/**
 * Platform overrides — native (iOS / Android) and desktop-app (Electron) specifics.
 *
 * Loaded LAST so these win on specificity ties. Everything keys off the
 * data-platform contract set by Platform.applyPlatform(); there are NO more
 * scattered `body.app-ios` / `desktop-mode` hacks. The shared, variable-driven
 * insets (safe areas, title bar, floating nav) live in base.css + layout.css.
 * This file only holds the "fixed app frame" scroll model and a few native-only
 * paddings that have no meaning in the browser.
 */

/* ==========================================
   Fixed app frame — native apps and the desktop app do NOT scroll as one page;
   only .page-content scrolls internally (no full-page rubber-banding). The plain
   browser keeps normal document scroll, so these rules never apply there.
   ========================================== */

:root[data-platform="ios"],
:root[data-platform="android"],
:root[data-platform="electron"] {
    height: 100dvh;
    overflow: hidden;
}

[data-platform="ios"] body,
[data-platform="android"] body,
[data-platform="electron"] body {
    height: 100dvh;
    overflow: hidden;
}

[data-platform="ios"] #app,
[data-platform="android"] #app,
[data-platform="electron"] #app {
    height: 100dvh;
    box-sizing: border-box;
    overflow: hidden;
}

[data-platform="ios"] .pages,
[data-platform="android"] .pages,
[data-platform="electron"] .pages {
    overflow: hidden;
    min-height: 0;
}

[data-platform="ios"] .page,
[data-platform="android"] .page,
[data-platform="electron"] .page {
    min-height: 0;
    overflow: hidden;
}

[data-platform="ios"] .page-content,
[data-platform="android"] .page-content,
[data-platform="electron"] .page-content {
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 0;
}

/* Scroll-under: the internal scroller reaches the screen bottom so the list scrolls
   UNDER the translucent pill. The bottom gutter lives on the scroller's CONTENT — not
   on .pages, which (being overflow:hidden here) would shrink the scroller and stop the
   list above the pill. Scoped to `.pages .page-content` so the full-screen overlay
   (which covers the pill) is unaffected. */
[data-platform="ios"] .pages,
[data-platform="android"] .pages {
    padding-bottom: 0;
}

[data-platform="ios"] .pages .page-content,
[data-platform="android"] .pages .page-content {
    /* Content starts right at the safe-area line (where it slides under the status bar
       on scroll) instead of an oversized top gap. */
    padding-top: 0;
    padding-bottom: calc(var(--bottom-nav-space) + var(--space-6));
}

/* ==========================================
   Native mobile — auth screens & fullscreen popups honor the safe areas
   ========================================== */

/* Auth pages are fullscreen & vertically centered — cancel the #app top inset */
[data-platform="ios"] #authContainer,
[data-platform="android"] #authContainer {
    margin-top: calc(-1 * var(--safe-area-top));
}

[data-platform="ios"] .auth-page,
[data-platform="android"] .auth-page {
    padding-top: var(--space-4);
}

/* Fullscreen popups clear the notch / home indicator */
[data-platform="ios"] .popup-header,
[data-platform="android"] .popup-header {
    padding-top: calc(var(--space-4) + var(--safe-area-top));
}

[data-platform="ios"] .popup-footer,
[data-platform="android"] .popup-footer {
    padding-bottom: calc(var(--space-4) + var(--safe-area-bottom));
}

/* Add/edit/view overlay: the sticky header already carries the safe-area top inset,
   so drop the container's extra top padding (it was doubling the top offset). */
[data-platform="ios"] .page-overlay .page-container,
[data-platform="android"] .page-overlay .page-container {
    padding-top: 0;
}

/* (Overlay header top/bottom spacing is handled on the shared sticky rule in pages.css,
   so it applies to web and native alike.) */

/* ==========================================
   Floating pill bottom nav — NATIVE mobile ONLY.
   The browser (even when narrow) keeps the default edge-to-edge bar from layout.css.
   ========================================== */

[data-platform="ios"] .footer,
[data-platform="android"] .footer {
    left: 50%;
    right: auto;
    /* Float low into the home-indicator zone (see --nav-bottom); toasts + content track this. */
    bottom: var(--nav-bottom);
    transform: translateX(-50%);
    height: var(--nav-height);
    width: auto;
    max-width: calc(100% - var(--space-6));
    padding: 0 var(--space-2);
    justify-content: center;
    border-radius: var(--radius-full);
    /* Liquid glass: translucent, heavily blurred, with a glass rim + top-edge sheen.
       Theme-aware via color-mix; falls back to the opaque base .footer bg on old webviews. */
    background: color-mix(in srgb, var(--color-bg-secondary) 68%, transparent);
    -webkit-backdrop-filter: blur(30px) saturate(200%);
    backdrop-filter: blur(30px) saturate(200%);
    border: 1px solid color-mix(in srgb, var(--color-text-primary) 10%, transparent);
    box-shadow: 0 10px 34px rgba(0, 0, 0, 0.22),
                inset 0 1px 0 color-mix(in srgb, white 30%, transparent);
    /* Smoothly shrink/grow (e.g. when minimized on scroll — toggled via .nav-min) */
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
                height 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.3s ease;
}

[data-platform="ios"] .tab-bar,
[data-platform="android"] .tab-bar {
    width: 100%;
    height: 100%;
    justify-content: center;
    gap: var(--space-1);
}

/* Icons only on the island */
[data-platform="ios"] .tab-label,
[data-platform="android"] .tab-label {
    display: none;
}

[data-platform="ios"] .tab-item,
[data-platform="android"] .tab-item {
    position: relative;
    width: 60px;
    min-width: 0;
    height: 100%;
    padding: 0;
    border-radius: 0;
    /* Center the icon vertically within the full-height item */
    justify-content: center;
    transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Poppy rounded-squircle highlight behind the active icon (matches the island's rounding) */
[data-platform="ios"] .tab-item::before,
[data-platform="android"] .tab-item::before {
    content: '';
    position: absolute;
    inset: 8px;
    border-radius: var(--radius-lg);
    background: var(--color-accent-bg);
    opacity: 0;
    transform: scale(0.4);
    transition: transform 0.32s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.18s ease;
    z-index: 0;
}

[data-platform="ios"] .tab-item.active::before,
[data-platform="android"] .tab-item.active::before {
    opacity: 1;
    transform: scale(1);
}

[data-platform="ios"] .tab-icon,
[data-platform="android"] .tab-icon {
    position: relative;
    z-index: 1;
    width: 26px;
    height: 26px;
    transition: transform 0.32s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Icon pops when its tab becomes active */
[data-platform="ios"] .tab-item.active .tab-icon,
[data-platform="android"] .tab-item.active .tab-icon {
    transform: scale(1.12);
}

/* Tactile press feedback */
[data-platform="ios"] .tab-item:active,
[data-platform="android"] .tab-item:active {
    transform: scale(0.88);
}

/* Minimized state (shrinks while scrolling down; JS toggles .nav-min on .footer) */
[data-platform="ios"] .footer.nav-min,
[data-platform="android"] .footer.nav-min {
    transform: translateX(-50%) scale(0.86);
    opacity: 0.92;
}