:root {
    --bg: #f5f2eb;
    --text: #2d2d2d;
    --text-muted: #8b7355;
    --panel-bg: rgba(245, 242, 235, 0.95);
    --panel-border: rgba(160, 128, 96, 0.2);
    --legend-bg: rgba(245, 242, 235, 0.9);
    --shadow: rgba(160, 128, 96, 0.15);
    --edge: rgba(160, 128, 96, 0.5);
    --car-bg: #4a4a4a;
    --font-bg: rgba(245, 242, 235, 0.8);
}

[data-theme="dark"] {
    --bg: #0d0d0d;
    --text: #e8e8e8;
    --text-muted: #a08060;
    --panel-bg: rgba(20, 20, 25, 0.95);
    --panel-border: rgba(160, 128, 96, 0.15);
    --legend-bg: rgba(20, 20, 25, 0.9);
    --shadow: rgba(0, 0, 0, 0.4);
    --edge: rgba(180, 150, 110, 0.5);
    --car-bg: #b0b0b0;
    --font-bg: rgba(13, 13, 13, 0.85);
}

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

body {
    font-family: 'DM Sans', sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow: hidden;
    height: 100vh;
    transition: background 0.3s, color 0.3s;
}

#loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    transition: opacity 0.3s ease-out;
}

#loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-hex {
    width: 80px;
    height: 80px;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    background: #1a1a1a;
    animation: loaderSpin 3s ease-in-out infinite;
}

[data-theme="dark"] .loader-hex {
    background: #e8e8e8;
}

@keyframes loaderSpin {
    0% { transform: rotate(0deg) scale(1); }
    25% { transform: rotate(180deg) scale(1); }
    37.5% { transform: rotate(180deg) scale(1.2); }
    50% { transform: rotate(180deg) scale(1); }
    75% { transform: rotate(360deg) scale(1); }
    87.5% { transform: rotate(360deg) scale(1.2); }
    100% { transform: rotate(360deg) scale(1); }
}

.loader-text {
    margin-top: 20px;
    font-family: 'Playfair Display', serif;
    font-size: 20px;
    color: var(--text);
    letter-spacing: 0.5px;
}

h1, h2, h3, h4, .info-panel h3, .legend h4, .theme-toggle {
    font-family: 'Playfair Display', serif;
}

#network {
    width: 100%;
    height: 100vh;
    background: var(--bg);
    transition: background 0.3s;
    cursor: grab;
}

#network.ripple::after,
.search-container.ripple::after {
    display: none;
}

@keyframes canvasRipple {
    0% {
        box-shadow: 0 0 0 0 rgba(160, 128, 96, 0.4);
    }
    50% {
        box-shadow: 0 0 0 20px rgba(160, 128, 96, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(160, 128, 96, 0);
    }
}

#network.ripple::after {
    animation: canvasRipple 0.6s ease-out;
}

@keyframes canvasRipple {
    0% {
        opacity: 0.3;
        transform: scale(0);
    }
    100% {
        opacity: 0;
        transform: scale(3);
    }
}

#network:active {
    cursor: grabbing;
}

.theme-toggle {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    padding: 6px 16px;
    font-size: 12px;
    cursor: pointer;
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    z-index: 200;
    transition: all 0.3s;
}

.theme-toggle:hover {
    background: var(--text-muted);
    color: var(--bg);
}

.vis-network canvas {
    cursor: grab;
}

.vis-network canvas:active {
    cursor: grabbing;
}

.info-panel {
    position: fixed;
    bottom: 24px;
    left: 24px;
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 20px 24px;
    min-width: 280px;
    max-width: 340px;
    box-shadow: 0 8px 32px var(--shadow);
    transform: translateY(120%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
}

.info-panel.visible {
    transform: translateY(0);
    opacity: 1;
    animation: panelPulse 0.4s ease-out;
}

@keyframes panelPulse {
    0% {
        transform: translateY(20px) scale(0.95);
        opacity: 0;
    }
    50% {
        transform: translateY(0) scale(1.02);
    }
    100% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

#network.ripple::after,
.search-container.ripple::after {
    display: none;
}

@keyframes panelPulse {
    0% {
        transform: translateY(20px) scale(0.95);
        opacity: 0;
    }
    50% {
        transform: translateY(0) scale(1.02);
    }
    100% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.info-panel h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text);
    letter-spacing: 0.3px;
}

.info-panel .type-badge {
    display: inline-block;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 14px;
    font-weight: 500;
}

.info-panel .type-badge.engine {
    background: rgba(199, 91, 57, 0.15);
    color: #c75b39;
    border: 1px solid rgba(199, 91, 57, 0.3);
}

.info-panel .type-badge.car {
    background: rgba(176, 176, 176, 0.15);
    color: #b0b0b0;
    border: 1px solid rgba(176, 176, 176, 0.3);
}

.info-panel .detail {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid var(--panel-border);
    font-size: 13px;
}

.info-panel .detail:last-child {
    border-bottom: none;
}

.info-panel .detail-label {
    color: var(--text-muted);
}

.info-panel .detail-value {
    color: var(--text);
    font-weight: 500;
}

.legend {
    position: fixed;
    top: 24px;
    right: 24px;
    background: var(--legend-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 16px 20px;
    font-size: 12px;
}

.legend h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.legend-item:last-child {
    margin-bottom: 0;
}

.legend-shape {
    width: 14px;
    height: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.legend-hex {
    width: 12px;
    height: 10px;
    background: #c75b39;
    clip-path: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
}

.legend-circle {
    width: 12px;
    height: 12px;
    background: var(--car-bg);
    border: 2px dashed var(--text-muted);
    border-radius: 50%;
    box-sizing: border-box;
}

.instructions {
    position: fixed;
    bottom: 24px;
    right: 24px;
    font-size: 12px;
    color: var(--text-muted);
}

.instructions span {
    display: block;
    margin-bottom: 4px;
}

.search-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.search-modal.visible {
    opacity: 1;
    pointer-events: auto;
}

.search-container {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 8px 32px var(--shadow);
    overflow: hidden;
}

.search-input-wrapper {
    padding: 16px;
    border-bottom: 1px solid var(--panel-border);
}

.search-input {
    width: 100%;
    background: transparent;
    border: none;
    font-size: 18px;
    font-family: 'DM Sans', sans-serif;
    color: var(--text);
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-results {
    max-height: 400px;
    overflow-y: auto;
}

.search-result {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: background 0.1s;
}

.search-result:hover,
.search-result.selected {
    background: var(--text-muted);
    color: var(--bg);
}

.search-result-name {
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
}

.search-result-type {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.7;
    padding: 2px 8px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
}

.search-hint {
    padding: 12px 16px;
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    border-top: 1px solid var(--panel-border);
}

.search-hint kbd {
    background: var(--bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    margin: 0 2px;
}

.search-container.ripple::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    background: radial-gradient(circle at center, var(--text-muted) 0%, transparent 70%);
    opacity: 0;
    pointer-events: none;
}

.search-container.ripple::after {
    animation: ripple 0.5s ease-out;
}

@keyframes ripple {
    0% {
        opacity: 0.6;
        transform: scale(0);
    }
    100% {
        opacity: 0;
        transform: scale(2);
    }
}