:root {
    --primary: #1a1a1a;
    --primary-light: #2d2d2d;
    --primary-dark: #0a0a0a;
    --accent: #d97706;
    --accent-dark: #b45309;
    --success: #65a30d;
    --danger: #dc2626;
    --warning: #d97706;
    --bg: #e5e5e5;
    --card-bg: #fafafa;
    --text: #171717;
    --text-secondary: #525252;
    --text-muted: #a3a3a3;
    --border: #d4d4d4;
    --shadow: 0 1px 2px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.18);
    --radius: 6px;
    --radius-sm: 4px;
    --transition: 0.2s ease;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

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

body.dashboard-body {
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* ==============================
   LOGIN / REGISTER
   ============================== */

.auth-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 16px;
    background: var(--primary-dark);
    position: relative;
    overflow: hidden;
}

.auth-body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(255,255,255,0.015) 40px, rgba(255,255,255,0.015) 41px),
                repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(255,255,255,0.015) 40px, rgba(255,255,255,0.015) 41px);
    pointer-events: none;
}

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

.auth-box {
    background: var(--card-bg);
    padding: clamp(28px, 5vw, 44px) clamp(20px, 4vw, 36px);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.auth-box h1 {
    color: var(--primary);
    font-size: clamp(22px, 4vw, 30px);
    font-weight: 900;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 2px;
    text-align: center;
}

.auth-box .subtitle {
    color: var(--text-muted);
    font-size: clamp(12px, 2vw, 14px);
    text-align: center;
    margin-bottom: clamp(20px, 3vw, 28px);
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.logo-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
}

.logo-icon svg {
    width: 40px;
    height: 40px;
    stroke: var(--primary);
    stroke-width: 2;
}

.form-group {
    margin-bottom: clamp(14px, 2vw, 18px);
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 5px;
    letter-spacing: 0.3px;
}

.form-group input {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--text);
    background: #f8fafc;
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    -webkit-appearance: none;
    appearance: none;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15);
}

.form-group input::placeholder {
    color: var(--text-muted);
    font-size: 14px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(10px, 2vw, 16px);
}

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

.btn-primary {
    width: 100%;
    padding: 12px 20px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background var(--transition);
    letter-spacing: 1px;
    text-transform: uppercase;
    -webkit-appearance: none;
    appearance: none;
}

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

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

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition);
}

.auth-footer a:hover {
    color: var(--accent-dark);
    text-decoration: underline;
}

.alert {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 18px;
    text-align: center;
    line-height: 1.5;
}

.alert.error {
    background: #1c1010;
    color: #ef4444;
    border: 1px solid #3b1a1a;
}

.alert.success {
    background: #0f1a0f;
    color: var(--success);
    border: 1px solid #1a331a;
}

.alert.success a {
    color: var(--success);
    font-weight: 700;
}
.alert.success a:hover {
    color: #84cc16;
}

/* ==============================
   TOPBAR
   ============================== */

.topbar {
    background: var(--primary-dark);
    color: #fff;
    padding: 0 16px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 1px 0 rgba(255,255,255,0.06);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #2a2a2a;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.topbar-brand svg {
    width: 28px;
    height: 28px;
}

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

.topbar-user {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    opacity: 0.9;
}

.topbar-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
}

.topbar-user-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.topbar-user-name {
    font-weight: 600;
    font-size: 13px;
}

.topbar-user-role {
    font-size: 11px;
    opacity: 0.7;
}

@media (max-width: 640px) {
    .topbar-user-text {
        display: none;
    }
    .topbar {
        height: 52px;
    }
    .topbar-brand {
        font-size: 16px;
    }
}

.btn-logout {
    color: #a3a3a3;
    text-decoration: none;
    font-size: 12px;
    padding: 6px 12px;
    border: 1px solid #333;
    border-radius: var(--radius-sm);
    transition: color var(--transition), border-color var(--transition);
    font-weight: 500;
    white-space: nowrap;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.btn-logout:hover {
    color: #fff;
    border-color: #666;
}

@media (max-width: 640px) {
    .btn-logout {
        padding: 5px 10px;
        font-size: 12px;
    }
}

/* ==============================
   DASHBOARD
   ============================== */

.dashboard {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: clamp(16px, 3vw, 36px) clamp(16px, 3vw, 28px);
    display: flex;
    flex-direction: column;
    width: 100%;
}

.welcome-card {
    background: var(--primary-dark);
    border-radius: var(--radius);
    padding: 0 clamp(16px, 3vw, 32px);
    height: 56px;
    margin-bottom: clamp(20px, 3vw, 32px);
    box-shadow: var(--shadow-lg);
    color: #fff;
    position: relative;
    overflow: hidden;
    border: 1px solid #2a2a2a;
    display: flex;
    align-items: center;
    gap: clamp(16px, 3vw, 32px);
}

.welcome-card h1 {
    font-size: clamp(14px, 2vw, 18px);
    font-weight: 900;
    margin: 0;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    position: relative;
    white-space: nowrap;
}

.welcome-card .welcome-sub {
    display: none;
}

.welcome-stats {
    display: flex;
    gap: clamp(16px, 3vw, 32px);
    position: relative;
    margin-left: auto;
}

.welcome-stat {
    display: flex;
    flex-direction: column;
}

.welcome-stat-value {
    font-size: clamp(13px, 1.5vw, 16px);
    font-weight: 700;
    letter-spacing: 0.5px;
}

.welcome-stat-label {
    font-size: 10px;
    opacity: 0.5;
    text-transform: uppercase;
    letter-spacing: 1px;
}

@media (max-width: 480px) {
    .welcome-stats {
        display: none;
    }
}

.dashboard-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: clamp(12px, 2vw, 20px);
}

@media (max-width: 640px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.dashboard-square {
    width: clamp(200px, 40vw, 400px);
    aspect-ratio: 1;
    align-self: center;
    background: #fff;
    border: 2px solid #000;
    border-radius: var(--radius);
    margin-top: clamp(12px, 2vw, 20px);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 5px;
}

.dashboard-square svg {
    width: 100%;
    height: 100%;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: border-color var(--transition), box-shadow var(--transition);
    border: 1px solid var(--border);
    position: relative;
}

.card:hover {
    border-color: #b0b0b0;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.dashboard-body .card {
    padding: 8px 14px;
    overflow: hidden;
    max-height: 60px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
}

.dashboard-body .card h3 {
    font-size: 11px;
    font-weight: 700;
    color: var(--text);
    margin: 0;
    letter-spacing: 0.3px;
    line-height: 1.2;
}

.dashboard-body .card p {
    display: none;
}

.card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 8px 0;
}

.card p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
}

.dashboard-body .card-icon {
    width: 32px;
    height: 32px;
    min-width: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.dashboard-body .card-icon.blue { background: #2a2a2a; color: #a3a3a3; }
.dashboard-body .card-icon.green { background: #2a2a2a; color: #a3a3a3; }
.dashboard-body .card-icon.orange { background: #2a2a2a; color: var(--accent); }
.dashboard-body .card-icon.purple { background: #2a2a2a; color: #a3a3a3; }

.admin-card {
    border: 1px solid var(--accent);
}

.admin-card .card-icon {
    background: #2a2a2a;
    color: var(--accent);
}

/* ==============================
   RESPONSIVE HELPERS
   ============================== */

.hide-mobile {
    display: initial;
}

@media (max-width: 640px) {
    .hide-mobile {
        display: none;
    }
}

.card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.show-mobile {
    display: none;
}

@media (max-width: 640px) {
    .show-mobile {
        display: initial;
    }
}

/* ==============================
   ESTADO DE PARQUE
   ============================== */

.nucleo-section {
    margin-bottom: 28px;
}

.nucleo-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--primary-dark);
    border-radius: var(--radius) var(--radius) 0 0;
    border: 1px solid #2a2a2a;
    border-bottom: none;
}

.nucleo-header h2 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nucleo-count {
    color: #a3a3a3;
    font-size: 12px;
}

.vehiculos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
    padding: 16px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
}

.vehiculo-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
    position: relative;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.vehiculo-card:hover {
    border-color: #b0b0b0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.vehiculo-status-dot {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
}

.vehiculo-matricula {
    font-size: 18px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.vehiculo-serie {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
}

.vehiculo-tipo {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

@media (max-width: 640px) {
    .vehiculos-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        padding: 12px;
        gap: 8px;
    }

    .vehiculo-card {
        padding: 10px;
    }

    .vehiculo-matricula {
        font-size: 15px;
    }
}

/* ==============================
   ESTRUCTURA VEHÍCULOS
   ============================== */

.nivel-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.nivel-tab {
    padding: 8px 14px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nivel-tab:hover {
    border-color: #b0b0b0;
    color: var(--text);
}

.nivel-tab-active {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
}

.nivel-tab-active:hover {
    background: var(--primary);
    color: #fff;
}

@media (max-width: 640px) {
    .nivel-tab {
        font-size: 10px;
        padding: 6px 10px;
    }
}

/* ==============================
   BREADCRUMB
   ============================== */

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    padding: 10px 14px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
}

.breadcrumb-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition);
}

.breadcrumb-link:hover {
    color: var(--accent-dark);
    text-decoration: underline;
}

.breadcrumb-sep {
    color: var(--text-muted);
    font-size: 16px;
    font-weight: 700;
}

.breadcrumb-current {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ==============================
   ACTION BUTTONS
   ============================== */

.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--card-bg);
    transition: all var(--transition);
    line-height: 1;
}

.action-btn:hover {
    transform: scale(1.1);
}

.action-view {
    color: var(--accent);
    border-color: var(--accent);
}

.action-view:hover {
    background: var(--accent);
    color: #fff;
}

.action-edit {
    color: #2563eb;
    border-color: #2563eb;
}

.action-edit:hover {
    background: #2563eb;
    color: #fff;
}

.action-delete {
    color: var(--danger);
    border-color: var(--danger);
    padding: 0;
}

.action-delete:hover {
    background: var(--danger);
    color: #fff;
}

.action-subs {
    color: #7c3aed;
    border-color: #7c3aed;
}

.action-subs:hover {
    background: #7c3aed;
    color: #fff;
}

.action-diag {
    color: #d97706;
    border-color: #d97706;
    font-weight: 700;
    font-size: 11px;
}

.action-diag:hover {
    background: #d97706;
    color: #fff;
}

.action-conoc {
    color: #059669;
    border-color: #059669;
    font-weight: 700;
    font-size: 11px;
}

.action-conoc:hover {
    background: #059669;
    color: #fff;
}

/* ==============================
   DIAGRAMA VISUAL
   ============================== */

.diagram-canvas {
    position: relative;
    background: #f0f0f0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin: 0 auto;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

.diagram-canvas.config-mode .diagram-elem {
    cursor: move;
    border-style: dashed !important;
}

.diagram-canvas.config-mode .diagram-elem:hover {
    outline: 2px solid #2563eb;
    outline-offset: 1px;
}

.diagram-canvas.config-mode .diagram-elem .elem-controls {
    display: flex;
}

.diagram-elem {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    overflow: hidden;
    word-break: break-word;
    user-select: none;
    transition: outline 0.1s;
    z-index: 1;
}

.diagram-elem .elem-controls {
    display: none;
    position: absolute;
    top: -28px;
    right: 0;
    gap: 2px;
    z-index: 10;
}

.diagram-elem .elem-controls button {
    padding: 2px 6px;
    border: 1px solid var(--border);
    border-radius: 3px;
    background: #fff;
    cursor: pointer;
    font-size: 10px;
    line-height: 1.2;
    white-space: nowrap;
}

.diagram-elem .elem-controls button:hover {
    background: #eef2ff;
}

.diagram-elem .elem-controls .del-elem {
    color: var(--danger);
}

.diagram-elem.shape-label span {
    text-align: center;
    line-height: 1.2;
    width: 100%;
}

.diagram-elem.shape-rectangle {
    border-radius: 0;
}

.diagram-elem.shape-circle {
    border-radius: 50%;
}

.diagram-elem.shape-line {
    min-height: 2px;
    overflow: visible;
}

.diagram-elem.shape-line .resize-handle {
    right: -4px;
    bottom: -4px;
}

.diagram-elem.shape-rounded {
    border-radius: 8px;
}

.grid-snap {
    background-image: radial-gradient(circle, #ccc 1px, transparent 1px);
    background-size: 20px 20px;
}

.diagram-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    cursor: pointer;
    transition: all .15s;
}

.diagram-card:hover {
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.diagram-card .diagram-thumb {
    width: 100%;
    height: 120px;
    background: #e5e5e5;
    border-radius: 4px;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    margin-bottom: 8px;
    border: 1px solid var(--border);
}

.diagram-card h4 {
    font-size: 14px;
    margin-bottom: 2px;
}

.diagram-card p {
    font-size: 11px;
    color: var(--text-muted);
}

.diagram-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.diag-var-select {
    max-height: 180px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 4px;
}

.diag-var-select .var-option {
    padding: 4px 8px;
    font-size: 11px;
    cursor: pointer;
    border-radius: 3px;
    transition: background .1s;
}

.diag-var-select .var-option:hover {
    background: #eef2ff;
}

.diag-var-select .var-option.selected {
    background: #2563eb;
    color: #fff;
}

.diag-var-filter {
    width: 100%;
    padding: 5px 8px;
    border: 1px solid var(--border);
    border-radius: 3px;
    font-size: 11px;
    margin-bottom: 6px;
    box-sizing: border-box;
}

.elem-form-panel {
    position: fixed;
    top: 0;
    right: -400px;
    width: 380px;
    height: 100%;
    background: var(--card-bg);
    border-left: 1px solid var(--border);
    box-shadow: -4px 0 20px rgba(0,0,0,0.15);
    z-index: 1000;
    transition: right .25s ease;
    overflow-y: auto;
    padding: 16px;
}

.elem-form-panel.open {
    right: 0;
}

.elem-form-panel h3 {
    font-size: 15px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.elem-form-panel .close-panel {
    cursor: pointer;
    font-size: 18px;
    color: var(--text-muted);
    border: none;
    background: none;
}

.elem-form-panel .form-group {
    margin-bottom: 10px;
}

.elem-form-panel .form-group label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.elem-form-panel .form-group input,
.elem-form-panel .form-group select {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 3px;
    font-size: 12px;
    box-sizing: border-box;
}

.elem-form-panel .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.elem-form-panel .color-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.elem-form-panel .color-row input[type="color"] {
    width: 36px;
    height: 32px;
    padding: 2px;
    cursor: pointer;
    flex-shrink: 0;
}

.canvas-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    z-index: 999;
}

.canvas-overlay.show {
    display: block;
}

.zoom-controls {
    display: flex;
    gap: 4px;
    align-items: center;
}

.zoom-controls button {
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 3px;
    background: #fff;
    cursor: pointer;
    font-size: 13px;
}

.zoom-controls span {
    font-size: 12px;
    color: var(--text-secondary);
    min-width: 45px;
    text-align: center;
}

.toolbox {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 12px;
}

.toolbox-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.toolbox-row label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
}

.toolbox-row input,
.toolbox-row select {
    padding: 4px 8px;
    border: 1px solid var(--border);
    border-radius: 3px;
    font-size: 12px;
}

.no-diagram {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.no-diagram svg {
    width: 60px;
    height: 60px;
    stroke: var(--text-muted);
    margin-bottom: 12px;
}

/* ==============================
   MAPA DE ESPAÑA
   ============================== */