:root {
    --bg-primary: #0a0e14;
    --bg-secondary: #111821;
    --bg-tertiary: #1a2330;
    --bg-hover: #243340;
    --text-primary: #e0e6ed;
    --text-secondary: #8b9bb4;
    --text-muted: #5a6a80;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border: #1e2838;
    --shadow: rgba(0, 0, 0, 0.4);
    --radius: 8px;
    --radius-sm: 4px;
    --header-height: 48px;
    --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    /* Scale font subtly with viewport — readable on 1366p, not tiny on 4K */
    font-size: clamp(13px, 0.7vw + 10px, 16px);
}

[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9ecef;
    --bg-hover: #dee2e6;
    --text-primary: #1a2330;
    --text-secondary: #495057;
    --text-muted: #6c757d;
    --border: #ced4da;
    --shadow: rgba(0, 0, 0, 0.1);
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
}

.hidden { display: none !important; }

/* Header */
#app-header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    gap: 12px;
    flex-shrink: 0;
    z-index: 1000;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.app-title {
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s;
}

.icon-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Search box */
.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px 12px;
    width: 100%;
    max-width: clamp(280px, 30vw, 520px);
    color: var(--text-muted);
}

.search-box input {
    background: none;
    border: none;
    color: var(--text-primary);
    flex: 1;
    font-size: 13px;
    outline: none;
    cursor: pointer;
}

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

.kbd-hint {
    font-family: var(--font-mono);
    font-size: 11px;
    background: var(--bg-hover);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

/* Main layout */
#app-main {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.map-container {
    flex: 1;
    position: relative;
    min-width: 0;
}

.panels-container {
    width: clamp(320px, 28vw, 560px);
    min-width: 280px;
    max-width: 50vw;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    overflow-x: hidden;
    flex-shrink: 0;
    resize: horizontal;
}

.panels-list {
    padding: 6px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* Multi-column panels on wider screens — more info at once */
@media (min-width: 1280px) {
    .panels-container {
        width: clamp(380px, 32vw, 680px);
    }
    .panels-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 6px;
        align-content: start;
    }
}

@media (min-width: 1536px) {
    .panels-container {
        width: clamp(440px, 34vw, 760px);
    }
    .panels-list {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        padding: 8px;
        gap: 8px;
    }
}

@media (min-width: 1920px) {
    .panels-container {
        width: clamp(480px, 35vw, 840px);
    }
    .panels-list {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
        padding: 8px;
        gap: 8px;
    }
}

@media (min-width: 2560px) {
    .panels-container {
        width: clamp(540px, 36vw, 960px);
    }
    .panels-list {
        grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
        padding: 10px;
        gap: 10px;
    }
}

/* Map */
.map {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
}

.map-controls {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 500;
}

.map-ctrl-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
}

.map-ctrl-btn:hover {
    background: var(--bg-hover);
}

.map-ctrl-btn.active {
    background: var(--accent);
    border-color: var(--accent);
}

/* Command palette */
.command-palette {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 80px;
}

.command-palette-inner {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 100%;
    max-width: 560px;
    box-shadow: 0 8px 32px var(--shadow);
}

#command-input {
    width: 100%;
    background: none;
    border: none;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
    padding: 16px 20px;
    font-size: 16px;
    outline: none;
}

.command-results {
    max-height: 400px;
    overflow-y: auto;
    padding: 8px 0;
}

.command-result {
    padding: 10px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
}

.command-result:hover, .command-result.selected {
    background: var(--bg-hover);
}

.command-result .cmd-icon {
    color: var(--text-muted);
}

.command-result .cmd-label {
    flex: 1;
}

.command-result .cmd-type {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* Layer panel */
.layer-panel {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    width: 320px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    z-index: 900;
    display: flex;
    flex-direction: column;
}

.layer-panel-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.layer-panel-header h2 {
    font-size: 14px;
    font-weight: 600;
}

.layer-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

.layer-group {
    padding: 4px 0;
}

.layer-group-title {
    padding: 6px 16px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.layer-item {
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.layer-item:hover {
    background: var(--bg-hover);
}

.layer-item input[type="checkbox"] {
    accent-color: var(--accent);
}

.layer-item label {
    flex: 1;
    cursor: pointer;
    font-size: 13px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Responsive — progressive enhancement from mobile to ultrawide */

/* Small tablets: split view with thinner sidebar */
@media (min-width: 768px) and (max-width: 1279px) {
    .panels-container {
        width: clamp(300px, 26vw, 460px);
    }
}

/* Laptops (1024-1279): ensure map gets enough room */
@media (min-width: 1024px) {
    .panels-container {
        min-width: 300px;
    }
}

/* Mobile: stack vertically */
@media (max-width: 767px) {
    .panels-container {
        width: 100%;
        max-width: 100%;
        border-left: none;
        border-top: 1px solid var(--border);
    }

    .map-container {
        height: 40vh;
        flex: none;
    }

    #app-main {
        flex-direction: column;
    }

    .header-center { display: none; }
}

/* Alert toast */
.alert-toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    padding: 12px 16px;
    box-shadow: 0 4px 16px var(--shadow);
    z-index: 4000;
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 400px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.alert-toast-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.alert-toast-type {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent);
}

.alert-toast-title {
    font-size: 13px;
    color: var(--text-primary);
}

.alert-toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
}

.alert-toast-close:hover {
    color: var(--text-primary);
}