/* ============================================================
   Cloud Jumper — styles.css
   Fullscreen canvas game. HUD and overlays are DOM-layered
   above the <canvas>, so they can use GSAP / CSS tweens freely.
   ============================================================ */

:root {
    --sky-top: #6fbde3;
    --sky-bottom: #bfe3f3;
    --ink: #2b2140;
    --ink-soft: #58507a;
    --cream: #fff9ea;
    --cream-deep: #f4e7c2;
    --accent: #ffc857;
    --shadow: 0 12px 30px rgba(43, 33, 64, 0.25);
    --font-stack: "Nunito", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    overflow: hidden;
    font-family: var(--font-stack);
    color: var(--ink);
    background: var(--sky-bottom);
    -webkit-font-smoothing: antialiased;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
    overscroll-behavior: none;
}

#app {
    position: fixed;
    inset: 0;
    overflow: hidden;
}

canvas#game {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    cursor: default;
}

/* ---------- HUD ---------- */

.hud {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 20px 28px;
    display: flex;
    justify-content: flex-end;
    align-items: flex-start;
    pointer-events: none;
    z-index: 2;
    text-shadow: 0 2px 0 rgba(255, 255, 255, 0.45);
}

/* Top-right HUD stack: Score → Best → Coins, each on its own line,
   right-aligned. No background card — Score and Best have enough contrast
   against the sky via ink text + the `.hud` text-shadow. Coins needs a
   darker outline because gold-on-sky is weak. */
.hud-stack {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    text-align: right;
    pointer-events: none;
}

.hud-coins {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    font-size: 24px;
    font-weight: 900;
    color: var(--accent);
    letter-spacing: 0.04em;
    line-height: 1;
    /* Tight black halo for gold-on-sky readability. Multiple offsets form a
       faux-outline; the wider soft shadow gives depth against light clouds. */
    text-shadow:
        -1px -1px 0 rgba(0, 0, 0, 0.85),
         1px -1px 0 rgba(0, 0, 0, 0.85),
        -1px  1px 0 rgba(0, 0, 0, 0.85),
         1px  1px 0 rgba(0, 0, 0, 0.85),
         0   2px 0 rgba(0, 0, 0, 0.45),
         0   0   8px rgba(0, 0, 0, 0.35);
}

.coin-icon {
    display: inline-block;
    vertical-align: -0.18em;   /* nudge down so it sits on the baseline */
    image-rendering: -webkit-optimize-contrast;   /* sharper at small sizes */
}

.coin-icon--hud {
    width: 26px;
    height: 26px;
    margin-right: 6px;
    filter: drop-shadow(0 1px 0 rgba(0, 0, 0, 0.25));
}

.coin-icon--inline {
    width: 18px;
    height: 18px;
    margin-right: 4px;
}

.hud-score,
.hud-highscore {
    line-height: 1;
}

.hud-score__label,
.hud-highscore__label {
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    opacity: 0.75;
    margin-bottom: 6px;
}

.hud-score__value {
    font-size: 56px;
    font-weight: 900;
    color: var(--ink);
    letter-spacing: 0.02em;
}

.hud-highscore {
    opacity: 0.7;
}

.hud-highscore__value {
    font-size: 28px;
    font-weight: 800;
    color: var(--ink-soft);
}

/* ---------- Overlays ---------- */

.overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    background: rgba(40, 60, 90, 0.25);
    backdrop-filter: blur(8px) saturate(110%);
    -webkit-backdrop-filter: blur(8px) saturate(110%);
    transition: opacity 0.25s ease;
    padding: 16px;
}

.overlay.is-hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay__card {
    background: var(--cream);
    border: 4px solid var(--ink);
    border-radius: 28px;
    padding: 36px 44px;
    min-width: 320px;
    max-width: 90vw;
    text-align: center;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}

.overlay__title {
    font-size: 44px;
    font-weight: 900;
    letter-spacing: 0.02em;
    color: var(--ink);
    margin: 0;
}

.overlay__subtitle {
    font-size: 16px;
    line-height: 1.5;
    color: var(--ink-soft);
    max-width: 380px;
}

.overlay__spinner {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 5px solid rgba(43, 33, 64, 0.2);
    border-top-color: var(--ink);
    animation: spin 0.9s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.overlay__score-line {
    display: flex;
    align-items: baseline;
    gap: 14px;
    font-size: 18px;
    font-weight: 800;
}

.overlay__score-line--muted {
    opacity: 0.7;
    font-size: 16px;
}

.overlay__score-label {
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.7;
}

.overlay__score-value {
    font-size: 44px;
    font-weight: 900;
    color: var(--ink);
}

.overlay__score-line--muted .overlay__score-value {
    font-size: 26px;
    color: var(--ink-soft);
}

.overlay__newhigh {
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #d97a1a;
    background: var(--accent);
    padding: 6px 14px;
    border-radius: 999px;
    border: 2px solid var(--ink);
}

.overlay__newhigh.is-hidden {
    display: none;
}

/* ---------- Keycap & hotkey pill (bottom-right shortcut indicator) ---------- */

.kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 7px;
    font-family: "Nunito", "Segoe UI", system-ui, sans-serif;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.02em;
    color: var(--ink);
    background: linear-gradient(180deg, #ffffff 0%, #e8dfc3 100%);
    border: 2px solid var(--ink);
    border-radius: 6px;
    box-shadow: 0 2px 0 var(--ink), inset 0 -2px 0 rgba(43, 33, 64, 0.08);
    line-height: 1;
    user-select: none;
}

.hotkeys {
    position: absolute;
    bottom: 18px;
    right: 20px;
    z-index: 20;  /* above overlays so it works on every screen */
    display: flex;
    gap: 10px;
    pointer-events: none;
}

.hotkeys.is-hidden {
    display: none;
}

/* Shared "ink-outlined cream pill" used for hotkeys, HUD blocks, and any
   other on-canvas chrome that needs to stay readable against the sky. Any
   interactivity (cursor, hover, pressed states) is layered on top via
   modifier classes like `.hotkey-btn`. */
.pill {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 249, 234, 0.92);
    border: 2px solid var(--ink);
    border-radius: 999px;
    padding: 9px 15px 9px 13px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--ink);
    box-shadow: 0 3px 0 var(--ink);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.hotkey-btn {
    pointer-events: auto;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.1s ease, background 0.15s;
}

.hotkey-btn:hover {
    background: #ffffff;
}

.hotkey-btn:active {
    transform: translateY(2px);
    box-shadow: 0 1px 0 var(--ink);
}

.hotkey-btn:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
}

.hotkey-btn[aria-pressed="true"] {
    background: rgba(230, 220, 200, 0.92);
    color: var(--ink-soft);
}

.hotkey-btn[aria-pressed="true"] .kbd {
    background: linear-gradient(180deg, #ded4b8 0%, #b7ad93 100%);
    color: var(--ink-soft);
}

.hotkey-btn.is-active {
    background: #ffd37a;
    box-shadow: 0 3px 0 var(--ink), 0 0 0 3px rgba(255, 200, 87, 0.55);
}

/* ---------- Bird (DOM overlay so the GIF animates) ---------- */

.bird-overlay {
    position: absolute;
    pointer-events: none;
    z-index: 1;
    transform-origin: 50% 50%;
    /* DO NOT set will-change: transform here. Chromium promotes the element
       to its own compositor layer, which snapshots the GIF as a static
       texture and freezes animation at frame 1. */
}
/* Park the <img> far off-screen instead of display:none or visibility:hidden.
   Both of those can cause Chromium to pause the GIF decoder; parking keeps
   the element actively painting so animation state stays alive. We still
   force a fresh src on every spawn for belt-and-suspenders. */
.bird-overlay.is-hidden {
    left: -99999px;
    top: -99999px;
}

/* ---------- Jetpack fuel gauge (vertical, right edge) ---------- */

.fuel-gauge {
    position: absolute;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    width: 46px;
    height: 240px;
    background: rgba(30, 30, 50, 0.35);
    border: 3px solid var(--ink);
    border-radius: 18px;
    overflow: hidden;
    z-index: 3;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: var(--shadow);
}

.fuel-gauge.is-hidden { display: none; }

.fuel-gauge__fill {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 100%;
    background: #2ecc71;
    transition: height 0.08s linear, background 0.2s linear;
}

.fuel-gauge__label {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    color: #ffffff;
    font-weight: 900;
    font-size: 14px;
    letter-spacing: 0.04em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.75);
    pointer-events: none;
    z-index: 1;
    white-space: nowrap;
}

@media (max-width: 520px) {
    .fuel-gauge { width: 36px; height: 190px; right: 12px; }
    .fuel-gauge__label { font-size: 12px; }
}

@media (max-width: 520px) {
    .hotkeys { bottom: 10px; right: 10px; }
    .hotkey-btn { font-size: 12px; padding: 4px 12px 4px 4px; }
    .kbd { min-width: 22px; height: 22px; font-size: 11px; }
}

/* ---------- Button ---------- */

.btn {
    font-family: inherit;
    font-size: 20px;
    font-weight: 900;
    letter-spacing: 0.04em;
    color: var(--ink);
    background: #fff;
    border: 4px solid var(--ink);
    border-radius: 999px;
    padding: 14px 36px;
    cursor: pointer;
    box-shadow: 0 6px 0 var(--ink);
    transform: translateY(0);
    transition: transform 0.1s ease, box-shadow 0.1s ease, background 0.15s;
    margin-top: 6px;
}

.btn:hover {
    background: var(--accent);
}

.btn:active {
    transform: translateY(4px);
    box-shadow: 0 2px 0 var(--ink);
}

.btn:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 4px;
}

.btn--ghost {
    background: transparent;
    border-width: 3px;
    box-shadow: 0 4px 0 var(--ink);
    font-size: 16px;
    padding: 10px 28px;
}

.btn--ghost:hover {
    background: var(--cream-deep);
}

/* ---------- Settings overlay ---------- */

.overlay__card--settings {
    gap: 14px;
    min-width: 340px;
    max-width: 92vw;
}

.settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    width: 100%;
    padding: 4px 2px;
}

.settings-label {
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--ink);
}

.settings-slider {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.settings-slider input[type="range"] {
    width: 140px;
    accent-color: var(--accent);
    cursor: pointer;
    transition: opacity 0.15s ease;
}

.settings-slider input[type="range"]:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    accent-color: var(--ink-soft);
}

.settings-slider input[type="range"]:disabled + .settings-slider__value,
.settings-slider__value.is-disabled {
    opacity: 0.5;
}

.settings-slider__value {
    min-width: 46px;
    text-align: right;
    font-variant-numeric: tabular-nums;
    font-size: 14px;
    font-weight: 800;
    color: var(--ink-soft);
}

/* Speaker-icon mute toggle. Two stacked SVG icons; visibility swaps on
   aria-pressed so muting doesn't touch the volume slider value. */
.mute-btn {
    appearance: none;
    border: none;
    background: transparent;
    padding: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--ink);
    cursor: pointer;
    border-radius: 6px;
    transition: color 0.15s ease, background 0.15s ease;
}
.mute-btn:hover { background: rgba(0, 0, 0, 0.06); }
.mute-btn__icon { display: none; }
.mute-btn[aria-pressed="false"] .mute-btn__icon--on  { display: inline-block; }
.mute-btn[aria-pressed="true"]  .mute-btn__icon--off { display: inline-block; color: var(--ink-soft); }

/* iOS-style toggle */
.toggle {
    position: relative;
    width: 52px;
    height: 30px;
    background: #c8c0aa;
    border: 2px solid var(--ink);
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.22s ease;
    padding: 0;
    flex-shrink: 0;
}

.toggle[aria-checked="true"] {
    background: #34c759;
}

.toggle__thumb {
    position: absolute;
    top: 1px;
    left: 1px;
    width: 24px;
    height: 24px;
    background: #fff;
    border: 2px solid var(--ink);
    border-radius: 50%;
    transition: transform 0.22s cubic-bezier(.3, 1.4, .6, 1);
    box-shadow: 0 2px 0 rgba(43, 33, 64, 0.15);
    box-sizing: border-box;
}

.toggle[aria-checked="true"] .toggle__thumb {
    transform: translateX(22px);
}

.toggle:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
}

/* Segmented control */
.segmented {
    display: inline-flex;
    background: var(--cream-deep);
    border: 2px solid var(--ink);
    border-radius: 999px;
    padding: 3px;
    gap: 2px;
}

.segmented__btn {
    padding: 6px 14px;
    background: transparent;
    border: none;
    border-radius: 999px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--ink);
    cursor: pointer;
    transition: background 0.18s, color 0.18s;
}

.segmented__btn:hover {
    background: rgba(43, 33, 64, 0.08);
}

.segmented__btn[aria-pressed="true"] {
    background: var(--ink);
    color: var(--cream);
}

.segmented__btn[aria-pressed="true"]:hover {
    background: var(--ink);
}

.segmented__btn:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

/* ---------- Responsive tweaks ---------- */

@media (max-width: 520px) {
    .hud {
        padding: 14px 18px;
    }
    .hud-score__value {
        font-size: 40px;
    }
    .hud-highscore__value {
        font-size: 22px;
    }
    .hud-coins {
        font-size: 18px;
    }
    .overlay__title {
        font-size: 34px;
    }
    .overlay__card {
        padding: 28px 28px;
        min-width: 280px;
    }
}

/* ============================================================
   Shop — grid of weapon cards (see game.js ShopUI).
   Each card's border / rarity chip / equipped-button fill all
   derive from a single `--rarity` custom property, so adding a
   new rarity is just a data-rarity selector below.
   ============================================================ */
.overlay__card--shop {
    min-width: 360px;
    max-width: 94vw;
    gap: 16px;
}
.shop-balance {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 18px;
}
/* Horizontal carousel — flex + overflow-x so touch / trackpad / mouse-drag
   all swipe sideways. Mouse drag is wired up in ShopUI. scroll-snap keeps
   cards tidy on release. Browser default scrollbar is hidden for polish. */
.shop-grid {
    display: flex;
    flex-direction: row;
    gap: 14px;
    width: 100%;
    max-width: 760px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 18px 4px 12px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--ink) transparent;
    cursor: grab;
    user-select: none;
}
.shop-grid.is-dragging { cursor: grabbing; scroll-snap-type: none; }
.shop-grid::-webkit-scrollbar { height: 6px; }
.shop-grid::-webkit-scrollbar-thumb { background: var(--ink); border-radius: 3px; }
.shop-grid::-webkit-scrollbar-track { background: transparent; }
.shop-card {
    --rarity: var(--ink);
    background: #fff;
    border: 4px solid var(--rarity);
    border-radius: 18px;
    padding: 12px 10px 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 0 var(--ink);
    position: relative;
    flex: 0 0 170px;
    scroll-snap-align: start;
}
/* Subtle status ribbon on the currently-equipped card. */
.shop-card[data-equipped="true"]::after {
    content: "Equipped";
    position: absolute;
    top: -20px;
    right: 10px;
    background: var(--accent);
    color: var(--ink);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 9px;
    border-radius: 999px;
    border: 2px solid var(--ink);
    box-shadow: 0 2px 0 var(--ink);
}
.shop-card[data-rarity="legendary"] { --rarity: rgb(255, 234, 0); }
.shop-card[data-rarity="rare"]      { --rarity: rgb(76, 95, 196); }
.shop-card__rarity {
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: var(--rarity);
    /* White text reads better on darker rarities (e.g. rare blue). The
       legendary yellow is bright enough that ink-on-yellow looks sharper —
       see per-rarity override below. */
    color: #fff;
    text-shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
    padding: 3px 10px;
    border-radius: 999px;
    border: 2px solid var(--ink);
}
.shop-card[data-rarity="legendary"] .shop-card__rarity {
    color: var(--ink);
    text-shadow: none;
}
.shop-card__img-wrap {
    height: 72px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.shop-card__img {
    max-height: 72px;
    max-width: 100%;
    object-fit: contain;
    image-rendering: pixelated;
    /* Browsers default to letting you drag an <img> as a file — that hijacks
       the carousel's click-drag scroll. Disable drag + selection on every
       engine so mouse drag is reserved for scrolling the shop row. */
    user-select: none;
    -webkit-user-select: none;
    -webkit-user-drag: none;
    -o-user-drag: none;
    -webkit-touch-callout: none;
    pointer-events: none;
}
.shop-card__img-empty {
    font-size: 34px;
    font-weight: 900;
    color: var(--ink);
    opacity: 0.35;
}
.shop-card__name { font-weight: 900; font-size: 15px; flex: 1; }
.shop-card__price {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 800;
    font-size: 14px;
}
/* Future per-weapon ammo row — renders only when we wire it up. */
.shop-card__ammo {
    display: flex;
    justify-content: space-between;
    width: 100%;
    font-size: 12px;
    font-weight: 700;
    color: var(--ink);
    border-top: 2px dashed var(--ink);
    padding-top: 6px;
}
.shop-card__action {
    font-size: 14px;
    padding: 8px 20px;
    margin-top: 4px;
    width: 100%;;
    box-shadow: 0 4px 0 var(--ink);
}
.shop-card__action[disabled] {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: 0 2px 0 var(--ink);
}
/* Unequip + already-equipped states share a generic accent colour
   independent of rarity — rarity-coloured fills clashed with the ink text
   (ink-on-blue was unreadable). */
.shop-card__action[data-action="unequip"],
.shop-card__action[data-action="equipped"] {
    background: var(--cream-deep);
    color: var(--ink);
}
.shop-card__action[data-action="unequip"]:hover {
    background: var(--accent);
}