/* =====================================================================
   iggi.dev — v2
   Design language: playful HUD-overlay developer toolkit for procedural
   moss generation. Honeyed-neutral forest palette + handwritten logotype
   + sci-fi HUD chrome + drifting moss particles.
   ===================================================================== */

:root {
    /* Palette (from DESIGN.md) */
    --forest-deep:   #2A3A20;
    --forest-mid:    #3A4A30;
    --hud-panel:     rgba(30, 40, 25, 0.80);
    --hud-panel-active: rgba(30, 40, 25, 0.92);
    --moss-bright:   #A0D090;
    --moss-deep:     #60B060;
    --honeyed:       #D4B880;
    --glitch-amber:  #E0A040;
    --hud-bracket:   #80A070;
    --hud-bracket-bright: #A0D090;
    --text-light:    #D0D8C0;
    --text-dim:      #8A9888;

    /* Typography */
    --font-display: "Caveat", cursive;
    --font-body:    "Nunito Sans", system-ui, sans-serif;
    --font-code:    "Fira Code", "JetBrains Mono", monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
    font-family: var(--font-body);
    font-size: clamp(14px, 1vw, 16px);
    line-height: 1.75;
    color: var(--text-light);
    background: var(--forest-deep);
    position: relative;
}

/* =================================================================
   BACKGROUND LAYER
   ================================================================= */
#bg-layer {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

#forest-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 25%, #4A5A38 0%, transparent 55%),
        radial-gradient(ellipse at 75% 85%, #2C3818 0%, transparent 60%),
        linear-gradient(180deg, var(--forest-mid) 0%, var(--forest-deep) 100%);
}

#hud-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(128, 160, 112, 0.10) 1px, transparent 1px),
        linear-gradient(90deg, rgba(128, 160, 112, 0.10) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0;
    animation: gridFadeIn 800ms ease-out 100ms forwards;
}

#particle-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

#vignette {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.55) 100%);
    pointer-events: none;
}

@keyframes gridFadeIn { to { opacity: 1; } }

/* =================================================================
   HUD PANELS — common chrome
   ================================================================= */
.hud-panel {
    position: fixed;
    z-index: 10;
    background: var(--hud-panel);
    backdrop-filter: blur(8px) saturate(110%);
    -webkit-backdrop-filter: blur(8px) saturate(110%);
    border: 1px solid rgba(128, 160, 112, 0.18);
    box-shadow:
        0 0 0 1px rgba(160, 208, 144, 0.04) inset,
        0 18px 50px rgba(0, 0, 0, 0.45);
}

/* HUD corner brackets — L-shape, drawn with two thin pseudo-elements */
.bracket {
    position: absolute;
    width: 14px;
    height: 14px;
    pointer-events: none;
    color: var(--hud-bracket);
}
.bracket::before,
.bracket::after {
    content: "";
    position: absolute;
    background: currentColor;
    transition: background 220ms ease;
}
.bracket::before { width: 14px; height: 1px; }
.bracket::after  { width: 1px;  height: 14px; }

.bracket.tl { top: -1px;    left: -1px;   }
.bracket.tl::before { top: 0; left: 0; }
.bracket.tl::after  { top: 0; left: 0; }

.bracket.tr { top: -1px;    right: -1px;  }
.bracket.tr::before { top: 0; right: 0; }
.bracket.tr::after  { top: 0; right: 0; }

.bracket.bl { bottom: -1px; left: -1px;   }
.bracket.bl::before { bottom: 0; left: 0; }
.bracket.bl::after  { bottom: 0; left: 0; }

.bracket.br { bottom: -1px; right: -1px;  }
.bracket.br::before { bottom: 0; right: 0; }
.bracket.br::after  { bottom: 0; right: 0; }

.hud-panel:hover .bracket,
.hud-panel.is-active .bracket {
    color: var(--hud-bracket-bright);
}

/* =================================================================
   TOP BAR
   ================================================================= */
#hud-topbar {
    top: 12px;
    left: 12px;
    right: 12px;
    height: 48px;
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 0 18px;
    transform: translateY(-80px);
    opacity: 0;
    animation: slideDown 480ms cubic-bezier(.2,.8,.2,1) 250ms forwards;
}
@keyframes slideDown { to { transform: translateY(0); opacity: 1; } }

.topbar-left {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-shrink: 0;
}
.logotype {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(24px, 3.5vw, 36px);
    line-height: 1;
    color: var(--honeyed);
    letter-spacing: 0.5px;
    text-shadow: 0 0 16px rgba(212, 184, 128, 0.25);
}
.logotype-sub {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 16px;
    color: var(--moss-bright);
    opacity: 0.78;
}

.topbar-nav {
    display: flex;
    gap: 4px;
    flex: 1;
    justify-content: center;
}
.nav-tab {
    background: transparent;
    border: 1px solid rgba(128, 160, 112, 0.22);
    color: var(--text-dim);
    font-family: var(--font-code);
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 6px 14px;
    cursor: pointer;
    border-radius: 2px;
    transition: all 180ms ease;
    position: relative;
}
.nav-tab:hover {
    color: var(--moss-bright);
    border-color: var(--hud-bracket-bright);
    background: rgba(160, 208, 144, 0.06);
}
.nav-tab.active {
    color: var(--honeyed);
    border-color: var(--honeyed);
    background: rgba(212, 184, 128, 0.08);
    box-shadow: 0 0 18px rgba(212, 184, 128, 0.12) inset;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}
.hud-readout {
    font-family: var(--font-code);
    font-size: 11px;
    color: var(--moss-bright);
    letter-spacing: 0.05em;
    padding: 3px 8px;
    border: 1px solid rgba(160, 208, 144, 0.22);
    border-radius: 2px;
    background: rgba(0, 0, 0, 0.20);
}

.hud-button {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid var(--hud-bracket);
    color: var(--moss-bright);
    font-family: var(--font-code);
    font-size: 13px;
    cursor: pointer;
    transition: all 200ms ease;
}
.hud-button:hover {
    background: var(--moss-bright);
    color: var(--forest-deep);
    box-shadow: 0 0 18px rgba(160, 208, 144, 0.55);
}

/* =================================================================
   MAIN PANEL — right side documentation
   ================================================================= */
#hud-main-panel {
    top: 76px;
    right: 12px;
    bottom: 224px;
    width: 50%;
    min-width: 380px;
    display: flex;
    flex-direction: column;
    transform: translateX(110%);
    opacity: 0;
    animation: slideInRight 540ms cubic-bezier(.2,.8,.2,1) 350ms forwards;
}
@keyframes slideInRight { to { transform: translateX(0); opacity: 1; } }

.panel-header {
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    border-bottom: 1px solid rgba(128, 160, 112, 0.18);
    font-family: var(--font-code);
    font-size: 11px;
    color: var(--moss-bright);
    letter-spacing: 0.04em;
}
.panel-title { color: var(--honeyed); }
.panel-coords, .panel-status { color: var(--text-dim); }
.panel-status {
    color: var(--glitch-amber);
    padding: 2px 8px;
    border: 1px solid var(--glitch-amber);
    border-radius: 2px;
    animation: livePulse 1.6s ease-in-out infinite;
}
@keyframes livePulse {
    0%, 100% { opacity: 0.6; box-shadow: 0 0 0 rgba(224, 160, 64, 0.0); }
    50%      { opacity: 1.0; box-shadow: 0 0 14px rgba(224, 160, 64, 0.30); }
}

.panel-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 22px 26px 30px 26px;
    scrollbar-color: var(--hud-bracket) transparent;
    scrollbar-width: thin;
}
.panel-scroll::-webkit-scrollbar { width: 8px; }
.panel-scroll::-webkit-scrollbar-track { background: rgba(0,0,0,0.2); }
.panel-scroll::-webkit-scrollbar-thumb {
    background: var(--hud-bracket);
    border-radius: 4px;
}

.tab-pane { display: none; }
.tab-pane.active { display: block; animation: bounceFadeIn 420ms cubic-bezier(.2,1.4,.4,1); }

@keyframes bounceFadeIn {
    0%   { opacity: 0; transform: translateY(14px) scale(0.985); }
    60%  { opacity: 1; transform: translateY(-3px) scale(1.005); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
}

.docs-h1 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(34px, 4vw, 52px);
    color: var(--honeyed);
    line-height: 1.05;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}
.docs-h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(22px, 2.4vw, 30px);
    color: var(--moss-bright);
    margin: 28px 0 10px;
    letter-spacing: 0.3px;
}
.lead {
    color: var(--text-light);
    margin-bottom: 12px;
    max-width: 56ch;
}

.code-block {
    position: relative;
    margin: 12px 0 18px;
    background: rgba(10, 18, 8, 0.70);
    border: 1px solid rgba(128, 160, 112, 0.22);
    border-radius: 3px;
    padding: 28px 16px 14px 16px;
    overflow-x: auto;
}
.code-block.glitch { animation: codeGlitch 100ms steps(2, end); }
@keyframes codeGlitch {
    0%   { transform: translateX(0);   filter: none; }
    25%  { transform: translateX(-3px); filter: hue-rotate(-30deg) saturate(1.4); }
    50%  { transform: translateX(2px);  filter: hue-rotate(20deg)  saturate(1.4); }
    75%  { transform: translateX(-1px); filter: hue-rotate(-10deg); }
    100% { transform: translateX(0);   filter: none; }
}

.code-lang {
    position: absolute;
    top: 6px; left: 14px;
    font-family: var(--font-code);
    font-size: 10px;
    color: var(--glitch-amber);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.code-block pre, .code-block code {
    font-family: var(--font-code);
    font-size: 13px;
    line-height: 1.55;
    color: var(--moss-bright);
    white-space: pre;
}
.code-block code .keyword { color: var(--glitch-amber); }
.code-block code .param   { color: var(--honeyed); cursor: help; }
.code-block code .string  { color: #C4D8B0; }
.code-block code .num     { color: #E8C898; }
.code-block code .comment { color: var(--text-dim); font-style: italic; }
.code-block code .cursor {
    display: inline-block;
    width: 0.55ch;
    background: var(--moss-bright);
    color: var(--moss-bright);
    animation: blink 700ms steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Parameter list (docs) */
.param-list { list-style: none; margin: 8px 0 12px; }
.param-list li {
    display: grid;
    grid-template-columns: 1fr 1.1fr 2.5fr;
    gap: 12px;
    padding: 7px 10px;
    border-bottom: 1px dashed rgba(128, 160, 112, 0.20);
    align-items: baseline;
}
.param-list li:last-child { border-bottom: none; }
.param-key {
    font-family: var(--font-code);
    color: var(--honeyed);
    font-size: 13px;
}
.param-val {
    font-family: var(--font-code);
    color: var(--moss-bright);
    font-size: 12px;
}
.param-doc { color: var(--text-light); font-size: 13px; }

/* Sliders */
.slider-group {
    margin-top: 10px;
    padding: 14px 16px;
    background: rgba(10, 18, 8, 0.45);
    border: 1px solid rgba(128, 160, 112, 0.15);
    border-radius: 3px;
}
.slider-row {
    display: grid;
    grid-template-columns: 90px 1fr 70px;
    gap: 12px;
    align-items: center;
    margin-bottom: 10px;
}
.slider-row:last-child { margin-bottom: 0; }
.slider-label {
    font-family: var(--font-code);
    font-size: 12px;
    color: var(--honeyed);
    letter-spacing: 0.04em;
}
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--moss-bright) 0%, var(--moss-bright) var(--p, 50%), rgba(128, 160, 112, 0.25) var(--p, 50%), rgba(128, 160, 112, 0.25) 100%);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}
.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--honeyed);
    border: 2px solid var(--forest-deep);
    box-shadow: 0 0 10px rgba(212, 184, 128, 0.55);
    cursor: grab;
}
.slider::-moz-range-thumb {
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--honeyed);
    border: 2px solid var(--forest-deep);
    box-shadow: 0 0 10px rgba(212, 184, 128, 0.55);
    cursor: grab;
}
.slider-readout {
    font-family: var(--font-code);
    font-size: 12px;
    color: var(--moss-bright);
    text-align: right;
    transition: color 200ms ease;
}
.slider-readout.bumping { color: var(--glitch-amber); }

/* API rows */
.api-row {
    display: grid;
    grid-template-columns: 230px 1fr;
    gap: 14px;
    padding: 9px 8px;
    border-bottom: 1px dashed rgba(128, 160, 112, 0.20);
}
.api-sig {
    font-family: var(--font-code);
    font-size: 13px;
    color: var(--honeyed);
}
.api-doc { color: var(--text-light); font-size: 13px; }

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    margin-top: 12px;
}
.gal-tile {
    position: relative;
    background: rgba(10, 18, 8, 0.6);
    border: 1px solid rgba(128, 160, 112, 0.22);
    border-radius: 3px;
    padding: 8px;
    aspect-ratio: 1;
    overflow: hidden;
    cursor: pointer;
    transition: transform 220ms ease, border-color 220ms ease;
}
.gal-tile:hover {
    transform: translateY(-3px);
    border-color: var(--moss-bright);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3), 0 0 0 1px rgba(160, 208, 144, 0.25) inset;
}
.gal-label {
    font-family: var(--font-code);
    font-size: 10px;
    color: var(--honeyed);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    position: relative;
    z-index: 2;
}
.gal-art {
    position: absolute;
    inset: 24px 8px 8px 8px;
    border-radius: 2px;
    background-color: var(--forest-mid);
    overflow: hidden;
}
.gal-art::before, .gal-art::after {
    content: "";
    position: absolute;
    inset: 0;
}
.gal-art.ruin::before {
    background:
        radial-gradient(circle at 30% 60%, var(--moss-bright) 0%, transparent 25%),
        radial-gradient(circle at 70% 40%, var(--moss-deep)   0%, transparent 30%),
        repeating-linear-gradient(45deg, #5a5040 0 14px, #44382a 14px 28px);
}
.gal-art.path::before {
    background:
        radial-gradient(circle at 50% 50%, var(--moss-bright) 0%, transparent 22%),
        repeating-radial-gradient(circle at 0 0, #6a5a48 0 14px, #54483a 14px 18px);
}
.gal-art.field::before {
    background:
        radial-gradient(ellipse at 50% 100%, var(--moss-bright) 0%, var(--moss-deep) 50%, var(--forest-mid) 100%),
        linear-gradient(180deg, rgba(0,0,0,0) 60%, rgba(0,0,0,0.4) 100%);
}
.gal-art.rooftop::before {
    background:
        repeating-linear-gradient(180deg, #4a3a28 0 12px, #3a2c1c 12px 14px),
        radial-gradient(circle at 30% 30%, var(--moss-deep) 0%, transparent 35%);
    background-blend-mode: screen;
}
.gal-art.boulder::before {
    background:
        radial-gradient(circle at 60% 40%, var(--moss-bright) 0%, transparent 30%),
        radial-gradient(circle at 30% 70%, var(--moss-deep)   0%, transparent 40%),
        radial-gradient(circle at 50% 50%, #7a7060 0%, #4a4030 100%);
}
.gal-art.trunk::before {
    background:
        repeating-linear-gradient(90deg, #5a4a30 0 8px, #44381e 8px 12px),
        radial-gradient(circle at 50% 60%, var(--moss-bright) 0%, transparent 28%);
}
.gal-tile.is-poking .gal-art::after {
    background: radial-gradient(circle at var(--px,50%) var(--py,50%), rgba(160, 208, 144, 0.55) 0%, transparent 30%);
}

/* =================================================================
   STATS PANEL (bottom-left)
   ================================================================= */
#hud-stats-panel {
    bottom: 12px;
    left: 12px;
    width: 30%;
    min-width: 280px;
    height: 200px;
    transform: translateY(140%);
    opacity: 0;
    animation: riseUp 460ms cubic-bezier(.2,.8,.2,1) 500ms forwards;
}
@keyframes riseUp { to { transform: translateY(0); opacity: 1; } }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 14px;
}
.stat {
    background: rgba(10, 18, 8, 0.45);
    border: 1px solid rgba(128, 160, 112, 0.16);
    border-radius: 3px;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.stat-label {
    font-family: var(--font-code);
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dim);
}
.stat-value {
    font-family: var(--font-code);
    font-size: 17px;
    font-weight: 500;
    color: var(--moss-bright);
    transition: color 220ms ease;
}
.stat-value.bumping {
    color: var(--glitch-amber);
    animation: bumpPop 380ms cubic-bezier(.4,1.6,.5,1);
}
@keyframes bumpPop {
    0%   { transform: scale(0.5); }
    60%  { transform: scale(1.12); }
    100% { transform: scale(1); }
}

/* =================================================================
   MINIMAP PANEL (bottom-right)
   ================================================================= */
#hud-minimap-panel {
    bottom: 12px;
    right: 12px;
    width: 220px;
    height: 200px;
    display: flex;
    flex-direction: column;
    opacity: 0;
    animation: fadeInLast 360ms ease-out 800ms forwards;
}
@keyframes fadeInLast { to { opacity: 1; } }

.minimap-stage {
    flex: 1;
    position: relative;
    margin: 8px;
    background: var(--forest-deep);
    border: 1px solid rgba(128, 160, 112, 0.18);
    border-radius: 2px;
    overflow: hidden;
}
#minimap-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}
.minimap-cursor {
    position: absolute;
    width: 10px; height: 10px;
    border: 1.5px solid var(--honeyed);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(212, 184, 128, 0.7);
    pointer-events: none;
    transform: translate(-50%, -50%);
    transition: left 120ms linear, top 120ms linear;
    left: 50%; top: 50%;
}

/* =================================================================
   INFO OVERLAY
   ================================================================= */
#info-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(10, 18, 8, 0.65);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 200ms ease;
}
#info-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.info-card {
    position: relative;
    padding: 36px 44px 32px;
    max-width: 520px;
    width: 92%;
    transform: scale(0.94);
    transition: transform 280ms cubic-bezier(.3,1.4,.4,1);
}
#info-overlay:not(.hidden) .info-card {
    transform: scale(1);
}
.info-close {
    position: absolute;
    top: 8px; right: 12px;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
    transition: color 180ms ease;
}
.info-close:hover { color: var(--glitch-amber); }
.info-card h2 {
    font-family: var(--font-display);
    font-size: 44px;
    color: var(--honeyed);
    margin-bottom: 10px;
}
.info-card p { margin-bottom: 12px; }
.info-card em { color: var(--moss-bright); font-style: italic; }
.info-credits {
    font-family: var(--font-code);
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.85;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px dashed rgba(128, 160, 112, 0.25);
}

/* =================================================================
   RESPONSIVE
   ================================================================= */
@media (max-width: 1024px) {
    #hud-main-panel {
        width: 58%;
        bottom: 220px;
    }
    #hud-stats-panel {
        width: 38%;
    }
}
@media (max-width: 800px) {
    html, body { overflow: auto; }
    #hud-topbar {
        flex-wrap: wrap;
        height: auto;
        padding: 10px 14px;
        gap: 12px;
    }
    .topbar-nav { order: 3; flex-basis: 100%; justify-content: flex-start; flex-wrap: wrap; }
    #hud-main-panel {
        position: relative;
        top: auto; right: auto; bottom: auto;
        width: calc(100% - 24px);
        margin: 90px 12px 12px;
        height: 60vh;
        transform: none;
        opacity: 1;
        animation: none;
    }
    #hud-stats-panel,
    #hud-minimap-panel {
        position: relative;
        bottom: auto; left: auto; right: auto;
        width: calc(100% - 24px);
        margin: 0 12px 12px;
        transform: none;
        opacity: 1;
        animation: none;
    }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}