'Courier New', monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.test-ms {
    font-size: 0.78rem;
    color: var(--text-light);
    font-family: 'Monaco', 'Courier New', monospace;
    flex-shrink: 0;
}

.test-overall {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    font-weight: 700;
    font-size: 0.95rem;
    text-align: center;
}

.test-overall--ok {
    background-color: rgba(16, 185, 129, 0.15);
    color: #065f46;
    border: 1px solid rgba(16, 185, 129, 0.4);
}

.test-overall--fail {
    background-color: rgba(239, 68, 68, 0.12);
    color: #991b1b;
    border: 1px solid rgba(239, 68, 68, 0.35);
}

@media (prefers-color-scheme: dark) {
    .test-overall--ok { color: #6ee7b7; background-color: rgba(16, 185, 129, 0.2); }
    .test-overall--fail { color: #fca5a5; background-color: rgba(239, 68, 68, 0.2); }
}

.test-elapsed {
    font-weight: 400;
    font-size: 0.8rem;
    opacity: 0.7;
}

/* NAT status badge */
.nat-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 700;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    letter-spacing: 0.02em;
}

.nat-active {
    background-color: rgba(16, 185, 129, 0.15);
    color: #065f46;
    border: 1px solid rgba(16, 185, 129, 0.4);
}

@media (prefers-color-scheme: dark) {
    .nat-active {
        background-color: rgba(16, 185, 129, 0.2);
        color: #6ee7b7;
    }
}

.nat-inactive {
    background-color: rgba(239, 68, 68, 0.12);
    color: #991b1b;
    border: 1px solid rgba(239, 68, 68, 0.35);
}

@media (prefers-color-scheme: dark) {
    .nat-inactive {
        background-color: rgba(239, 68, 68, 0.2);
        color: #fca5a5;
    }
}

.nat-unknown {
    background-color: rgba(107, 114, 128, 0.12);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* ===========================================================
   DV2 — Dashboard V2 (diagrama interactivo)
   =========================================================== */

.dv2-page {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Oculta el container del login en páginas dv2 */
.dv2-page .container { display: none; }

.dv2-wrap {
    max-width: 980px;
    width: 100%;
    margin: 0 auto;
    padding: 1.25rem 1rem 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* ── Tabs de servicios ──────────────────────────────────── */
.dv2-tabs {
    display: flex;
    gap: 0.5rem;
    margin: 1rem 0 1.25rem;
}

.dv2-tab {
    padding: 0.5rem 1.1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background-color 0.15s, color 0.15s;
}

.dv2-tab:hover {
    background-color: var(--bg-tertiary);
}

.dv2-tab--active {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

/* ── VPN ────────────────────────────────────────────────── */
.dv2-card-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0 0 0.75rem;
}

.dv2-muted {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.vpn-client-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.vpn-new-device {
    margin-top: 1rem;
}

.vpn-qr-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.vpn-qr-img {
    width: 220px;
    height: 220px;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    background: #fff;
    padding: 0.5rem;
}

.vpn-conf-actions {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    max-width: 320px;
}

.vpn-conf-textarea {
    width: 100%;
    font-family: monospace;
    font-size: 0.75rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.4rem;
    padding: 0.5rem;
}

.vpn-device-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.vpn-device-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
}

/* ── Header ─────────────────────────────────────────────── */
.dv2-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.dv2-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.3rem;
    line-height: 1.2;
}

.dv2-session-info {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.84rem;
    color: var(--text-secondary);
}

.dv2-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    display: inline-block;
}
.dv2-dot--active {
    background: #10b981;
    box-shadow: 0 0 0 3px rgba(16,185,129,0.2);
    animation: dv2-dot-pulse 2.2s ease-in-out infinite;
}
@keyframes dv2-dot-pulse {
    0%, 100% { box-shadow: 0 0 0 3px rgba(16,185,129,0.2); }
    50%       { box-shadow: 0 0 0 6px rgba(16,185,129,0.08); }
}

.dv2-link-btn, .dv2-back-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
    transition: all 0.18s;
    background: var(--bg-primary);
    flex-shrink: 0;
}
.dv2-link-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: rgba(37,99,235,0.05);
}
.dv2-back-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

/* ── Card ───────────────────────────────────────────────── */
.dv2-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

@media (prefers-color-scheme: dark) {
    .dv2-card {
        background: #1e293b;
        border-color: rgba(255,255,255,0.08);
        box-shadow: 0 6px 28px rgba(0,0,0,0.45);
    }
}

/* ── Diagrama ───────────────────────────────────────────── */
.dv2-diag-wrap {
    padding: 1.5rem 1rem 1rem;
    overflow-x: auto;
}

.dv2-diag-row {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-width: 0;
}

/* ── Nodo ───────────────────────────────────────────────── */
.dv2-node {
    flex-shrink: 0;
    width: 120px;
    border-radius: 14px;
    padding: 1rem 0.6rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid transparent;
    transition: background 0.45s ease, border-color 0.45s ease, box-shadow 0.45s ease;
}

/* Estados de nodo — light */
.dv2-node--idle {
    background: linear-gradient(145deg, rgba(59,130,246,0.09), rgba(59,130,246,0.03));
    border-color: rgba(59,130,246,0.28);
    box-shadow: 0 3px 14px rgba(59,130,246,0.08);
}
.dv2-node--idle .dv2-icon-ring { background: rgba(59,130,246,0.13); }
.dv2-node--idle .dv2-node-name { color: #2563eb; }

.dv2-node--ok {
    background: linear-gradient(145deg, rgba(16,185,129,0.1), rgba(16,185,129,0.04));
    border-color: rgba(16,185,129,0.38);
    box-shadow: 0 3px 14px rgba(16,185,129,0.1);
}
.dv2-node--ok .dv2-icon-ring { background: rgba(16,185,129,0.16); }
.dv2-node--ok .dv2-node-name { color: #059669; }

.dv2-node--fail {
    background: linear-gradient(145deg, rgba(239,68,68,0.09), rgba(239,68,68,0.03));
    border-color: rgba(239,68,68,0.32);
    box-shadow: 0 3px 14px rgba(239,68,68,0.08);
}
.dv2-node--fail .dv2-icon-ring { background: rgba(239,68,68,0.13); }
.dv2-node--fail .dv2-node-name { color: #dc2626; }

.dv2-node--testing {
    animation: dv2-node-pulse 0.9s ease-in-out infinite;
}
@keyframes dv2-node-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.6; transform: scale(0.97); }
}

/* Estados de nodo — dark mode */
@media (prefers-color-scheme: dark) {
    .dv2-node--idle {
        background: linear-gradient(145deg, #1a2a44, #0d1b33);
        border-color: rgba(59,130,246,0.38);
        box-shadow: 0 6px 26px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.05);
    }
    .dv2-node--idle .dv2-node-name { color: #60a5fa; }

    .dv2-node--ok {
        background: linear-gradient(145deg, rgba(16,185,129,0.18), rgba(16,185,129,0.07));
        border-color: rgba(16,185,129,0.45);
        box-shadow: 0 6px 26px rgba(16,185,129,0.15), inset 0 1px 0 rgba(255,255,255,0.05);
    }
    .dv2-node--ok .dv2-node-name { color: #34d399; }

    .dv2-node--fail {
        background: linear-gradient(145deg, rgba(239,68,68,0.18), rgba(239,68,68,0.07));
        border-color: rgba(239,68,68,0.4);
        box-shadow: 0 6px 26px rgba(239,68,68,0.12), inset 0 1px 0 rgba(255,255,255,0.05);
    }
    .dv2-node--fail .dv2-node-name { color: #f87171; }
}

/* ── Icono del nodo ─────────────────────────────────────── */
.dv2-icon-ring {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 0.55rem;
    transition: background 0.45s ease;
}

.dv2-node-name {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    transition: color 0.45s ease;
    line-height: 1.2;
}

.dv2-node-desc {
    font-size: 0.62rem;
    color: var(--text-secondary);
    margin-top: 0.2rem;
    line-height: 1.3;
}

/* ── Conector ───────────────────────────────────────────── */
.dv2-conn {
    flex: 1;
    min-width: 36px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    transition: color 0.45s ease;
    padding: 0 2px;
}

.dv2-conn--idle { color: #3b82f6; }
.dv2-conn--ok   { color: #10b981; }
.dv2-conn--fail { color: #ef4444; }
.dv2-conn--testing { animation: dv2-conn-pulse 0.85s ease-in-out infinite; }
@keyframes dv2-conn-pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.3; }
}

@media (prefers-color-scheme: dark) {
    .dv2-conn--idle { color: #60a5fa; }
    .dv2-conn--ok   { color: #34d399; }
    .dv2-conn--fail { color: #f87171; }
}

.dv2-svg-h { width: 100%; height: 16px; display: block; flex-shrink: 0; }
.dv2-svg-v { display: none; flex-shrink: 0; }
.dv2-conn--dual .dv2-svg-h { height: 28px; }
.dv2-conn--dual .dv2-svg-v { width: 28px; height: 90px; }

.dv2-conn-lbl {
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    white-space: nowrap;
    text-align: center;
    line-height: 1.2;
}

/* ── Leyenda ────────────────────────────────────────────── */
.dv2-legend {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
    padding-top: 0.8rem;
    border-top: 1px solid var(--border-color);
}
.dv2-leg {
    font-size: 0.72rem;
    font-weight: 600;
    opacity: 0.85;
}
.dv2-leg--idle { color: #3b82f6; }
.dv2-leg--ok   { color: #10b981; }
.dv2-leg--fail { color: #ef4444; }

@media (prefers-color-scheme: dark) {
    .dv2-leg--idle { color: #60a5fa; }
    .dv2-leg--ok   { color: #34d399; }
    .dv2-leg--fail { color: #f87171; }
}

/* ── Botones dv2 ────────────────────────────────────────── */
.dv2-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.7rem 1.4rem;
    border-radius: 10px;
    border: none;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.18s ease;
    width: 100%;
    margin-top: 0.75rem;
}
.dv2-btn:first-child { margin-top: 0; }
.dv2-btn:hover:not(:disabled) { transform: translateY(-1px); }
.dv2-btn:active:not(:disabled) { transform: translateY(0); }
.dv2-btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.dv2-btn--primary {
    background: #2563eb;
    color: #fff;
}
.dv2-btn--primary:hover:not(:disabled) {
    background: #1d4ed8;
    box-shadow: 0 4px 18px rgba(37,99,235,0.35);
}

.dv2-btn--secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    width: auto;
    margin-top: 0;
}
.dv2-btn--secondary:hover:not(:disabled) { background: var(--border-color); }

.dv2-btn--danger {
    background: #dc2626;
    color: #fff;
}
.dv2-btn--danger:hover:not(:disabled) {
    background: #b91c1c;
    box-shadow: 0 4px 18px rgba(220,38,38,0.3);
}

.dv2-btn--small {
    padding: 0.35rem 0.85rem;
    font-size: 0.8rem;
    width: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    margin-top: 0;
}
.dv2-btn--small:hover:not(:disabled) { background: var(--border-color); }

/* ── Card de acciones ───────────────────────────────────── */
.dv2-actions-card {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
}

.dv2-renew-row { display: flex; flex-direction: column; gap: 0.5rem; }
.dv2-select-lbl {
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text-secondary);
}
.dv2-renew-controls { display: flex; gap: 0.75rem; align-items: center; }

.dv2-select {
    flex: 1;
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
}
.dv2-select:focus { outline: none; border-color: var(--primary-color); }

/* ── Detalles (details.html) ────────────────────────────── */
.dv2-section-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 1rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border-color);
    letter-spacing: 0.02em;
}

.dv2-detail-grid { display: flex; flex-direction: column; }
.dv2-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--border-color);
    gap: 1rem;
}
.dv2-detail-row:last-child { border-bottom: none; }
.dv2-detail-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}
.dv2-detail-value {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Monaco', 'Courier New', monospace;
    text-align: right;
}
.dv2-countdown { color: var(--primary-color); }

.dv2-copy-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.7rem 1rem;
    margin-top: 0.75rem;
}
.dv2-copy-row code {
    flex: 1;
    font-size: 0.8rem;
    background: none;
    padding: 0;
    color: var(--primary-color);
    word-break: break-all;
}
.dv2-note {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    line-height: 1.5;
}

/* ── Mobile ─────────────────────────────────────────────── */
@media (max-width: 730px) {
    .dv2-diag-row {
        flex-direction: column;
        align-items: center;
    }
    .dv2-node { width: 190px; }

    .dv2-conn {
        flex-direction: row;
        align-items: center;
        flex: 0 0 auto;
        width: 190px;
        gap: 0.6rem;
        padding: 3px 0;
    }
    .dv2-svg-h { display: none !important; }
    .dv2-svg-v {
        display: block !important;
        width: 16px;
        height: 60px;
    }
    .dv2-conn--dual .dv2-svg-v { width: 28px; height: 80px; }
    .dv2-conn-lbl { white-space: normal; text-align: left; }

    .dv2-header { flex-direction: column; gap: 0.6rem; }
    .dv2-title { font-size: 1.15rem; }

    .dv2-detail-row { flex-direction: column; align-items: flex-start; gap: 0.2rem; }
    .dv2-detail-value { text-align: left; }

    .dv2-copy-row { flex-direction: column; align-items: stretch; }
    .dv2-btn--small { width: 100%; justify-content: center; }
}