:root {
    --bg-dark: #1e1e24;
    --glass-bg: rgba(30, 30, 36, 0.7);
    --glass-border: rgba(255, 255, 255, 0.04);
    --accent-color: #00e5ff;
    --text-primary: #f5f6fa;
    --text-secondary: #a4b0be;
}

html {
    font-size: 80%; /* Shrink all rem-based fonts by 20% */
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow: hidden;
}

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

/* Glassmorphism Panel */
.overlay-panel {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 16px;
    width: 320px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    transition: opacity 0.3s ease;
}

.overlay-panel h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    font-size: 0.9rem;
    color: var(--accent-color);
    font-weight: 500;
}

.pulse {
    width: 10px;
    height: 10px;
    background-color: var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.7);
    animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(0, 229, 255, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 229, 255, 0); }
}

.stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

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

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Ship Marker CSS */
.ship-marker {
    width: 20px;
    height: 20px;
    transition: transform 1s ease-in-out;
}

/* Custom Tooltip Style */
.glass-tooltip {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: 4px;
    padding: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

.leaflet-tooltip-top:before {
    border-top-color: var(--glass-border);
}

.ship-tooltip {
    font-family: 'Inter', sans-serif;
    min-width: 200px;
}

.tooltip-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.tooltip-grid strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Marker Container and Labels */
.marker-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 120px;
}

.ship-svg {
    transform-origin: center;
    transition: transform 1s ease-in-out;
}

.marker-label {
    margin-top: 2px;
    font-size: 10px;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.9), -1px -1px 2px rgba(0,0,0,0.9), 1px -1px 2px rgba(0,0,0,0.9), -1px 1px 2px rgba(0,0,0,0.9);
    position: relative;
    z-index: 10;
    pointer-events: none;
    white-space: nowrap;
    text-align: center;
}

/* Legend Details Accordion */
.legend-details {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--glass-border);
}

.legend-summary {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    outline: none;
    list-style: none; /* Hide default chevron */
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.legend-summary::-webkit-details-marker {
    display: none; /* Hide Chrome/Safari chevron */
}

/* Desktop default static header styles */
@media (min-width: 769px) {
    .legend-summary {
        cursor: default;
        pointer-events: none; /* Make static header on desktop */
        margin-bottom: 12px;
    }
}

.legend-content h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.legend-item {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.color-box {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 3px;
    margin-right: 8px;
}

/* Weather Panel */
.weather-panel {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 16px;
    min-width: 300px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    max-height: 50vh;
    overflow-y: auto;
}

.weather-panel h2 {
    font-size: 1.1rem;
    color: var(--accent-color);
    margin-bottom: 16px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 8px;
}

.weather-card {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.02);
    border-radius: 4px;
    padding: 10px;
    margin-bottom: 10px;
}

.weather-card h4 {
    margin: 0 0 8px 0;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.weather-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.weather-grid span strong {
    color: var(--text-primary);
}

/* Vessel Profile Side Panel */
.vessel-profile-panel {
    position: absolute;
    top: 20px;
    right: -400px; /* Hidden by default */
    width: 340px;
    background: rgba(20, 20, 24, 0.85); /* Darker, more opaque background */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    padding: 14px;
    color: var(--text-primary);
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: right 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    overflow-y: auto;
    max-height: calc(100vh - 40px);
}

.vessel-profile-panel.open {
    right: 20px;
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s ease;
}

.close-btn:hover {
    color: #e74c3c;
}

.vp-section {
    margin-bottom: 18px;
    padding-bottom: 13px;
    border-bottom: 1px solid var(--glass-border);
}

.vp-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.vp-section h3 {
    margin: 0 0 10px 0;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.vp-grid {
    display: grid;
    grid-template-columns: auto 1fr auto 1fr;
    column-gap: 15px;
    row-gap: 8px;
    font-size: 0.95rem;
}

.vp-grid span:nth-child(odd) {
    color: var(--text-secondary);
}

.vp-grid span:nth-child(even) {
    color: var(--text-primary);
    font-weight: 500;
}

/* Settings Modal */
#settings-toggle:hover {
    color: var(--accent-color) !important;
    transform: rotate(30deg);
}

.settings-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.settings-modal.open {
    display: flex;
}

.settings-content {
    background: rgba(25, 25, 30, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 32px;
    width: 440px; /* Widened slightly to give inputs more breathing room */
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    animation: modal-slide-in 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@keyframes modal-slide-in {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.settings-content h2 {
    margin-bottom: 24px;
    font-size: 1.4rem;
    color: var(--text-primary);
}

.settings-section {
    margin-bottom: 24px;
}

.settings-section h3 {
    font-size: 0.9rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.settings-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); /* Force columns to constrain children */
    gap: 16px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0; /* Enforce shrinking capability on grid item */
}

.input-group label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.input-group input {
    width: 100%;
    box-sizing: border-box; /* Guarantee padding is included in the width */
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.save-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent-color);
    border: none;
    border-radius: 10px;
    color: #1e1e24;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
}

.save-btn:hover {
    background-color: #00b8cc;
    transform: translateY(-2px);
}

.save-btn:active {
    transform: translateY(0);
}

/* ==========================================================================
   Responsive Mobile Redesign Queries (< 768px)
   ========================================================================== */
@media (max-width: 768px) {
    /* 1. Main Dashboard Overlay Panel */
    .overlay-panel {
        position: fixed;
        top: 10px;
        left: 10px;
        right: 10px;
        width: auto;
        max-width: none;
        padding: 12px 16px;
        border-radius: 12px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    }
    
    .overlay-panel h1 {
        font-size: 1.15rem;
        margin-bottom: 8px;
        display: inline-block;
        vertical-align: middle;
    }
    
    .status-indicator {
        margin-bottom: 8px;
        gap: 6px;
        font-size: 0.8rem;
    }
    
    .status-indicator button {
        font-size: 1rem;
    }
    
    .stats {
        gap: 8px;
        margin-bottom: 4px;
    }
    
    .stat-label {
        font-size: 0.65rem;
    }
    
    .stat-value {
        font-size: 1.05rem;
    }
    
    /* Collapsible Legend Details Summary */
    .legend-details {
        margin-top: 8px;
        padding-top: 8px;
        border-top: 1px solid var(--glass-border);
    }
    
    .legend-summary {
        font-size: 0.8rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        padding: 4px 0;
    }
    
    .legend-summary::after {
        content: "▼";
        font-size: 0.7rem;
        color: var(--accent-color);
        transition: transform 0.3s ease;
        margin-left: auto;
    }
    
    .legend-details[open] .legend-summary::after {
        transform: rotate(-180deg);
    }
    
    .legend-content {
        margin-top: 8px;
        max-height: 200px;
        overflow-y: auto;
        padding-right: 4px;
    }
    
    .legend-content h3 {
        font-size: 0.75rem;
        margin-bottom: 6px;
    }
    
    .legend-item {
        font-size: 0.75rem;
        margin-bottom: 6px;
    }
    
    .color-box {
        width: 10px;
        height: 10px;
    }

    /* 2. Vessel Profile Slide-Up Bottom Sheet */
    .vessel-profile-panel {
        position: fixed;
        bottom: -100%; /* Fully off screen */
        right: 0 !important;
        left: 0 !important;
        top: auto !important;
        width: 100% !important;
        max-width: none !important;
        height: auto !important;
        max-height: 60vh !important;
        border-radius: 20px 20px 0 0 !important;
        padding: 16px 20px 24px 20px !important;
        box-shadow: 0 -10px 40px rgba(0,0,0,0.5) !important;
        background: rgba(18, 18, 22, 0.95) !important; /* Slightly more opaque for overlaying map */
        backdrop-filter: blur(20px) !important;
        -webkit-backdrop-filter: blur(20px) !important;
        transition: bottom 0.4s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
        border: 1px solid var(--glass-border) !important;
        border-bottom: none !important;
    }
    
    .vessel-profile-panel.open {
        bottom: 0 !important;
        right: 0 !important;
    }
    
    .vessel-profile-panel h2 {
        font-size: 1.25rem !important;
        margin-top: 8px !important;
    }
    
    .vessel-profile-panel h4 {
        font-size: 0.85rem !important;
        margin-bottom: 12px !important;
    }
    
    .vessel-profile-panel .close-btn {
        top: 10px !important;
        right: 15px !important;
        font-size: 1.3rem !important;
    }
    
    .vp-section {
        margin-bottom: 12px !important;
        padding-bottom: 8px !important;
    }
    
    .vp-section h3 {
        font-size: 0.75rem !important;
        margin-bottom: 6px !important;
    }
    
    .vp-grid {
        grid-template-columns: auto 1fr !important;
        column-gap: 12px !important;
        row-gap: 4px !important;
        font-size: 0.85rem !important;
    }

    /* 3. Settings Modal */
    .settings-content {
        width: 90% !important;
        max-width: 380px !important;
        padding: 20px !important;
        border-radius: 16px !important;
    }
    
    .settings-content h2 {
        font-size: 1.2rem !important;
        margin-bottom: 16px !important;
    }
    
    .settings-section {
        margin-bottom: 16px !important;
    }
    
    .settings-section h3 {
        font-size: 0.8rem !important;
        margin-bottom: 8px !important;
    }
    
    .settings-grid {
        grid-template-columns: 1fr !important; /* Stack columns on mobile */
        gap: 12px !important;
    }
    
    .settings-content .close-btn {
        top: 12px !important;
        right: 15px !important;
        font-size: 1.3rem !important;
    }
    
    .save-btn {
        padding: 10px !important;
        font-size: 0.95rem !important;
    }

    /* 4. Weather Panel */
    .weather-panel {
        left: 10px !important;
        right: 10px !important;
        bottom: 10px !important;
        width: auto !important;
        min-width: 0 !important;
        padding: 12px 16px !important;
        border-radius: 12px !important;
        max-height: 25vh !important;
    }
    
    .weather-panel h2 {
        font-size: 0.95rem !important;
        margin-bottom: 10px !important;
        padding-bottom: 6px !important;
    }
    
    .weather-card {
        padding: 8px !important;
        margin-bottom: 8px !important;
    }
    
    .weather-card h4 {
        font-size: 0.85rem !important;
        margin-bottom: 6px !important;
    }
    
    .weather-grid {
        font-size: 0.75rem !important;
        gap: 4px !important;
    }

    /* 5. Leaflet Zoom Controls */
    .leaflet-control-zoom {
        display: none !important; /* Hide zoom controls on mobile to maximize map viewport and prevent finger slips */
    }
}

.panel-summary {
    cursor: pointer;
    user-select: none;
    outline: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
}
.panel-summary::-webkit-details-marker {
    display: none;
}
.panel-summary::after {
    content: '▼';
    font-size: 0.8rem;
    color: var(--accent-color);
    transition: transform 0.3s;
}
details[open] .panel-summary::after {
    transform: rotate(180deg);
}
.panel-content {
    margin-top: 16px;
    animation: fadeIn 0.3s ease-out;
}