/* Shared design tokens matching the native VFTCam apps (iOS SphereStyle). Add tokens only; do not rename or remove. */

@font-face {
    font-family: 'Source Sans 3';
    src: url('../fonts/SourceSans3.woff2') format('woff2');
    font-weight: 200 900;
    font-style: normal;
    font-display: swap;
}

:root {
    /* Colors (iOS PhotosphereStyle.swift) */
    --vft-bg: #1c1a16;
    --vft-surface: #2e2c27;
    --vft-surface-2: #3a3832;
    --vft-home-bg: #0b1016;
    --vft-red: #b1040e;
    --vft-red-pressed: #8f030b;
    --vft-amber: #e98300;
    --vft-yellow: #fedd5c;
    --vft-mint: #1aecba;
    --vft-blue: #52c2ff;
    --vft-text: #ffffff;
    --vft-text-muted: #c0c0bf;
    --vft-text-dim: rgba(255, 255, 255, 0.6);
    --vft-border: rgba(255, 255, 255, 0.16);
    --vft-fill-subtle: rgba(255, 255, 255, 0.06);
    --vft-fill-soft: rgba(255, 255, 255, 0.10);
    --vft-scrim: rgba(0, 0, 0, 0.45);
    --vft-scrim-strong: rgba(0, 0, 0, 0.72);
    --vft-danger: #ff453a;
    --vft-grid-line: rgba(0, 255, 255, 0.14);
    --vft-toggle-on: #008566;

    /* Typography */
    --vft-font: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --vft-font-mono: ui-monospace, 'SF Mono', Menlo, monospace;
    --vft-fs-large-title: 34px;
    --vft-fs-title: 28px;
    --vft-fs-title2: 24px;
    --vft-fs-title3: 21px;
    --vft-fs-headline: 18px;
    --vft-fs-body: 18px;
    --vft-fs-subheadline: 16px;
    --vft-fs-footnote: 14px;
    --vft-fs-caption: 13px;
    --vft-fw-regular: 400;
    --vft-fw-semibold: 600;
    --vft-fw-bold: 700;
    --vft-eyebrow-tracking: 2.5px;

    /* Radii */
    --vft-radius-sm: 10px;
    --vft-radius: 14px;
    --vft-radius-lg: 20px;
    --vft-radius-sheet: 28px;
    --vft-radius-pill: 999px;

    /* Spacing */
    --vft-space-1: 4px;
    --vft-space-2: 8px;
    --vft-space-3: 12px;
    --vft-space-4: 16px;
    --vft-space-5: 20px;
    --vft-space-6: 24px;
    --vft-space-8: 32px;
    --vft-gutter: 22px;

    /* Sizes */
    --vft-button-height: 54px;
    --vft-icon-button: 46px;
    --vft-touch-min: 44px;

    /* Shadows */
    --vft-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
    --vft-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    --vft-shadow-sheet: 0 -8px 40px rgba(0, 0, 0, 0.55);

    /* Motion */
    --vft-press-duration: 160ms;
    --vft-ease-reveal: cubic-bezier(0.3, 0.7, 0.2, 1);

    /* Safe areas */
    --vft-safe-top: env(safe-area-inset-top, 0px);
    --vft-safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* Buttons (iOS SphereButtonStyle / SphereIconButton) */
.vft-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--vft-space-2);
    width: 100%;
    min-height: var(--vft-button-height);
    padding: 0 18px;
    border-radius: var(--vft-radius);
    border: 1px solid var(--vft-border);
    background: var(--vft-fill-subtle);
    color: var(--vft-text);
    font-family: var(--vft-font);
    font-size: var(--vft-fs-headline);
    font-weight: var(--vft-fw-semibold);
    line-height: 1.2;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: opacity var(--vft-press-duration) ease-out, transform var(--vft-press-duration) ease-out;
}
.vft-btn:active { opacity: 0.7; transform: scale(0.98); }
.vft-btn:disabled { opacity: 0.4; cursor: default; }
.vft-btn:focus-visible { outline: 2px solid var(--vft-blue); outline-offset: 2px; }
.vft-btn--primary { background: var(--vft-red); border-color: transparent; }
.vft-btn--danger { color: var(--vft-danger); }

.vft-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--vft-icon-button);
    height: var(--vft-icon-button);
    border-radius: var(--vft-radius);
    border: none;
    background: var(--vft-scrim);
    color: var(--vft-text);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
.vft-icon-btn img { width: 22px; height: 22px; filter: brightness(0) invert(1); }
.vft-icon-btn:focus-visible { outline: 2px solid var(--vft-blue); outline-offset: 2px; }

.vft-eyebrow {
    font-family: var(--vft-font);
    font-size: var(--vft-fs-caption);
    font-weight: var(--vft-fw-bold);
    letter-spacing: var(--vft-eyebrow-tracking);
    text-transform: uppercase;
    color: var(--vft-amber);
}

@media (prefers-reduced-motion: reduce) {
    .vft-btn:active { transform: none; }
}
@media (prefers-contrast: more) {
    :root { --vft-scrim: rgba(0, 0, 0, 1); --vft-border: rgba(255, 255, 255, 0.5); --vft-text-muted: #e6e6e5; }
}