/* 
 * Variables Globales: Definición del sistema de diseño (tokens).
 * Incluye colores institucionales, paleta neutral y tipografía corporativa.
 */
:root {
    --primary-color: #E52A12;
    /* Rojo Metro Bilbao */
    --secondary-color: #97999B;
    /* Gris institucional */
    --accent-color: #E52A12;
    --bg-color: #f8f9fa;
    --text-color: #333333;
    --panel-bg: rgba(255, 255, 255, 0.98);
    --border-color: #dee2e6;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Definición de colores para el Modo Noche */
[data-theme="dark"] {
    --primary-color: #ff4d4d;
    --secondary-color: #b0b3b8;
    --accent-color: #ff4d4d;
    --bg-color: #1a1a1a;
    --text-color: #f0f0f0;
    --panel-bg: rgba(30, 30, 30, 0.98);
    --border-color: #404040;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    transition: background-color 0.3s, color 0.3s;
}

#map {
    width: 100vw;
    height: 100vh;
    z-index: 1;
}

/* Contenedor flotante para elementos de la interfaz sobre el mapa */
.ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    /* Permite clics en el mapa a través de los espacios vacíos */
    z-index: 1000;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 1rem;
    gap: 10px;
}

/* Panel superior de información general */
.header-panel {
    pointer-events: auto;
    background: var(--panel-bg);
    padding: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px);
    max-width: 400px;
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--primary-color);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

.search-panel {
    pointer-events: auto;
    background: var(--panel-bg);
    padding: 0.8rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px);
    max-width: 400px;
    border: 1px solid var(--border-color);
    margin-top: 0;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

h1 {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

h1 img.logo {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.controls {
    display: flex;
    gap: 0.5rem;
}

button {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

button:hover {
    background: var(--border-color);
    transform: translateY(-1px);
}

button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(229, 42, 18, 0.3);
}

.status-bar {
    margin-top: 0.8rem;
    font-size: 0.85rem;
    color: var(--text-color);
    opacity: 0.8;
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.03);
    padding: 4px 8px;
    border-radius: 4px;
}

.search-panel {
    pointer-events: auto;
    background: var(--panel-bg);
    padding: 0.8rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px);
    max-width: 400px;
    border: 1px solid var(--border-color);
    margin-top: 0;
}

.search-container {
    position: relative;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: var(--font-family);
    background: var(--bg-color);
    color: var(--text-color);
    transition: all 0.2s;
    outline: none;
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(229, 42, 18, 0.1);
}

.search-input::placeholder {
    color: var(--secondary-color);
    opacity: 0.6;
}

.search-results {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
}

.search-results.visible {
    display: block;
}

.search-result-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: background-color 0.15s;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: rgba(229, 42, 18, 0.05);
}

.search-result-item .station-icon-small {
    width: 16px;
    height: 16px;
    background: #fff;
    border: 1.5px solid #97999B;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.search-result-item .station-icon-small img {
    width: 10px;
    height: 10px;
    object-fit: contain;
}

.search-result-item .station-name {
    font-size: 0.95rem;
    color: var(--text-color);
    font-weight: 500;
}

.layer-toggle-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    cursor: pointer;
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
    padding: 0;
}

.layer-toggle-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(229, 42, 18, 0.3);
}

.layer-toggle-btn svg {
    pointer-events: none;
}

.info-panel {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 360px;
    max-height: calc(100vh - 40px);
    background: var(--panel-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    z-index: 1500;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transform: translateX(120%);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    overflow: hidden;
}

.info-panel.visible {
    transform: translateX(0);
}

.panel-header {
    padding: 1rem;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.panel-title h2 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.panel-title p {
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.7;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    line-height: 1;
    padding: 0.2rem;
    cursor: pointer;
    opacity: 0.5;
    box-shadow: none;
}

.close-btn:hover {
    background: transparent;
    opacity: 1;
    color: var(--primary-color);
    transform: none;
}

.panel-content {
    padding: 1rem;
    overflow-y: auto;
    flex: 1;
}

.station-list-item {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
}

.station-list-item:last-child {
    border-bottom: none;
}

.station-time {
    font-family: 'Roboto Mono', monospace;
    color: var(--text-color);
    font-weight: 600;
    margin-left: auto;
}

.train-marker {
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.station-icon {
    width: 20px;
    height: 20px;
    background: #fff;
    border: 2px solid #97999B;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.station-icon:hover {
    transform: scale(1.15);
    border-color: var(--primary-color);
    box-shadow: 0 3px 10px rgba(229, 42, 18, 0.3);
    z-index: 1000;
}

.station-icon img {
    width: 13px;
    height: 13px;
    object-fit: contain;
    pointer-events: none;
}

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-color);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s;
}

#loading-screen img {
    width: 120px;
    height: 120px;
    margin-bottom: 1rem;
}

#loading-screen h2 {
    color: var(--text-color);
    font-size: 1.2rem;
    font-weight: 600;
}

@media (max-width: 768px) {
    .header-panel {
        width: 100%;
        max-width: none;
        border-radius: 0 0 12px 12px;
        border-left: none;
        border-bottom: 4px solid var(--primary-color);
        padding: 0.8rem;
    }

    .search-panel {
        width: calc(100% - 55px);
        max-width: none;
        border-radius: 12px;
        margin-top: 5px;
        padding: 0.6rem;
    }

    h1 {
        font-size: 1.2rem;
    }

    .layer-toggle-btn {
        top: auto;
        bottom: auto;
        right: 15px;
        margin-top: 10px;
        width: 44px;
        height: 44px;
        position: absolute;
        top: 135px;
        /* Aligned with search bar */
    }

    .info-panel {
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: auto;
        max-height: 40vh;
        border-radius: 20px 20px 0 0;
        transform: translateY(110%);
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
        padding-bottom: 20px;
    }

    .info-panel.visible {
        transform: translateY(0);
    }

    .leaflet-bottom.leaflet-right {
        bottom: 20px;
        transition: bottom 0.3s;
    }

    body.panel-open .leaflet-bottom.leaflet-right {
        bottom: calc(40vh + 140px);
    }
}