/* Pasta Perfetta — /tools/pasta-sim
   Loaded only on the pasta-sim route (see header.php).
   Tokens come from ai-design-system.css. */

/* reclaim vertical space so the 3D stage is the hero, not the header */
.psim-page.tool-page {
    padding-top: var(--space-5);
}

.psim-page .tool-nav {
    margin-bottom: var(--space-4);
}

.psim-header {
    max-width: 64ch;
    margin-bottom: var(--space-5);
}

.psim-header h1 {
    font-size: var(--font-size-3xl);
}

.psim-kicker {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: var(--tracking-caps);
    margin-bottom: var(--space-3);
    padding: var(--space-1) var(--space-3);
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-sm);
}

/* ── layout: stage + rail ────────────────────────────────────────── */

.psim-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: var(--space-6);
    align-items: start;
}

/* ── stage (canvas viewport) ─────────────────────────────────────── */

/* the `hidden` attribute must win over the display rules below
   (loading / fallback / result / meters all set display explicitly) */
.psim-stage [hidden] {
    display: none !important;
}

.psim-stage {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    max-height: 600px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #eef1ef; /* matches scene background to avoid a flash */
    box-shadow: var(--shadow-sm);
}

.psim-stage canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none; /* gestures belong to the sim */
    cursor: grab;
}

.psim-stage canvas:active {
    cursor: grabbing;
}

/* loading + fallback */

.psim-loading {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    letter-spacing: var(--tracking-wide);
}

.psim-loading::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    width: 40%;
    background: var(--accent);
    border-radius: var(--radius-full);
    animation: psim-warm 1.4s ease-in-out infinite;
}

@keyframes psim-warm {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}

.psim-fallback {
    position: absolute;
    inset: 0;
    display: grid;
    place-content: center;
    gap: var(--space-3);
    text-align: center;
    padding: var(--space-6);
    background: var(--bg-secondary);
}

.psim-fallback p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    max-width: 36ch;
    margin: 0 auto;
}

/* ── HUD ─────────────────────────────────────────────────────────── */

.psim-hud-top {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    right: var(--space-3);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-3);
    pointer-events: none;
}

.psim-chip {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    max-width: 60%;
}

.psim-meters {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    align-items: flex-end;
}

.psim-meter {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-1) var(--space-2);
    box-shadow: var(--shadow-sm);
}

.psim-meter-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 7.5em;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.psim-meter-track {
    position: relative;
    width: 110px;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.psim-meter-fill {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-full);
    transform-origin: left center;
    transform: scaleX(0);
    transition: transform 180ms linear;
}

.psim-meter-fill--temp {
    background: var(--warning);
}

.psim-meter-fill--done {
    background: var(--accent);
}

/* the al dente window, 65–88% of the track */
.psim-meter-zone {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 65%;
    width: 23%;
    background: rgba(22, 163, 74, 0.28);
}

.psim-meter-zone-label {
    font-size: 0.7rem;
    color: var(--success);
    font-weight: 700;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
}

/* bottom action dock */

.psim-hud-bottom {
    position: absolute;
    bottom: var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--space-3);
    pointer-events: auto;
}

.psim-action {
    min-height: 48px;
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 700;
    white-space: nowrap;
}

.psim-secondary {
    min-height: 44px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
    font-weight: 600;
}

.psim-secondary:hover {
    border-color: var(--accent-border);
    background: var(--bg-hover);
}

.psim-viewchip {
    position: absolute;
    bottom: var(--space-3);
    right: var(--space-3);
    min-height: 36px;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.psim-viewchip:hover {
    color: var(--accent-text);
    border-color: var(--accent-border);
}

.psim-drag-hint {
    margin-top: var(--space-3);
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ── result card ─────────────────────────────────────────────────── */

.psim-result {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* `safe center`: centered when it fits, top-aligned + scrollable when it
       overflows a short stage — so the action row is never clipped */
    justify-content: safe center;
    gap: var(--space-2);
    text-align: center;
    background: rgba(245, 247, 246, 0.82);
    padding: var(--space-4) var(--space-4);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}

.psim-result > * {
    max-width: 460px;
    margin: 0;
}

.psim-result-kicker {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: var(--tracking-caps);
    color: var(--accent);
    font-weight: 700;
    background: var(--bg-secondary);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    border: 1px solid var(--accent-border);
}

.psim-result-verdict {
    font-size: var(--font-size-2xl);
    line-height: var(--lh-tight);
    background: var(--bg-secondary);
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-md);
}

.psim-result-stars {
    font-size: var(--font-size-xl);
    color: #d97706;
    letter-spacing: 0.15em;
    background: var(--bg-secondary);
    padding: 0 var(--space-4);
    border-radius: var(--radius-md);
}

.psim-result-tip,
.psim-result-stats {
    background: var(--bg-secondary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.psim-result-badges {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    justify-content: center;
    background: var(--bg-secondary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
}

.psim-result-badges li {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--accent-strong);
    background: var(--accent-dim);
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-full);
    padding: var(--space-1) var(--space-3);
}

.psim-result-actions {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    justify-content: center;
    margin-top: var(--space-2);
}

.psim-result-actions .btn {
    min-height: 44px;
}

.psim-quiet {
    background: transparent;
    border-color: transparent;
    color: var(--text-secondary);
    text-decoration: underline;
}

.psim-result.is-perfect .psim-result-verdict {
    color: var(--accent-strong);
}

/* ── rail ────────────────────────────────────────────────────────── */

.psim-rail {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    position: sticky;
    top: calc(var(--nav-height) + var(--space-4));
}

.psim-modes {
    display: flex;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-full);
    overflow: hidden;
    background: var(--bg-secondary);
}

.psim-modes button {
    flex: 1;
    min-height: 46px;
    border: none;
    background: transparent;
    font: inherit;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.psim-modes button[aria-pressed="true"] {
    background: var(--accent);
    color: var(--accent-contrast);
}

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

.psim-steps {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    margin: 0;
    padding: 0;
}

.psim-step {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.psim-step-num {
    flex: 0 0 26px;
    width: 26px;
    height: 26px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--text-secondary);
}

.psim-step.is-active {
    background: var(--bg-secondary);
    border-color: var(--accent-border);
    color: var(--text-primary);
    font-weight: 600;
}

.psim-step.is-active .psim-step-num {
    background: var(--accent);
    color: var(--accent-contrast);
}

.psim-step.is-done {
    color: var(--text-secondary);
}

.psim-step.is-done .psim-step-num {
    background: var(--success-dim);
    color: var(--success);
}

.psim-step.is-done .psim-step-num::before {
    content: "\2713";
}

.psim-step.is-done .psim-step-num {
    font-size: 0; /* hide the number, show the check */
}

.psim-step.is-done .psim-step-num::before {
    font-size: var(--font-size-xs);
}

.psim-note {
    background: var(--accent-dim);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-md);
    padding: var(--space-4);
}

.psim-note-label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: var(--tracking-caps);
    color: var(--accent-strong);
    margin-bottom: var(--space-2);
}

.psim-note p {
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: var(--lh-snug);
    color: var(--text-primary);
}

.psim-controls {
    display: flex;
    gap: var(--space-3);
}

.psim-controls .btn {
    flex: 1;
}

.psim-noscript {
    margin-top: var(--space-5);
    padding: var(--space-4);
    background: var(--warning-dim);
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

/* ── responsive ──────────────────────────────────────────────────── */

@media (max-width: 920px) {
    .psim-layout {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }

    .psim-stage {
        aspect-ratio: 4 / 3;
    }

    .psim-rail {
        position: static;
    }
}

@media (max-width: 560px) {
    .psim-hud-top {
        flex-direction: column;
        align-items: stretch;
    }

    .psim-chip {
        max-width: none;
        font-size: var(--font-size-xs);
    }

    .psim-meters {
        align-items: stretch;
    }

    .psim-meter-track {
        flex: 1;
    }

    .psim-hud-bottom {
        width: calc(100% - var(--space-6));
        justify-content: center;
    }

    .psim-action {
        flex: 1;
    }

    .psim-result-verdict {
        font-size: var(--font-size-xl);
    }
}

/* short laptops: keep the whole stage + its action dock above the fold,
   and let the result card breathe without scrolling */
@media (min-width: 921px) and (max-height: 860px) {
    .psim-stage {
        aspect-ratio: 16 / 8;
        max-height: 440px;
    }

    .psim-result-verdict {
        font-size: var(--font-size-xl);
    }

    .psim-result {
        gap: var(--space-1);
        padding: var(--space-3);
    }
}

@media (prefers-reduced-motion: reduce) {
    .psim-loading::after {
        animation: none;
    }

    .psim-meter-fill {
        transition: none;
    }
}