:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --text-primary: #e8e8ed;
    --text-secondary: #8888a0;
    --text-tertiary: #505068;
    --accent-primary: #4a9eff;
    --accent-glow: rgba(74, 158, 255, 0.4);
    --accent-hike: #2ecc71;
    --line-color: rgba(136, 136, 160, 0.2);
    --line-active: rgba(136, 136, 160, 0.5);
    --bracket-color: rgba(136, 136, 160, 0.4);
    --font-mono: 'Space Mono', monospace;
    --font-sans: 'Inter', sans-serif;
    --font-jp: 'Noto Sans JP', sans-serif;
    --text-xs: 0.75rem;
    --text-sm: 0.9rem;
    --text-base: 1.1rem;
    --text-lg: 1.35rem;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --nav-height: 56px;
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--space-8);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line-color);
    z-index: 100;
    font-family: var(--font-mono);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.nav-links a {
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-secondary);
    position: relative;
    transition: color 0.2s;
    padding: var(--space-1) 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--accent-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a:hover::after {
    transform: scaleX(1);
}

.nav-links a.active {
    color: var(--accent-primary);
}

.nav-links a.active::after {
    transform: scaleX(1);
}

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--line-color);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
    padding: var(--space-1) var(--space-3);
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.nav-toggle:hover {
    color: var(--text-primary);
    border-color: var(--line-active);
}

/* ---- Shared nav: width-lock + EN/JP anchored right ---- */
.site-nav .nav-links a.text {
    display: inline-grid;
    grid-template-areas: "stack";
    justify-items: center;
}
.site-nav .nav-links a.text > span {
    grid-area: stack;
    text-align: center;
    white-space: nowrap;
}
.site-nav .nav-links a.text > .englishText,
.site-nav .nav-links a.text > .japaneseText {
    display: block;
    visibility: hidden;
    pointer-events: none;
}
.site-nav .nav-links .js-translate {
    margin-left: var(--space-6);
}

.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 15, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 99;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.nav-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.nav-overlay a {
    font-family: var(--font-mono);
    font-size: var(--text-lg);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.nav-overlay a:hover {
    color: var(--accent-primary);
}

.nav-overlay-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-8);
    background: none;
    border: 1px solid var(--line-color);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
    padding: var(--space-1) var(--space-3);
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.nav-overlay-close:hover {
    color: var(--text-primary);
    border-color: var(--line-active);
}

/* ============================================================
   MAIN LAYOUT — split screen
   ============================================================ */
main {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 55%;
    height: calc(100vh - var(--nav-height));
    z-index: 1;
}

/* ============================================================
   TERRAIN PANEL
   ============================================================ */
.terrain-panel {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 0 var(--space-6) var(--space-6) var(--space-6);
    gap: var(--space-4);
}

.terrain-header {
    display: flex;
    align-items: center;
    padding: var(--space-3) var(--space-6);
    border-bottom: 1px solid var(--line-color);
    flex-shrink: 0;
    gap: var(--space-4);
    background: var(--bg-primary);
    z-index: 2;
}

.terrain-title {
    display: flex;
    gap: var(--space-4);
    align-items: baseline;
}

.bracket-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

#hikeCount {
    margin-left: auto;
}

/* Hike details (below map) */
.hike-details {
    flex-shrink: 0;
    padding: var(--space-3) var(--space-2);
    border-bottom: 1px solid var(--line-color);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.hike-details.visible {
    opacity: 1;
    transform: translateY(0);
}

.hike-detail-name {
    font-family: var(--font-mono);
    font-size: var(--text-lg);
    color: var(--text-primary);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.hike-detail-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-1) var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
}

.hike-detail-label {
    color: var(--text-tertiary);
}

.hike-detail-value {
    color: var(--text-secondary);
}

.hike-detail-links {
    display: flex;
    gap: var(--space-3);
}

.hike-detail-link {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    border: 1px solid var(--line-color);
    padding: 2px 8px;
    letter-spacing: 0.1em;
    transition: color 0.2s, border-color 0.2s;
}

.hike-detail-link:hover {
    color: var(--accent-hike);
    border-color: var(--accent-hike);
}

/* Hike list */
.hike-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-2) 0;
    scrollbar-width: thin;
    scrollbar-color: var(--text-tertiary) transparent;
}
.hike-list::-webkit-scrollbar {
    width: 4px;
}
.hike-list::-webkit-scrollbar-track {
    background: transparent;
}
.hike-list::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: 2px;
}
.hike-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.hike-list-state {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    padding: var(--space-3) var(--space-2) var(--space-1);
    opacity: 0.6;
}

.hike-list-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-4);
    padding: var(--space-2) var(--space-2);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
    border-left: 2px solid transparent;
}

.hike-list-item:hover {
    color: var(--text-secondary);
    background: rgba(136, 136, 160, 0.05);
}

.hike-list-item.active {
    color: var(--text-primary);
    border-left-color: var(--accent-hike);
}

.hike-list-item-name {
    flex: 1;
}

.hike-list-item-dist {
    color: var(--text-tertiary);
    white-space: nowrap;
}

/* Mapbox terrain viewport */
.terrain-viewport {
    height: 55%;
    flex-shrink: 0;
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--line-color);
}

.terrain-viewport::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    box-shadow: inset 0 0 40px rgba(10, 10, 15, 0.6);
}

.terrain-viewport .mapboxgl-canvas {
    outline: none;
}

/* Override Mapbox attribution to match theme */
.terrain-viewport .mapboxgl-ctrl-attrib {
    background: rgba(10, 10, 15, 0.6) !important;
    font-size: 0.55rem !important;
}

.terrain-viewport .mapboxgl-ctrl-attrib a {
    color: var(--text-tertiary) !important;
}

/* Placeholder when no map loaded */
.terrain-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    z-index: 1;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.terrain-placeholder.hidden {
    opacity: 0;
}

/* ============================================================
   GLOBE (right side)
   ============================================================ */
#globe-container {
    position: fixed;
    top: var(--nav-height);
    right: 0;
    width: 45%;
    height: calc(100vh - var(--nav-height));
    z-index: 0;
    pointer-events: auto;
    border-left: 1px solid var(--line-color);
}

#globe-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

.globe-label {
    position: fixed;
    right: var(--space-8);
    bottom: var(--space-6);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    text-align: right;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    min-height: 1.5em;
    transition: opacity 0.3s;
    z-index: 1;
    opacity: 0;
}

/* ============================================================
   RAW / LIVE STATE TRANSITIONS
   ============================================================ */
.raw-tag {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    opacity: 0.5;
    margin-bottom: var(--space-2);
    padding-left: var(--space-6);
    transition: opacity 0.6s ease, max-height 0.6s ease;
    max-height: 2em;
    overflow: hidden;
}

.state-live .raw-tag {
    opacity: 0;
    max-height: 0;
    margin-bottom: 0;
}

.state-raw .terrain-panel {
    opacity: 0.3;
}

.state-raw #globe-container {
    opacity: 0;
}

.state-live .terrain-panel {
    opacity: 1;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.state-live #globe-container {
    opacity: 1;
    transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   BILINGUAL
   ============================================================ */
.text .englishText,
.text .japaneseText {
    display: none;
}

.japanese .displayText {
    font-family: var(--font-jp);
}

.dud {
    color: var(--text-tertiary);
    opacity: 0.6;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 992px) {
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: block;
    }

    main {
        width: 100%;
        height: calc(100vh - var(--nav-height));
    }

    #globe-container,
    .globe-label {
        display: none;
    }

    .terrain-viewport {
        height: 50%;
    }
}