:root {
    --bg-dark: #f0f2f5;
    --bg-panel: #ffffff;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --accent-blue: #0969da;
    --accent-hover: #0349b4;
    --accent-green: #1a7f37;
    --accent-green-hover: #116329;
    --border-color: #d1d5db;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

#app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    z-index: 10;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.controls {
    display: flex;
    gap: 12px;
}

.btn {
    padding: 8px 16px;
    border: 1px solid rgba(240,246,252,0.1);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s ease;
    color: var(--bg-panel);
    display: flex;
    align-items: center;
}

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

.btn.success { background-color: var(--accent-green); }
.btn.success:hover { background-color: var(--accent-green-hover); }

.btn.secondary { background-color: #f3f4f6; color: var(--text-primary); width: 100%; margin-top: 15px; }
.btn.secondary:hover { background-color: #e5e7eb; border-color: #9ca3af; }

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.panel {
    width: 320px;
    background-color: var(--bg-panel);
    display: flex;
    flex-direction: column;
    padding: 20px;
    border-right: 1px solid var(--border-color);
    box-shadow: 4px 0 15px rgba(0,0,0,0.2);
    z-index: 5;
}
.right-panel {
    border-right: none;
    border-left: 1px solid var(--border-color);
    box-shadow: -4px 0 15px rgba(0,0,0,0.2);
}

.panel h3 {
    margin-bottom: 15px;
    font-size: 1rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cargo-list {
    flex: 1;
    overflow-y: auto;
    padding-right: 5px;
}

/* Scrollbar Styles */
.cargo-list::-webkit-scrollbar { width: 6px; }
.cargo-list::-webkit-scrollbar-track { background: transparent; }
.cargo-list::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }

.cargo-item {
    background: #ffffff;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 10px;
    border-left: 4px solid var(--accent-blue);
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    border-left-width: 4px;
    transition: transform 0.2s;
}
.cargo-item:hover {
    transform: translateX(2px);
    border-color: #8b949e;
}

.cargo-item strong { display: block; margin-bottom: 4px; color: var(--text-primary);}
.cargo-item span { color: var(--text-secondary); font-size: 0.8rem; display: block;}

.status-tag {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: bold;
    margin-top: 6px;
}
.status-missing { background: rgba(248, 81, 73, 0.2); color: #ff8888; border: 1px solid rgba(248, 81, 73, 0.5); }
.status-loaded { background: rgba(46, 160, 67, 0.2); color: #88ff88; border: 1px solid rgba(46, 160, 67, 0.5); }

.empty-msg {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-style: italic;
    text-align: center;
    margin-top: 30px;
}

.truck-settings label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.truck-settings input, .truck-settings select {
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 10px;
    border-radius: 6px;
    width: 120px;
    text-align: right;
    transition: border-color 0.2s;
}
.truck-settings select {
    text-align: left;
}
.truck-settings input:focus, .truck-settings select:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.stats h4 {
    margin-bottom: 15px;
    color: var(--text-primary);
    font-size: 0.95rem;
    text-transform: uppercase;
}
.stats p {
    font-size: 0.9rem;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    color: var(--text-primary);
}
.stats span {
    font-weight: 600;
    color: var(--text-primary);
}

.canvas-container {
    flex: 1;
    position: relative;
    background: radial-gradient(circle at center, #ffffff 0%, #e2e8f0 100%);
    overflow: hidden;
}

/* Background image overlay for Cutaway Mode */
.canvas-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.canvas-bg.visible {
    opacity: 1;
}

/* Make the Three.js canvas transparent in cutaway mode */
.canvas-container.cutaway-mode canvas {
    background: transparent !important;
}

.canvas-container.cutaway-mode {
    background: #0d1117;
}

.overlay-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Cutaway toggle button styles */
.btn-cutaway {
    width: auto !important;
    padding: 0 12px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    gap: 6px;
    display: flex;
    align-items: center;
    white-space: nowrap;
    border-radius: 20px !important;
    height: 32px;
    background: rgba(255,255,255,0.95) !important;
    border: 1.5px solid #d1d5db !important;
    color: #374151 !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    transition: all 0.25s ease;
}

.btn-cutaway::after {
    content: 'MODO CORTE';
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.8px;
}

.btn-cutaway.active {
    background: linear-gradient(135deg, #0969da 0%, #1d4ed8 100%) !important;
    border-color: #0969da !important;
    color: #ffffff !important;
    box-shadow: 0 3px 12px rgba(9, 105, 218, 0.45);
}

.btn-cutaway.active::after {
    content: 'MODO CORTE';
}

.btn-cutaway:not(.active)::after {
    content: 'VISTA 3D';
}

.btn-icon {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-icon:hover {
    background: #e2e8f0;
    color: var(--text-primary);
}

.info-box {
    margin-top: auto;
    background: rgba(47, 129, 247, 0.1);
    border: 1px solid rgba(47, 129, 247, 0.4);
    padding: 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}
.info-box strong { color: var(--accent-blue); }

.context-menu {
    display: none;
    position: absolute;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    z-index: 1000;
    border-radius: 8px;
    padding: 5px 0;
    min-width: 200px;
    font-family: inherit;
}

.context-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.context-menu li {
    padding: 10px 16px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-primary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    position: relative;
}

.context-menu li:hover {
    background: rgba(9, 105, 218, 0.08);
    color: var(--accent-blue);
}

/* Submenú de traslado */
.context-menu .has-submenu::after {
    content: "▶";
    font-size: 0.65rem;
    margin-left: auto;
    color: var(--text-secondary);
}

.context-menu .submenu {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    border-radius: 8px;
    padding: 5px 0;
    min-width: 170px;
    list-style: none;
}

.context-menu .has-submenu:hover .submenu {
    display: block;
}

/* Estilos para Guía de Remisión */
.guide-info-card {
    background: linear-gradient(135deg, rgba(9, 105, 218, 0.08) 0%, rgba(9, 105, 218, 0.02) 100%);
    border: 1.5px solid rgba(9, 105, 218, 0.25);
    border-radius: 8px;
    padding: 14px;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(9, 105, 218, 0.05);
    transition: all 0.3s ease;
}
.guide-info-card:hover {
    border-color: rgba(9, 105, 218, 0.4);
    box-shadow: 0 6px 16px rgba(9, 105, 218, 0.1);
}

.warning-banner {
    background-color: #f3f4f6;
    border: 1px solid #d1d5db;
    color: #111827;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-top: 12px;
    text-align: center;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 0.9; }
    50% { opacity: 1; }
    100% { opacity: 0.9; }
}

/* Estilos para pestañas de niveles */
.level-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.tab-btn {
    flex: 1;
    padding: 6px 2px;
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: #ffffff;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    text-align: center;
}

.tab-btn:hover {
    background: #f3f4f6;
    color: var(--text-primary);
}

.tab-btn.active {
    font-weight: bold;
    color: #ffffff;
}

.tab-btn[data-level="all"].active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
}

.tab-btn[data-level="0"].active {
    background: #8b5cf6;
    border-color: #8b5cf6;
}

.tab-btn[data-level="1"].active {
    background: #2ea043;
    border-color: #2ea043;
}

.tab-btn[data-level="2"].active {
    background: #f1c40f;
    border-color: #f1c40f;
    color: #111827;
}

.tab-btn[data-level="3"].active {
    background: #e74c3c;
    border-color: #e74c3c;
}