/* hwagryul.com - Forest Station HUD */

:root {
    --obsidian-forest: #071209;
    --deep-canopy: #0d1f17;
    --mid-canopy: #132b21;
    --sage-mist: #7a9b82;
    --pale-lichen: #c8d9c4;
    --white: #ffffff;
    --ember-gold: #e8c47a;
    --ember-copper: #c4703a;
    --verdant-pulse: #4a9e6e;

    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Source Sans 3', sans-serif;
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--obsidian-forest);
    color: var(--pale-lichen);
    font-family: var(--font-mono);
}

/* Terrain Layer */
.terrain-layer {
    position: fixed;
    inset: 0;
    z-index: 0;
    background: radial-gradient(ellipse at 30% 70%, var(--mid-canopy) 0%, var(--deep-canopy) 40%, var(--obsidian-forest) 100%);
}

/* Grain Overlay */
.grain-overlay {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 1200ms ease;
}

.grain-overlay::before {
    content: '';
    position: absolute;
    inset: -50%;
    width: 200%;
    height: 200%;
    filter: url(#grain);
    opacity: 0.5;
}

.grain-svg {
    position: absolute;
    width: 0;
    height: 0;
}

/* Corner Marks */
.corner-marks {
    position: fixed;
    inset: 0;
    z-index: 5;
    pointer-events: none;
}

.corner-mark {
    position: absolute;
    width: 24px;
    height: 24px;
    border-color: var(--sage-mist);
    border-style: solid;
    opacity: 0.4;
}

.corner-mark.tl { top: 16px; left: 16px; border-width: 1px 0 0 1px; }
.corner-mark.tr { top: 16px; right: 16px; border-width: 1px 1px 0 0; }
.corner-mark.bl { bottom: 16px; left: 16px; border-width: 0 0 1px 1px; }
.corner-mark.br { bottom: 16px; right: 16px; border-width: 0 1px 1px 0; }

/* HUD Container */
.hud-container {
    position: fixed;
    inset: 0;
    z-index: 10;
    display: grid;
    grid-template-columns: 200px 1fr 1fr;
    grid-template-rows: auto 1fr auto;
    gap: 20px;
    padding: 48px;
}

/* HUD Panels */
.hud-panel {
    position: relative;
    background: rgba(13, 31, 23, 0.85);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(122, 155, 130, 0.25);
    padding: 20px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 600ms ease, transform 600ms ease;
}

.hud-panel.visible {
    opacity: 1;
    transform: translateY(0);
}

.panel-border {
    position: absolute;
    inset: -1px;
    border: 1px solid transparent;
    pointer-events: none;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(122, 155, 130, 0.15);
}

.panel-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--sage-mist);
    text-transform: uppercase;
}

.panel-indicator {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--sage-mist);
    opacity: 0.5;
}

.panel-indicator.active {
    background: var(--verdant-pulse);
    opacity: 1;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 4px var(--verdant-pulse); }
    50% { box-shadow: 0 0 12px var(--verdant-pulse); }
}

.panel-timestamp {
    font-size: 0.65rem;
    color: var(--sage-mist);
    opacity: 0.7;
}

.panel-content {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--pale-lichen);
}

/* Nav Panel */
.nav-panel {
    grid-column: 1;
    grid-row: 1 / -1;
    align-self: start;
}

.nav-links {
    list-style: none;
}

.nav-links li {
    margin-bottom: 12px;
}

.nav-links a {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--sage-mist);
    text-decoration: none;
    transition: color 300ms ease;
    display: block;
    padding: 4px 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--ember-gold);
}

/* Hero Panel */
.hero-panel {
    grid-column: 2 / 4;
    grid-row: 1;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.site-title {
    font-family: var(--font-mono);
    font-size: clamp(1.5rem, 3.5vw, 3rem);
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.site-subtitle {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 400;
    color: var(--sage-mist);
    letter-spacing: 0.2em;
    margin-bottom: 12px;
}

.hero-tagline {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--pale-lichen);
    opacity: 0.8;
}

.hero-coordinates {
    margin-top: 20px;
    display: flex;
    gap: 24px;
}

.coord {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--sage-mist);
    opacity: 0.6;
    letter-spacing: 0.05em;
}

/* Observe Panel */
.observe-panel {
    grid-column: 2;
    grid-row: 2;
}

.observe-text {
    margin-bottom: 16px;
}

.ember-viz {
    border: 1px solid rgba(122, 155, 130, 0.15);
    border-radius: 2px;
    overflow: hidden;
}

#emberCanvas {
    display: block;
    width: 100%;
    height: 120px;
}

/* Readings Panel */
.readings-panel {
    grid-column: 3;
    grid-row: 2;
}

.reading-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(122, 155, 130, 0.1);
}

.reading-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--sage-mist);
    letter-spacing: 0.05em;
}

.reading-value {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--ember-gold);
}

.reading-bar {
    margin-top: 16px;
    height: 3px;
    background: rgba(122, 155, 130, 0.15);
    border-radius: 2px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    width: 72%;
    background: linear-gradient(90deg, var(--verdant-pulse), var(--ember-gold));
    border-radius: 2px;
    transition: width 1s ease;
}

/* Log Panel */
.log-panel {
    grid-column: 2;
    grid-row: 3;
}

.log-entries {
    max-height: 140px;
    overflow-y: auto;
}

.log-entry {
    display: flex;
    gap: 12px;
    padding: 4px 0;
    font-size: 0.75rem;
}

.log-time {
    font-family: var(--font-mono);
    color: var(--sage-mist);
    opacity: 0.6;
    white-space: nowrap;
}

.log-msg {
    font-family: var(--font-mono);
    color: var(--pale-lichen);
    opacity: 0.85;
}

/* Signal Panel */
.signal-panel {
    grid-column: 3;
    grid-row: 3;
}

.signal-text {
    font-size: 0.85rem;
    margin-bottom: 16px;
    opacity: 0.85;
}

.signal-input-group {
    display: flex;
    gap: 8px;
}

.signal-input {
    flex: 1;
    background: rgba(7, 18, 9, 0.8);
    border: 1px solid rgba(122, 155, 130, 0.3);
    padding: 8px 12px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--white);
    outline: none;
    transition: border-color 300ms ease;
}

.signal-input::placeholder {
    color: var(--sage-mist);
    opacity: 0.4;
}

.signal-input:focus {
    border-color: var(--ember-gold);
}

.signal-btn {
    background: transparent;
    border: 1px solid var(--ember-gold);
    color: var(--ember-gold);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    padding: 8px 16px;
    cursor: pointer;
    transition: background 300ms ease, color 300ms ease;
}

.signal-btn:hover {
    background: var(--ember-gold);
    color: var(--obsidian-forest);
}

.signal-status {
    margin-top: 8px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--verdant-pulse);
    min-height: 1.2em;
}

/* Scrollbar */
.log-entries::-webkit-scrollbar {
    width: 3px;
}

.log-entries::-webkit-scrollbar-track {
    background: transparent;
}

.log-entries::-webkit-scrollbar-thumb {
    background: var(--sage-mist);
    opacity: 0.3;
    border-radius: 2px;
}

/* Responsive */
@media (max-width: 900px) {
    .hud-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        padding: 24px;
        overflow-y: auto;
    }

    .nav-panel {
        grid-column: 1;
        grid-row: auto;
    }

    .hero-panel,
    .observe-panel,
    .readings-panel,
    .log-panel,
    .signal-panel {
        grid-column: 1;
        grid-row: auto;
    }
}