/* -----------------------------------------------------------------------------
   The player shell.

   Two rules do most of the mobile work: `overscroll-behavior: none` with a fixed
   body stops iOS rubber-banding the page while a thumb is on a joystick, and
   `touch-action: none` on the canvases stops it scrolling and zooming instead of
   sending the drag to the game.
   -------------------------------------------------------------------------- */

:root {
    --sb-bg: #12141a;
    --sb-fg: #e8eaf0;
    --sb-dim: #8b90a0;
    --sb-accent: #5b8dd9;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    overscroll-behavior: none;
    background: var(--sb-bg);
    color: var(--sb-fg);
    font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
    -webkit-tap-highlight-color: transparent;
    -webkit-text-size-adjust: 100%;
}

body { position: fixed; inset: 0; }

#game {
    position: absolute;
    inset: 0;
    overflow: hidden;
    background: var(--sb-bg);
}

#game canvas { display: block; touch-action: none; }

/* ---- Loading overlay ---------------------------------------------------- */

.sb-loading {
    position: absolute;
    inset: 0;
    z-index: 100;
    display: grid;
    place-items: center;
    background: var(--sb-bg);
    transition: opacity 350ms ease;
}

.sb-loading.is-done { opacity: 0; pointer-events: none; }

.sb-loading-inner { text-align: center; max-width: min(90vw, 540px); }

.sb-loading-mark {
    font-size: 26px;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
}

.sb-loading-status { color: var(--sb-dim); margin-bottom: 20px; }

.sb-loading-bar {
    height: 3px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.09);
    overflow: hidden;
}

/* An indeterminate sweep: the engine reports progress in stages, not fractions. */
.sb-loading-bar i {
    display: block;
    width: 38%;
    height: 100%;
    border-radius: 2px;
    background: var(--sb-accent);
    animation: sb-sweep 1.15s ease-in-out infinite;
}

@keyframes sb-sweep {
    0%   { transform: translateX(-100%); }
    100% { transform: translateX(365%); }
}

.sb-loading-error {
    margin: 14px 0 0;
    padding: 12px 14px;
    text-align: left;
    white-space: pre-wrap;
    word-break: break-word;
    font: 12px/1.55 ui-monospace, SFMono-Regular, Menlo, monospace;
    color: #ffb4a8;
    background: rgba(255, 90, 70, 0.09);
    border: 1px solid rgba(255, 90, 70, 0.28);
    border-radius: 6px;
}

/* ---- Stats -------------------------------------------------------------- */

.sb-stats {
    position: absolute;
    top: calc(10px + env(safe-area-inset-top, 0px));
    left: calc(12px + env(safe-area-inset-left, 0px));
    z-index: 20;
    padding: 5px 9px;
    border-radius: 5px;
    background: rgba(0, 0, 0, 0.45);
    color: #b9c4d6;
    font: 11px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
    pointer-events: none;
    white-space: nowrap;
}

/* ---- Fullscreen button -------------------------------------------------- */

#fullscreen {
    position: fixed;
    top: calc(10px + env(safe-area-inset-top, 0px));
    right: calc(12px + env(safe-area-inset-right, 0px));
    z-index: 30;
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.35);
    color: var(--sb-fg);
    font-size: 17px;
    cursor: pointer;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

#fullscreen:hover { background: rgba(255, 255, 255, 0.12); }

/* ---- Orientation hint --------------------------------------------------- */

/* A banner, not a blocking overlay: the game is perfectly playable in portrait,
   and covering it to say so would be worse than saying nothing. Tapping it, or
   rotating, dismisses it. */
#rotate-hint {
    position: fixed;
    left: 50%;
    bottom: calc(18px + env(safe-area-inset-bottom, 0px));
    transform: translateX(-50%);
    z-index: 40;
    display: none;
    align-items: center;
    gap: 10px;
    padding: 9px 15px;
    max-width: calc(100vw - 32px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 22px;
    background: rgba(18, 20, 26, 0.82);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    cursor: pointer;
}

body.wants-landscape #rotate-hint { display: flex; }

#rotate-hint div {
    font-size: 20px;
    animation: sb-rotate 2.4s ease-in-out infinite;
}

#rotate-hint p { color: var(--sb-dim); margin: 0; font-size: 12.5px; white-space: nowrap; }

@keyframes sb-rotate {
    0%, 45%  { transform: rotate(0deg); }
    55%, 100%{ transform: rotate(90deg); }
}

@media (prefers-reduced-motion: reduce) {
    .sb-loading-bar i,
    #rotate-hint div { animation: none; }
}