/* Mykonos Island Voxels — UI styling.
   The aesthetic: cream/parchment background, soft pastel cards, cobalt-blue accents,
   warm Mediterranean light. All shapes are CSS only; in-game art is the generated pack. */

:root {
    --cream: #f4ede0;
    --cream-2: #ede4d2;
    --paper: #fbf6ec;
    --ink: #2b2a26;
    --ink-soft: #51504a;
    --muted: #8a8678;
    --line: #d9d0bd;
    --shadow: 0 8px 24px rgba(60, 50, 30, 0.10), 0 2px 6px rgba(60, 50, 30, 0.06);
    --shadow-lg: 0 18px 48px rgba(60, 50, 30, 0.16), 0 4px 12px rgba(60, 50, 30, 0.08);
    --cobalt: #1b5ba8;
    --cobalt-2: #2e6fbc;
    --cobalt-light: #d6e6f6;
    --terracotta: #c4622e;
    --leaf: #3d7355;
    --bougainvillea: #d85b8e;
    --sand: #e8d4a8;
    --water: #6ec8e0;
    --radius: 14px;
    --radius-sm: 10px;
    --radius-lg: 22px;
    --edge-gap: 16px;
    --left-rail-width: 72px;
    /* Title card height (roughly): 12px padding + 44px logo + 12px padding ≈ 68px.
       Toolbar anchors directly under this with a single edge-gap so the title
       and toolbar read as one connected left rail rather than two floating cards. */
    --title-card-height: 68px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    overflow: hidden;
    font-family: 'Inter', 'SF Pro Text', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    color: var(--ink);
    background: linear-gradient(180deg, #f6efe1 0%, #ebe1cc 100%);
    /* iOS Safari sometimes "rubber-band" scrolls the page even when
       overflow is hidden — this disables it so swipe gestures stay
       inside the canvas where they belong. */
    overscroll-behavior: none;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
    /* Use the dynamic viewport unit when available — on mobile Safari
       100vh includes the URL bar's hidden area, leaving the bottom of
       the canvas chopped off. 100dvh follows the actual visible area. */
    height: 100dvh;
}

#app.hidden { display: none; }

#game-canvas {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    display: block;
    background:
        radial-gradient(ellipse at 50% 30%, #fbf6ec 0%, #f0e7d2 60%, #e3d6ba 100%);
    cursor: crosshair;
    /* Stop the browser from interpreting touch gestures (scroll, pinch
       zoom, double-tap zoom, swipe-back nav). The InputManager handles
       all of them in JS now. */
    touch-action: none;
}

/* The touch-controls cheatsheet variant is a no-op on mouse devices —
   a media query below swaps it in on coarse-pointer devices. */
.ins-grid--touch { display: none; }

/* ── Loading screen ─────────────────────────────────────────────── */

#loading-screen {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    background: linear-gradient(180deg, #f6efe1, #e8dcc1);
    z-index: 999;
}
#loading-screen.hidden { display: none; }

.loading-card {
    background: var(--paper);
    border-radius: var(--radius-lg);
    padding: 36px 48px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    width: 360px;
}
.loading-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto 12px;
    background:
        radial-gradient(circle at 50% 40%, var(--cobalt) 0 18%, transparent 19%),
        linear-gradient(180deg, #fff 60%, #efe7d3 100%);
    border-radius: 16px;
    box-shadow: inset 0 -6px 0 rgba(0,0,0,0.04);
    position: relative;
}
.loading-logo::after {
    content: '';
    position: absolute;
    bottom: 8px; left: 50%; transform: translateX(-50%);
    width: 30px; height: 4px; background: var(--cobalt);
    border-radius: 2px;
}
.loading-title { font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }
.loading-sub   { color: var(--muted); margin-top: 4px; font-size: 13px; }

.loading-bar {
    margin-top: 20px;
    height: 6px;
    width: 100%;
    background: var(--cream-2);
    border-radius: 999px;
    overflow: hidden;
}
.loading-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--cobalt), var(--cobalt-2));
    transition: width 0.18s ease;
}
.loading-status {
    margin-top: 10px;
    font-size: 12px;
    color: var(--muted);
    font-style: italic;
}

/* ── Title card ────────────────────────────────────────────────── */

#title-card {
    position: fixed;
    top: 16px;
    left: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px 12px 12px;
    background: var(--paper);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    z-index: 10;
    user-select: none;
}
.title-logo {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background:
        linear-gradient(180deg, #fff, #f0e6cf);
    position: relative;
    box-shadow: inset 0 -4px 0 rgba(0,0,0,0.04);
}
.title-logo::before {
    content: '';
    position: absolute;
    width: 26px; height: 14px;
    border-radius: 13px 13px 0 0;
    background: var(--cobalt);
    left: 50%; top: 8px; transform: translateX(-50%);
}
.title-logo::after {
    content: '';
    position: absolute;
    width: 4px; height: 14px;
    background: var(--cobalt);
    border-radius: 2px;
    left: 50%; top: 22px; transform: translateX(-50%);
}
.title-text h1 {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--cobalt);
}
.title-text p {
    margin: 2px 0 0;
    font-size: 12px;
    color: var(--muted);
}

/* ── Toolbar ───────────────────────────────────────────────────── */

#toolbar {
    position: fixed;
    /* Anchored under the title card to form a single left rail.
       Vertically centering this used to leave it floating in the dead
       middle of the canvas, disconnected from the title above and the
       help below. Top-anchoring fixes the imbalance. */
    top: calc(var(--edge-gap) + var(--title-card-height) + 12px);
    left: var(--edge-gap);
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px 8px;
    background: var(--paper);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    z-index: 10;
}
.tool {
    width: 60px;
    padding: 10px 6px 8px;
    border: 0;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--ink-soft);
    transition: background 0.15s ease, color 0.15s ease, transform 0.05s ease;
    font: inherit;
}
.tool:hover { background: var(--cream-2); }
.tool:active { transform: scale(0.97); }
.tool.active {
    background: var(--cobalt-light);
    color: var(--cobalt);
}
.tool .ti {
    /* Icons are drawn on a 44×44 logical canvas. We display them at 36px
       (was 22px) so the glyph reads at a glance, sized to roughly fill
       the toolbar button without crowding the label below. */
    width: 36px;
    height: 36px;
    display: block;
}
.tool span.label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.01em;
}

/* ── Palette ──────────────────────────────────────────────────── */

#palette {
    position: fixed;
    right: 12px;
    top: 12px;
    bottom: 92px;
    width: 168px;
    background: var(--paper);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    z-index: 10;
    padding: 6px 6px 6px;
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

#palette-tabs {
    display: flex;
    gap: 2px;
    padding: 0 2px 4px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 6px;
    overflow-x: auto;
    scrollbar-width: none;
    flex-shrink: 0;
}
#palette-tabs::-webkit-scrollbar { display: none; }
.tab {
    border: 0;
    background: transparent;
    padding: 4px 6px;
    border-radius: 6px 6px 0 0;
    font: inherit;
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--muted);
    cursor: pointer;
    text-transform: uppercase;
    white-space: nowrap;
    flex-shrink: 0;
}
.tab:hover { color: var(--ink-soft); background: var(--cream-2); }
.tab.active {
    color: var(--cobalt);
    border-bottom: 2px solid var(--cobalt);
    margin-bottom: -1px;
}

#palette-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 2px 2px 4px;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    flex: 1 1 auto;
    align-content: start;
}
#palette-grid::-webkit-scrollbar { width: 4px; }
#palette-grid::-webkit-scrollbar-thumb { background: var(--line); border-radius: 2px; }

.swatch {
    background: var(--cream);
    border-radius: 8px;
    padding: 4px 3px 3px;
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
    user-select: none;
    transition: transform 0.05s ease, border-color 0.15s ease, background 0.15s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}
.swatch:hover { background: #f6ecd5; transform: translateY(-1px); }
.swatch.selected {
    border-color: var(--cobalt);
    background: var(--cobalt-light);
}
.swatch canvas, .swatch img {
    width: 38px;
    height: 38px;
    image-rendering: pixelated;
    object-fit: contain;
    pointer-events: none;
}
.swatch .name {
    font-size: 9px;
    font-weight: 600;
    color: var(--ink-soft);
    line-height: 1.1;
    height: 20px;
    display: flex;
    align-items: center;
    text-align: center;
    overflow: hidden;
}

/* ── HUD (right side) ─────────────────────────────────────────── */

#hud {
    position: fixed;
    right: 12px;
    bottom: 12px;
    width: 168px;
    display: flex;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px 8px;
    background: var(--paper);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    padding: 6px 8px;
    z-index: 10;
    font-size: 11px;
}
.hud-row { display: flex; align-items: center; gap: 5px; }
.hud-clock {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 700;
    font-size: 11px;
    color: var(--ink);
}
.sun-icon {
    width: 12px; height: 12px;
    border-radius: 50%;
    background:
        radial-gradient(circle at 50% 50%, #ffc24a 0 35%, #f0a623 36% 60%, transparent 61%);
    box-shadow: 0 0 5px rgba(240, 166, 35, 0.5);
    position: relative;
}

.hud-toggles {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px 8px;
    width: 100%;
    margin-top: 4px;
    padding-top: 5px;
    border-top: 1px solid var(--line);
}
.toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    color: var(--ink-soft);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}
.toggle input { display: none; }
.toggle .switch {
    width: 22px;
    height: 12px;
    background: #d8d2c4;
    border-radius: 999px;
    position: relative;
    transition: background 0.15s ease;
    flex-shrink: 0;
}
.toggle .switch::after {
    content: '';
    position: absolute;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #fff;
    top: 2px; left: 2px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2);
    transition: transform 0.15s ease;
}
.toggle input:checked + .switch { background: #6ec07a; }
.toggle input:checked + .switch::after { transform: translateX(10px); }

.hud-layers {
    display: none;
}

/* ── Instructions panel ────────────────────────────────────────── */

/* The controls help is a collapsible disclosure (native <details>):
   - Closed: a small "?" badge in the bottom-left, easy to ignore.
   - Open: the full keyboard cheatsheet expands above the badge.
   Defaulting to closed reclaims a big chunk of bottom-left canvas
   space and removes the visual competition with the right-side palette. */
#instructions {
    position: fixed;
    left: var(--edge-gap);
    bottom: var(--edge-gap);
    z-index: 30;
    background: rgba(251, 246, 236, 0.94);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    color: var(--ink-soft);
    font-size: 11px;
    overflow: hidden;
    max-width: 280px;
    transition: box-shadow 0.18s ease;
}
#instructions[open] {
    box-shadow: var(--shadow-lg);
}

.ins-summary {
    list-style: none;
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px 8px 8px;
    color: var(--cobalt);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 0.02em;
    transition: background 0.15s ease;
}
.ins-summary:hover { background: rgba(214, 230, 246, 0.45); }
.ins-summary::-webkit-details-marker { display: none; }
.ins-summary::marker { display: none; content: ''; }

.ins-badge {
    width: 22px;
    height: 22px;
    border-radius: 7px;
    background: var(--cobalt);
    color: var(--paper);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 13px;
    line-height: 1;
    flex-shrink: 0;
    box-shadow: inset 0 -2px 0 rgba(0,0,0,0.10);
}
.ins-summary-label { color: var(--cobalt); }
.ins-summary-hint {
    margin-left: 4px;
    font-size: 10px;
    font-weight: 500;
    color: var(--muted);
    letter-spacing: 0;
    text-transform: none;
}
#instructions[open] .ins-summary-hint { display: none; }
#instructions[open] .ins-summary {
    border-bottom: 1px solid var(--line);
}

.ins-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 4px 10px;
    align-items: center;
    line-height: 1.2;
    padding: 9px 12px 11px;
}
.key {
    min-width: 60px;
    padding: 2px 6px;
    border: 1px solid rgba(27, 91, 168, 0.18);
    border-radius: 5px;
    background: rgba(214, 230, 246, 0.65);
    color: var(--cobalt);
    font-weight: 800;
    font-size: 9.5px;
    text-align: center;
    white-space: nowrap;
}

/* ── Toast ────────────────────────────────────────────────────── */

#toast {
    position: fixed;
    left: 50%;
    top: 16px;
    transform: translate(-50%, -20px);
    padding: 8px 16px;
    background: var(--ink);
    color: var(--paper);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 100;
}
#toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* ── Responsive: tablet (≤900px) ──────────────────────────────── */

@media (max-width: 900px) {
    #palette {
        width: calc(100vw - 32px);
        right: 16px;
        top: auto;
        bottom: calc(16px + env(safe-area-inset-bottom));
        height: 180px;
    }
    #palette-grid {
        grid-template-columns: repeat(auto-fill, minmax(58px, 1fr));
    }
    /* HUD is duplicate info on small screens — palette dominates the
       bottom edge already. The compact controls badge stays so the
       cheatsheet is still discoverable on touch / portrait layouts;
       it lifts up to clear the bottom palette. */
    #hud { display: none; }
    #instructions {
        bottom: calc(180px + 24px + env(safe-area-inset-bottom));
    }
    /* Open state on narrow screens: cap the height so the cheatsheet
       can scroll instead of pushing offscreen. */
    #instructions[open] .ins-grid {
        max-height: 50vh;
        overflow-y: auto;
    }
}

/* ── Responsive: phone portrait (≤640px) ──────────────────────── */

/* Below 640px we're almost certainly on a phone in portrait. The
   redesign here optimises for the realities of one-thumb operation
   on a small screen:
     • The title card collapses to logo + short name to reclaim space.
     • The toolbar shrinks to icon-only and tucks against the safe-area
       inset on the left.
     • The palette becomes a full-width bottom sheet with bigger swatches.
     • The controls badge uses a 44px touch target and floats above the
       palette out of thumb-reach so it isn't tapped accidentally. */

@media (max-width: 640px) {
    :root {
        --edge-gap: 10px;
        --title-card-height: 52px;
    }

    /* Compact title card: logo + just the headline, subtitle hidden
       (it's prose, not a tool). Anchor with safe-area inset so the
       iPhone notch doesn't sit on top of the title text. */
    #title-card {
        top: calc(10px + env(safe-area-inset-top));
        left: calc(10px + env(safe-area-inset-left));
        padding: 8px 12px 8px 8px;
        gap: 8px;
        border-radius: var(--radius-sm);
    }
    .title-logo {
        width: 36px;
        height: 36px;
        border-radius: 8px;
    }
    .title-logo::before { width: 22px; height: 12px; top: 6px; }
    .title-logo::after  { width: 3px; height: 12px; top: 18px; }
    .title-text h1 { font-size: 15px; line-height: 1.1; }
    .title-text p  { display: none; }

    /* Toolbar: drop the labels (icons are already self-evident at this
       size) and tighten everything so it doesn't crowd the canvas.
       Each tool is still ≥44×44 touch target — Apple/Material guideline
       minimum — and the icon now visually fills the button instead of
       hiding in the middle of it. */
    #toolbar {
        top: calc(10px + env(safe-area-inset-top) + var(--title-card-height) + 8px);
        left: calc(8px + env(safe-area-inset-left));
        padding: 6px 5px;
        gap: 4px;
        border-radius: var(--radius-sm);
    }
    .tool {
        width: 50px;
        padding: 7px 4px;
        gap: 2px;
    }
    .tool .ti { width: 32px; height: 32px; }
    .tool span.label { display: none; }

    /* Palette: full-width bottom sheet, taller, larger swatches sized
       for fingertips. Sits above the iOS home indicator. */
    #palette {
        left: calc(8px + env(safe-area-inset-left));
        right: calc(8px + env(safe-area-inset-right));
        width: auto;
        bottom: calc(8px + env(safe-area-inset-bottom));
        height: 200px;
        padding: 4px 6px 6px;
    }
    #palette-tabs {
        gap: 4px;
        padding: 2px 2px 4px;
    }
    .tab {
        font-size: 11px;
        padding: 6px 10px;
        min-height: 32px;
    }
    #palette-grid {
        grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
        gap: 6px;
    }
    .swatch { padding: 6px 4px 4px; min-height: 78px; }
    .swatch canvas, .swatch img { width: 44px; height: 44px; }
    .swatch .name { font-size: 10px; height: 22px; }

    /* Controls badge: bigger target, lifted above the palette sheet,
       and with the open panel scrollable so a long cheatsheet doesn't
       spill off the top of the screen. */
    #instructions {
        left: calc(8px + env(safe-area-inset-left));
        bottom: calc(200px + 16px + env(safe-area-inset-bottom));
        max-width: calc(100vw - 16px - env(safe-area-inset-left) - env(safe-area-inset-right));
    }
    .ins-summary {
        padding: 10px 14px 10px 10px;
        min-height: 44px;
    }
    .ins-badge { width: 26px; height: 26px; font-size: 14px; }
    .ins-summary-hint { display: none; }
    #instructions[open] .ins-grid {
        max-height: 40vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Toast clears the safe-area + title-card on phones. */
    #toast {
        top: calc(env(safe-area-inset-top) + 8px);
        font-size: 12px;
        padding: 7px 14px;
    }
}

/* ── Responsive: very small phones (≤380px) ───────────────────── */

/* On a 360-class device the bottom palette + toolbar would otherwise
   eat the canvas. Tighten further: 5-tool grid that wraps, smaller
   palette swatches. */
@media (max-width: 380px) {
    .tool { width: 46px; padding: 6px 3px; }
    .tool .ti { width: 28px; height: 28px; }
    #palette { height: 184px; }
    #palette-grid { grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); }
    .swatch canvas, .swatch img { width: 38px; height: 38px; }
    #instructions { bottom: calc(184px + 14px + env(safe-area-inset-bottom)); }
}

/* ── Responsive: phone landscape ──────────────────────────────── */

/* Landscape on a phone (short height, wide layout): bring the palette
   back to the right side as a slim column instead of eating the bottom
   third of the screen, and shrink the title back even further. */
@media (max-height: 480px) and (orientation: landscape) {
    #title-card {
        padding: 6px 10px 6px 6px;
    }
    .title-logo { width: 32px; height: 32px; }
    .title-text h1 { font-size: 14px; }
    .title-text p  { display: none; }

    #toolbar {
        top: calc(8px + env(safe-area-inset-top));
        left: calc(8px + env(safe-area-inset-left));
        padding: 5px 4px;
        gap: 3px;
    }
    .tool { width: 44px; padding: 6px 3px; }
    .tool .ti { width: 26px; height: 26px; }
    .tool span.label { display: none; }

    #palette {
        top: calc(8px + env(safe-area-inset-top));
        right: calc(8px + env(safe-area-inset-right));
        bottom: calc(8px + env(safe-area-inset-bottom));
        left: auto;
        width: 200px;
        height: auto;
    }
    #palette-grid { grid-template-columns: repeat(2, 1fr); }
    #instructions {
        bottom: calc(8px + env(safe-area-inset-bottom));
        left: calc(8px + env(safe-area-inset-left));
    }
}

/* ── Coarse-pointer (touch device) cheatsheet swap ────────────── */

/* On any pointer-coarse device (phones, tablets, touch laptops in
   tablet mode) the keyboard shortcuts are useless — swap to the
   touch-gesture cheatsheet. Pure CSS, no JS detection needed. */
@media (pointer: coarse) {
    .ins-grid--mouse { display: none; }
    .ins-grid--touch { display: grid; }
    /* Touch devices often have a crosshair-incompatible cursor. */
    #game-canvas { cursor: default; }
}