:root {
    --bg-dark: #000000;
    --bg-card: #000000;
    --accent-blue: #0088ff;
    --accent-glow: rgba(0, 136, 255, 0.4);
    --fiber-core: #ffffff;
    --fiber-outer: #00f2ff;
    --text-primary: #e0e6ed;
    --text-secondary: #94a3b8;
    --border-color: #2d3748;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
}

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

/* Header Styling */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 2rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    height: 32px;
}

.logo img {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.logo span {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.05rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-blue);
}

/* Map Container */
#map-container {
    flex: 1;
    position: relative;
}

#map {
    height: 100%;
    width: 100%;
    background: #0d0d0d;
}

/* UI Overlays */
.overlay-panel {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 260px;
    background: rgba(21, 24, 33, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    z-index: 999;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.search-container {
    margin-bottom: 1rem;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 0.6rem 0.8rem 0.6rem 2.2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.85rem;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 10px var(--accent-glow);
}

.search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

.site-list {
    margin-top: 1rem;
    max-height: 250px;
    /* Roughly 5 items at current padding/margin */
    overflow-y: auto;
    padding-right: 8px;
}

/* Custom Premium Scrollbar */
.site-list::-webkit-scrollbar {
    width: 4px;
}

.site-list::-webkit-scrollbar-track {
    background: transparent;
}

.site-list::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 10px;
    box-shadow: 0 0 5px var(--accent-glow);
}

.site-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.site-item:hover {
    background: rgba(0, 136, 255, 0.1);
    border-color: var(--accent-blue);
}

.btn {
    background: var(--accent-blue);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 136, 255, 0.2);
}

.btn:hover {
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
    background: #0099ff;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    box-shadow: none;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    box-shadow: 0 0 15px rgba(0, 136, 255, 0.1);
}

.btn-danger {
    background: rgba(255, 77, 77, 0.1);
    border: 1px solid #ff4d4d;
    color: #ff4d4d;
    box-shadow: none;
}

.btn-danger:hover {
    background: #ff4d4d;
    color: white;
    box-shadow: 0 0 20px rgba(255, 77, 77, 0.3);
}

/* Quick Action Buttons Styling */
.action-btn-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-top: 15px;
}

.action-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-secondary);
}

.action-btn:hover {
    background: rgba(0, 136, 255, 0.1);
    border-color: var(--accent-blue);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 136, 255, 0.2);
}

.action-btn svg {
    width: 18px;
    height: 18px;
}

.action-btn span {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

/* Leaflet Customization */
.leaflet-container {
    background: #0a0b10 !important;
}

.leaflet-bar a {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

.leaflet-control-layers {
    background: rgba(21, 24, 33, 0.9) !important;
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
    border-radius: 8px !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4) !important;
}

.leaflet-control-layers-list {
    padding: 5px;
}

.leaflet-control-layers-base label {
    padding: 5px 10px;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.2s;
}

.leaflet-control-layers-base label:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Geocoder (Search) Dark Mode Styling */
.leaflet-control-geocoder {
    background: rgba(21, 24, 33, 0.9) !important;
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color) !important;
    border-radius: 8px !important;
    overflow: hidden;
}

.leaflet-control-geocoder-icon {
    background-color: transparent !important;
    filter: invert(1);
    width: 32px !important;
    height: 32px !important;
}

.leaflet-control-geocoder-form input {
    background: transparent !important;
    color: var(--text-primary) !important;
    border: none !important;
    padding: 8px 10px !important;
    font-family: 'Inter', sans-serif !important;
}

.leaflet-control-geocoder-results {
    background: var(--bg-card) !important;
    border-top: 1px solid var(--border-color) !important;
}

.leaflet-control-geocoder-result {
    padding: 8px 12px !important;
    background: transparent !important;
}

.leaflet-control-geocoder-result:hover {
    background: rgba(0, 136, 255, 0.1) !important;
    color: var(--accent-blue) !important;
}

.leaflet-control-geocoder-alternatives {
    background-color: var(--bg-card) !important;
}

/* Site Hub Pin Styling */
.site-hub-pin {
    display: flex;
    align-items: center;
    justify-content: center;
}

.pin-inner {
    width: 14px;
    height: 14px;
    background: #fff;
    border: 3px solid var(--accent-blue);
    border-radius: 50%;
    box-shadow: 0 0 15px var(--accent-blue), inset 0 0 5px var(--accent-blue);
    animation: pulse-pin 2s infinite;
}

@keyframes pulse-pin {
    0% {
        transform: scale(1);
        box-shadow: 0 0 10px var(--accent-blue);
    }

    50% {
        transform: scale(1.2);
        box-shadow: 0 0 25px var(--accent-blue);
    }

    100% {
        transform: scale(1);
        box-shadow: 0 0 10px var(--accent-blue);
    }
}

/* Fiber Line Glow */
.fiber-line {
    filter: drop-shadow(0 0 5px var(--fiber-outer));
}

/* Expandable Legend & Metadata */
.legend-item {
    display: flex;
    flex-direction: column;
    padding: 0 !important;
    /* Reset padding to handle internal sections */
    overflow: hidden;
}

.legend-header {
    display: flex;
    align-items: center;
    padding: 10px;
    width: 100%;
    box-sizing: border-box;
}

.legend-header:hover {
    background: rgba(255, 255, 255, 0.05);
}

.legend-toggle-icon {
    margin-left: auto;
    font-size: 0.7rem;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.legend-item.expanded .legend-toggle-icon {
    transform: rotate(180deg);
}

.legend-expanded-content {
    display: none;
    padding: 0 12px 12px 12px;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.legend-item.expanded .legend-expanded-content {
    display: block;
}

.metadata-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-top: 10px;
}

.metadata-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.metadata-section {
    background: rgba(255, 255, 255, 0.02);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
}

.metadata-section:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.03);
}

.metadata-section-title {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--accent-blue);
    text-transform: uppercase;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.metadata-sides-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.metadata-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.metadata-field label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.02rem;
}

.metadata-input {
    background: #0d1117;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    width: 100%;
    box-sizing: border-box;
    transition: all 0.2s ease;
}

.metadata-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 136, 255, 0.1);
}

/* Footer Styling */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 0 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.6rem;
    color: var(--text-secondary);
    z-index: 1000;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    font-weight: 600;
}

/* Precision Mode UI */
.precision-map-overlay {
    pointer-events: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
}

.precision-crosshair-h, .precision-crosshair-v {
    position: absolute;
    background: rgba(0, 242, 255, 0.3);
    box-shadow: 0 0 5px var(--accent-glow);
}

.precision-crosshair-h { height: 1px; width: 100%; top: 50%; }
.precision-crosshair-v { width: 1px; height: 100%; left: 50%; }

.precision-mode-active #map-container .precision-map-overlay {
    display: block;
}

/* Enhanced Vertex Handles */
.leaflet-editing-icon {
    border-radius: 50% !important;
    background: #fff !important;
    border: 2px solid var(--accent-blue) !important;
    box-shadow: 0 0 10px var(--accent-blue) !important;
    width: 12px !important;
    height: 12px !important;
    margin-left: -6px !important;
    margin-top: -6px !important;
}

.selected-run-glow {
    filter: drop-shadow(0 0 8px #fff) drop-shadow(0 0 15px var(--accent-blue));
    stroke-width: 6px !important;
    transition: all 0.3s ease;
}

.nudge-indicator {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: var(--accent-blue);
    padding: 10px 20px;
    border-radius: 50px;
    border: 1px solid var(--accent-blue);
    font-size: 0.8rem;
    font-weight: 800;
    z-index: 3000;
    display: none;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* Fiber Splice Map Styling */
.splice-map-container {
    margin-top: 20px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 16px;
}

.splice-map-title {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tubes-layout {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tube-block {
    background: transparent;
    border-left: 3px solid currentColor;
    border-radius: 0 8px 8px 0;
    padding: 10px 12px;
    margin-bottom: 8px;
    background: rgba(255, 255, 255, 0.01);
}

.tube-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    opacity: 0.8;
}

.tube-swatch {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.tube-name {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

.cores-grid {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.core-node {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    background-clip: padding-box;
}

.core-node:hover {
    transform: scale(1.15) translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.2);
}

.core-node.spliced::after {
    content: '✓';
    font-size: 0.8rem;
    font-weight: 800;
    color: #fff;
    text-shadow: 0 0 4px #000;
}

.core-node.spliced {
    border-color: #39ff14;
    box-shadow: 0 0 8px rgba(57, 255, 20, 0.6);
}

/* TIA-598 Color Classes */
.fc-1 { background-color: #0000FF; color: #0000FF; }
.fc-2 { background-color: #FF8C00; color: #FF8C00; }
.fc-3 { background-color: #008000; color: #008000; }
.fc-4 { background-color: #A52A2A; color: #A52A2A; }
.fc-5 { background-color: #808080; color: #808080; }
.fc-6 { background-color: #FFFFFF; color: #FFFFFF; }
.fc-7 { background-color: #FF0000; color: #FF0000; }
.fc-8 { background-color: #000000; color: #000000; border: 1px solid #444; }
.fc-9 { background-color: #FFFF00; color: #FFFF00; }
.fc-10 { background-color: #EE82EE; color: #EE82EE; }
.fc-11 { background-color: #FFC0CB; color: #FFC0CB; }
.fc-12 { background-color: #00FFFF; color: #00FFFF; }

/* Interactive Splice Organizer Page */
.organizer-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: radial-gradient(circle at top right, #0a0b10 0%, #000 100%);
}

.organizer-main {
    flex: 1;
    display: flex;
    padding: 2rem;
    gap: 2rem;
    overflow: hidden;
}

.cable-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
    padding-right: 1.5rem;
}

.splice-canvas-container {
    flex: 2;
    background: rgba(255, 255, 255, 0.01);
    border: 1px dashed rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

#splice-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

.cable-card {
    background: rgba(21, 24, 33, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.cable-card.active {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px var(--accent-glow);
}

.cable-title {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--accent-blue);
    text-transform: uppercase;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
}

.cable-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.core-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    padding: 4px 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
}

.core-row:hover {
    background: rgba(255, 255, 255, 0.05);
}

.core-row.selected {
    background: rgba(0, 136, 255, 0.15);
    color: var(--accent-blue);
}

.core-node-mini {
    width: 20px;
    height: 20px;
    border-radius: 6px;
    flex-shrink: 0;
}

.core-id {
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}

.core-status {
    margin-left: auto;
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(255,255,255,0.05);
}

.core-status.linked {
    background: rgba(57, 255, 20, 0.1);
    color: #39ff14;
}

.connection-line {
    stroke: var(--accent-blue);
    stroke-width: 2;
    fill: none;
    stroke-dasharray: 4;
    animation: dash 20s linear infinite;
    opacity: 0.6;
}

.connection-line.highlight {
    stroke-width: 4;
    opacity: 1;
    stroke: #fff;
    filter: drop-shadow(0 0 5px var(--accent-blue));
}

@keyframes dash {
    to {
        stroke-dashoffset: -1000;
    }
}

.selection-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
    gap: 1.5rem;
}

.selection-overlay select {
    width: 300px;
}

.batch-controls {
    display: flex;
    gap: 10px;
    margin-top: 1rem;
}