/* iggi.dev - Procedural Moss Generation Toolkit */
/* HUD-overlay game engine interface */

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

:root {
    --forest-deep: #2A3A20;
    --forest-mid: #3A4A30;
    --hud-panel: rgba(30, 40, 25, 0.8);
    --moss-bright: #A0D090;
    --honeyed: #D4B880;
    --glitch-amber: #E0A040;
    --hud-bracket: #80A070;
    --text-light: #D0D8C0;
    --moss-mid: #80A070;
    --moss-vivid: #60B060;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: 'Nunito Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(14px, 1vw, 16px);
    line-height: 1.75;
    color: var(--text-light);
    background: var(--forest-deep);
}

/* ====================== */
/* BACKGROUND LAYER       */
/* ====================== */

#bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: linear-gradient(160deg, var(--forest-mid) 0%, var(--forest-deep) 100%);
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#hud-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0;
    background-image:
        linear-gradient(var(--hud-bracket) 1px, transparent 1px),
        linear-gradient(90deg, var(--hud-bracket) 1px, transparent 1px);
    background-size: 48px 48px;
    transition: opacity 800ms ease;
}

/* ====================== */
/* HUD BRACKETS           */
/* ====================== */

.hud-brackets {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

.bracket {
    position: absolute;
    width: 12px;
    height: 12px;
    border-color: var(--hud-bracket);
    border-style: solid;
    border-width: 0;
}

.bracket.tl {
    top: 0;
    left: 0;
    border-top-width: 1px;
    border-left-width: 1px;
}

.bracket.tr {
    top: 0;
    right: 0;
    border-top-width: 1px;
    border-right-width: 1px;
}

.bracket.bl {
    bottom: 0;
    left: 0;
    border-bottom-width: 1px;
    border-left-width: 1px;
}

.bracket.br {
    bottom: 0;
    right: 0;
    border-bottom-width: 1px;
    border-right-width: 1px;
}

/* Active panel brackets brighten */
.hud-panel-active > .hud-brackets .bracket {
    border-color: var(--moss-bright);
}

/* ====================== */
/* HUD TOP BAR            */
/* ====================== */

#hud-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    z-index: 100;
    background: var(--hud-panel);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    padding: 0 16px;
    transform: translateY(-48px);
    transition: transform 400ms ease-out;
}

#hud-topbar.visible {
    transform: translateY(0);
}

.topbar-left {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-shrink: 0;
}

.logotype {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: clamp(24px, 3.5vw, 44px);
    color: var(--honeyed);
    letter-spacing: -0.5px;
    line-height: 1;
}

.logotype-sub {
    font-family: 'Nunito Sans', sans-serif;
    font-size: 12px;
    color: var(--moss-bright);
    opacity: 0.6;
}

.topbar-nav {
    display: flex;
    gap: 4px;
    margin-left: 32px;
    flex-shrink: 0;
}

.nav-tab {
    background: none;
    border: 1px solid transparent;
    color: var(--text-light);
    font-family: 'Nunito Sans', sans-serif;
    font-size: 13px;
    padding: 6px 14px;
    cursor: pointer;
    transition: all 200ms ease;
    border-radius: 2px;
}

.nav-tab:hover {
    color: var(--moss-bright);
    border-color: var(--hud-bracket);
}

.nav-tab.active {
    color: var(--moss-bright);
    border-color: var(--moss-bright);
    background: rgba(160, 208, 144, 0.08);
}

.topbar-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.fps-counter {
    font-family: 'Fira Code', monospace;
    font-size: 12px;
    color: var(--moss-bright);
    opacity: 0.7;
}

.hud-button {
    width: 28px;
    height: 28px;
    background: rgba(128, 160, 112, 0.15);
    border: 1px solid var(--hud-bracket);
    color: var(--text-light);
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 200ms ease;
    border-radius: 2px;
}

.hud-button:hover {
    background: rgba(160, 208, 144, 0.2);
    border-color: var(--moss-bright);
    color: var(--moss-bright);
}

/* ====================== */
/* HUD MAIN PANEL (RIGHT) */
/* ====================== */

#hud-main-panel {
    position: fixed;
    top: 64px;
    right: 16px;
    width: min(50%, 640px);
    bottom: 16px;
    z-index: 50;
    background: var(--hud-panel);
    backdrop-filter: blur(8px);
    border-radius: 2px;
    transform: translateX(120%);
    transition: transform 500ms ease-out;
    overflow: hidden;
}

#hud-main-panel.visible {
    transform: translateX(0);
}

.panel-scroll {
    height: 100%;
    overflow-y: auto;
    padding: 24px;
    scrollbar-width: thin;
    scrollbar-color: var(--hud-bracket) transparent;
}

.panel-scroll::-webkit-scrollbar {
    width: 4px;
}

.panel-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.panel-scroll::-webkit-scrollbar-thumb {
    background: var(--hud-bracket);
    border-radius: 2px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.panel-title {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: clamp(22px, 3vw, 36px);
    color: var(--honeyed);
    margin-bottom: 16px;
    line-height: 1.2;
}

.panel-subtitle {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: clamp(18px, 2.2vw, 26px);
    color: var(--honeyed);
    margin: 24px 0 12px;
    line-height: 1.2;
}

.panel-text {
    color: var(--text-light);
    margin-bottom: 12px;
}

/* ====================== */
/* CODE BLOCKS            */
/* ====================== */

.code-block {
    background: rgba(20, 30, 15, 0.9);
    border: 1px solid var(--hud-bracket);
    border-radius: 2px;
    margin: 16px 0;
    overflow: hidden;
    position: relative;
}

.code-block.glitching {
    animation: glitch 100ms steps(2) forwards;
}

@keyframes glitch {
    0% { transform: translate(0); filter: none; }
    25% { transform: translate(-4px, 0); filter: hue-rotate(30deg); }
    50% { transform: translate(3px, 0); filter: hue-rotate(-20deg) saturate(1.5); }
    75% { transform: translate(-2px, 0); filter: hue-rotate(10deg); }
    100% { transform: translate(0); filter: none; }
}

.code-header {
    display: flex;
    justify-content: space-between;
    padding: 6px 12px;
    background: rgba(30, 40, 25, 0.6);
    border-bottom: 1px solid rgba(128, 160, 112, 0.2);
}

.code-lang,
.code-file {
    font-family: 'Fira Code', monospace;
    font-size: 11px;
    color: var(--hud-bracket);
}

.code-content {
    padding: 16px;
    font-family: 'Fira Code', monospace;
    font-size: 13px;
    color: var(--moss-bright);
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre;
}

.code-content .kw { color: var(--honeyed); }
.code-content .str { color: var(--moss-bright); }
.code-content .num { color: var(--glitch-amber); }
.code-content .fn { color: var(--moss-bright); }
.code-content .param {
    color: var(--text-light);
    transition: color 200ms ease;
}
.code-content .param:hover {
    color: var(--honeyed);
}
.code-content .comment { color: var(--hud-bracket); opacity: 0.6; }

/* Typing cursor */
.typing-cursor {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    background: var(--moss-bright);
    vertical-align: text-bottom;
    animation: blink-cursor 600ms steps(1) infinite;
}

@keyframes blink-cursor {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ====================== */
/* PARAMETER SLIDERS      */
/* ====================== */

.param-group {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin: 16px 0;
}

.param-slider {
    display: flex;
    align-items: center;
    gap: 12px;
}

.param-label {
    font-family: 'Fira Code', monospace;
    font-size: 12px;
    color: var(--text-light);
    width: 140px;
    flex-shrink: 0;
}

.hud-slider {
    -webkit-appearance: none;
    appearance: none;
    flex: 1;
    height: 4px;
    background: rgba(128, 160, 112, 0.2);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.hud-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background: var(--moss-bright);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 150ms ease;
}

.hud-slider::-webkit-slider-thumb:hover {
    transform: scale(1.3);
}

.hud-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: var(--moss-bright);
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

.param-value {
    font-family: 'Fira Code', monospace;
    font-size: 12px;
    color: var(--moss-bright);
    width: 40px;
    text-align: right;
    flex-shrink: 0;
    transition: color 300ms ease, transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.param-value.bounce {
    color: var(--glitch-amber);
    transform: scale(1.1);
}

/* ====================== */
/* EXAMPLES TAB           */
/* ====================== */

.example-nav {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.example-btn {
    background: rgba(128, 160, 112, 0.1);
    border: 1px solid var(--hud-bracket);
    color: var(--text-light);
    font-family: 'Fira Code', monospace;
    font-size: 12px;
    padding: 4px 12px;
    cursor: pointer;
    transition: all 200ms ease;
    border-radius: 2px;
}

.example-btn:hover {
    background: rgba(160, 208, 144, 0.15);
    color: var(--moss-bright);
}

.example-btn.active {
    background: rgba(160, 208, 144, 0.2);
    border-color: var(--moss-bright);
    color: var(--moss-bright);
}

/* ====================== */
/* API TAB                */
/* ====================== */

.api-entry {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(128, 160, 112, 0.15);
}

.api-entry:last-child {
    border-bottom: none;
}

.api-method {
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    color: var(--moss-bright);
    margin-bottom: 6px;
}

.api-method .kw { color: var(--honeyed); }
.api-method .param { color: var(--glitch-amber); }

/* ====================== */
/* GALLERY TAB            */
/* ====================== */

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 12px;
}

.gallery-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.gallery-thumb {
    aspect-ratio: 3 / 2;
    border-radius: 2px;
    border: 1px solid var(--hud-bracket);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 200ms ease;
}

.gallery-thumb:hover {
    border-color: var(--moss-bright);
}

.gallery-svg {
    width: 80%;
    height: 80%;
}

.gallery-label {
    font-family: 'Fira Code', monospace;
    font-size: 11px;
    color: var(--hud-bracket);
    text-align: center;
}

/* ====================== */
/* HUD STATS PANEL        */
/* ====================== */

#hud-stats-panel {
    position: fixed;
    bottom: 16px;
    left: 16px;
    width: min(30%, 360px);
    z-index: 50;
    background: var(--hud-panel);
    backdrop-filter: blur(8px);
    border-radius: 2px;
    padding: 16px;
    transform: translateY(120%);
    transition: transform 400ms ease-out;
}

#hud-stats-panel.visible {
    transform: translateY(0);
}

.stats-title {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: 20px;
    color: var(--honeyed);
    margin-bottom: 12px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-label {
    font-family: 'Fira Code', monospace;
    font-size: 10px;
    color: var(--hud-bracket);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-family: 'Fira Code', monospace;
    font-size: 15px;
    color: var(--moss-bright);
    transition: color 300ms ease, transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
    display: inline-block;
    transform-origin: left center;
}

.stat-value.bounce {
    color: var(--glitch-amber);
    transform: scale(1.1);
}

/* ====================== */
/* HUD MINI-MAP           */
/* ====================== */

#hud-minimap {
    position: fixed;
    bottom: 16px;
    right: 16px;
    width: min(20%, 240px);
    z-index: 40;
    background: var(--hud-panel);
    backdrop-filter: blur(8px);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 300ms ease;
}

#hud-minimap.visible {
    opacity: 1;
}

.minimap-viewport {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

#minimap-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.minimap-label {
    position: absolute;
    bottom: 4px;
    left: 8px;
    font-family: 'Fira Code', monospace;
    font-size: 9px;
    color: var(--hud-bracket);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ====================== */
/* INFO PANEL             */
/* ====================== */

#info-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    width: min(400px, 90vw);
    z-index: 200;
    background: rgba(30, 40, 25, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid var(--hud-bracket);
    border-radius: 2px;
    padding: 24px;
    opacity: 0;
    pointer-events: none;
    transition: all 300ms ease;
}

#info-panel.visible {
    opacity: 1;
    pointer-events: all;
    transform: translate(-50%, -50%) scale(1);
}

#info-panel.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -50%) scale(0.9);
}

.info-title {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: 28px;
    color: var(--honeyed);
    margin-bottom: 12px;
}

.info-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 16px 0 12px;
}

.info-link {
    font-family: 'Fira Code', monospace;
    font-size: 12px;
    color: var(--moss-bright);
    text-decoration: none;
    padding: 4px 10px;
    border: 1px solid var(--hud-bracket);
    border-radius: 2px;
    transition: all 200ms ease;
}

.info-link:hover {
    border-color: var(--moss-bright);
    background: rgba(160, 208, 144, 0.1);
}

.info-credit {
    font-family: 'Fira Code', monospace;
    font-size: 11px;
    color: var(--hud-bracket);
    margin-top: 8px;
}

/* ====================== */
/* RESPONSIVE             */
/* ====================== */

@media (max-width: 900px) {
    #hud-main-panel {
        top: 64px;
        right: 8px;
        left: 8px;
        width: auto;
        bottom: 200px;
    }

    #hud-stats-panel {
        bottom: 8px;
        left: 8px;
        width: calc(55% - 12px);
    }

    #hud-minimap {
        bottom: 8px;
        right: 8px;
        width: calc(45% - 12px);
    }
}

@media (max-width: 600px) {
    .topbar-nav {
        display: none;
    }

    #hud-main-panel {
        bottom: 160px;
    }

    #hud-stats-panel {
        width: calc(100% - 16px);
        bottom: 8px;
    }

    #hud-minimap {
        display: none;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .param-slider {
        flex-wrap: wrap;
    }

    .param-label {
        width: 100%;
    }
}

/* Mobile nav dropdown for small screens */
@media (max-width: 600px) {
    .topbar-nav {
        display: flex;
        position: absolute;
        top: 48px;
        left: 0;
        right: 0;
        background: var(--hud-panel);
        padding: 8px;
        flex-wrap: wrap;
        gap: 4px;
        opacity: 0;
        pointer-events: none;
        transition: opacity 200ms ease;
    }

    .topbar-nav.mobile-open {
        opacity: 1;
        pointer-events: all;
    }
}