/* ============================================================
   Atlas webapp components — pure CSS, public-page palette,
   iOS-aligned. All primitives prefixed `.f-` to avoid collision
   with legacy classes. Tokens are --f-* (see tokens.css).
   Light is the :root default; dark cascades via [data-theme="dark"].
   ============================================================ */

/* ---------- Layout helpers ---------- */
/* 80px top on mobile clears the fixed .new-header. On desktop the header is
   hidden so we drop back to a normal page top so content top-aligns. */
.f-page          { max-width: 680px; margin: 0 auto; padding: 80px 16px 24px; }
@media (min-width: 769px) {
    .f-page { padding-top: 24px; }
}
.f-page--narrow  { max-width: 520px; }
.f-page--wide    { max-width: 980px; }

.f-stack         { display: flex; flex-direction: column; gap: 16px; }
.f-stack--sm     { gap: 8px; }
.f-stack--lg     { gap: 24px; }
.f-row           { display: flex; align-items: center; gap: 12px; }
.f-row--between  { justify-content: space-between; }
.f-row--center   { justify-content: center; }
.f-grow          { flex: 1; min-width: 0; }
.f-center        { text-align: center; }

/* ---------- Page header ---------- */
.f-page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 20px;
}
/* On mobile the global app header already shows the section title — hide the in-page
   duplicate. If the header is now empty (title was its only child), collapse it entirely
   so we don't leave a phantom margin. */
@media (max-width: 768px) {
    .f-page-header > .f-page-title { display: none; }
    .f-page-header:has(> .f-page-title:only-child) {
        display: none;
    }
}
/* Page title — matches public-page section H2: Inter, clamp-sized, tight tracking */
.f-page-title {
    font-family: Inter, system-ui, sans-serif;
    font-size: clamp(1.75rem, 4.4vw, 34px);
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1.15;
    color: var(--f-ink);
    margin: 0;
}
/* Hero-style title — Mona Sans for welcome cards, big amounts, etc. */
.f-page-title--display {
    font-family: 'Mona Sans', 'Inter', system-ui, sans-serif;
    font-feature-settings: "ss02", "ss03";
    font-size: clamp(1.75rem, 5vw, 38px);
    font-weight: 700;
    letter-spacing: -0.025em;
}
.f-page-subtitle {
    font-size: 17px;
    color: var(--f-ink-soft);
    line-height: 1.55;
    letter-spacing: -0.01em;
    margin: 0;
}
.f-section-title {
    font-family: Inter, system-ui, sans-serif;
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--f-ink);
    margin: 0 0 12px;
}
/* Eyebrow — public-page style: dark gradient pill with circle dots flanking the text */
.f-section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 3px 11px;
    border-radius: 8px;
    background: linear-gradient(204deg, #292929 3%, #666666 51%, #292929 100%);
    color: #ffffff;
    font-family: 'Mona Sans', 'Inter', system-ui, sans-serif;
    font-feature-settings: "ss02", "ss03";
    font-size: 13px;
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0.005em;
    margin-bottom: 12px;
}
.f-section-eyebrow::before,
.f-section-eyebrow::after {
    content: '';
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--f-accent), var(--accent-secondary));
    flex-shrink: 0;
}

/* Marketing variant — slightly larger pill with gray-dotted circle dots
   instead of accent-blue gradient dots. Uses Inter (not Mona Sans) to match
   the public-page eyebrow style across templates/index.html, brand.html,
   careers.html, etc. */
.f-section-eyebrow--dotted {
    font-family: var(--f-font-body);
    padding: 0.16rem 0.7rem;
    font-size: 15px;
    margin-bottom: 0.5rem;
}
.f-section-eyebrow--dotted::before,
.f-section-eyebrow--dotted::after {
    width: 11px;
    height: 11px;
    background:
        radial-gradient(circle at center, rgb(102, 102, 102) 0 2.2px, transparent 2.6px),
        rgb(201, 201, 201);
    border: 1px solid rgb(161, 161, 161);
}

/* ---------- Card — matches public bento/feature-card aesthetic (chunky radius, soft shadow) ---------- */
.f-card {
    background: var(--f-bg-raised);
    border: 1px solid var(--f-border-soft);
    border-radius: 22px;
    padding: 20px;
    box-shadow: var(--f-shadow-2);
}
.f-card--tint   {
    background: linear-gradient(180deg, #e2e4e9 0%, #ffffff 100%);
    border-color: var(--f-border);
}
[data-theme="dark"] .f-card--tint {
    background: linear-gradient(180deg, #1a1a1a 0%, #141414 100%);
    border-color: #1f1f1f;
}
.f-card--flat     { border: 0; box-shadow: none; }
.f-card--raised   { box-shadow: 0 8px 32px -12px rgba(15, 23, 42, 0.10); }
.f-card--padded   { padding: 28px; border-radius: 26px; }
.f-card--tight    { padding: 14px; border-radius: 18px; }
.f-card--clickable {
    cursor: pointer;
    transition: border-color 0.18s ease, transform 0.12s ease, box-shadow 0.18s ease;
}
.f-card--clickable:hover  { border-color: var(--f-border); box-shadow: var(--f-shadow-3); }
.f-card--clickable:active { transform: scale(0.995); }

/* ---------- Button — matches public `.btn-primary` / `.btn-hero-*` (rectangular, gradient fills, font-display) ---------- */
.f-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Mona Sans', 'Inter', system-ui, sans-serif;
    font-feature-settings: "ss02", "ss03";
    font-weight: 600;
    font-size: 15px;
    line-height: 1;
    border: 1px solid transparent;
    border-radius: 12px;
    padding: 12px 22px;
    cursor: pointer;
    transition: background 0.2s ease, filter 0.2s ease, opacity 0.12s ease, transform 0.12s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    user-select: none;
    -webkit-user-select: none;
    text-decoration: none;
    outline: none;
    white-space: nowrap;
}
.f-btn:active   { transform: scale(0.98); }
.f-btn:disabled { cursor: not-allowed; opacity: 0.5; }
.f-btn:focus-visible { box-shadow: 0 0 0 3px rgba(0, 176, 241, 0.25); }

/* Primary — accent gradient (mirrors `.btn-hero-primary`) */
.f-btn--primary {
    background: linear-gradient(180deg, var(--f-accent) 0%, var(--f-accent-hover) 100%);
    color: #ffffff;
}
.f-btn--primary:hover {
    background: linear-gradient(180deg, var(--f-accent-hover) 0%, #007fb3 100%);
}

/* Secondary — soft tint gradient with white border (mirrors `.btn-hero-secondary`) */
.f-btn--secondary {
    background: linear-gradient(180deg, var(--f-bg-sunken) 0%, #ffffff 100%);
    color: var(--f-ink);
    border: 1px solid var(--f-border);
}
.f-btn--secondary:hover {
    background: linear-gradient(180deg, #ebecef 0%, var(--f-bg-sunken) 100%);
}
[data-theme="dark"] .f-btn--secondary {
    background: linear-gradient(180deg, #1f1f1f 0%, #141414 100%);
    border-color: #2a2a2a;
}
[data-theme="dark"] .f-btn--secondary:hover {
    background: linear-gradient(180deg, #2a2a2a 0%, #1a1a1a 100%);
}

/* Ghost */
.f-btn--ghost { background: transparent; color: var(--f-ink); }
.f-btn--ghost:hover { background: var(--f-bg-sunken); }

/* Accent ghost — subtle blue tint */
.f-btn--accent-ghost { background: rgba(0, 176, 241, 0.10); color: var(--f-accent); }
.f-btn--accent-ghost:hover { background: rgba(0, 176, 241, 0.18); }

/* Danger */
.f-btn--danger  { background: linear-gradient(180deg, #ef4444 0%, #dc2626 100%); color: #ffffff; }
.f-btn--danger:hover { filter: brightness(0.94); }

/* Dark — public `.btn-primary` style: deep gradient (light theme) */
.f-btn--dark    {
    background: linear-gradient(180deg, #1a1a1a 0%, #050505 100%);
    color: #ffffff;
}
.f-btn--dark:hover {
    background: linear-gradient(180deg, #2a2a2a 0%, #0a0a0a 100%);
}
[data-theme="dark"] .f-btn--dark {
    background: linear-gradient(180deg, #ffffff 0%, #f0f0f0 100%);
    color: #000000;
}
[data-theme="dark"] .f-btn--dark:hover {
    background: linear-gradient(180deg, #f0f0f0 0%, #e5e7eb 100%);
}

/* Sizes */
.f-btn--lg      { padding: 16px 28px; font-size: 17px; border-radius: 14px; min-height: 56px; }
.f-btn--sm      { padding: 9px 16px; font-size: 13px; border-radius: 10px; }
.f-btn--xs      { padding: 7px 12px; font-size: 12px; border-radius: 8px; }
.f-btn--block   { display: flex; width: 100%; }
.f-btn--icon    {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 12px;
}
.f-btn--icon-sm { width: 36px; height: 36px; border-radius: 10px; }

/* ---------- Input ---------- */
.f-input {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 16px;
    background: var(--f-bg-sunken);
    border: 1px solid var(--f-border);
    border-radius: 12px;
    color: var(--f-ink);
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.18s ease, background 0.18s ease;
    outline: none;
}
.f-input:focus { border-color: var(--f-accent); background: var(--f-bg-raised); }
.f-input::placeholder { color: var(--f-ink-muted); }
.f-input.error { border-color: var(--f-error); }
.f-input--pill { border-radius: 999px; padding-left: 20px; padding-right: 20px; }

.f-input-wrap   { position: relative; }
.f-input-wrap__icon {
    position: absolute;
    top: 50%;
    left: 16px;
    transform: translateY(-50%);
    color: var(--f-ink-muted);
    pointer-events: none;
    font-size: 20px;
}
.f-input-wrap--icon .f-input { padding-left: 44px; }

.f-textarea {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 16px;
    background: var(--f-bg-sunken);
    border: 1px solid var(--f-border);
    border-radius: 12px;
    color: var(--f-ink);
    font-size: 15px;
    font-family: inherit;
    resize: vertical;
    min-height: 96px;
    outline: none;
    transition: border-color 0.18s ease;
}
.f-textarea:focus { border-color: var(--f-accent); }

/* ---------- List + List row (iOS FanityListRow) ---------- */
.f-list {
    display: flex;
    flex-direction: column;
    background: var(--f-bg-raised);
    border: 1px solid var(--f-border-soft);
    border-radius: 16px;
    overflow: hidden;
}

.f-list-row {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 56px;
    padding: 14px 16px;
    cursor: pointer;
    transition: background 0.12s ease;
    background: transparent;
    border: 0;
    text-align: left;
    width: 100%;
    font-family: inherit;
    color: var(--f-ink);
}
.f-list-row:hover { background: var(--f-bg-hover); }
.f-list-row + .f-list-row { border-top: 1px solid var(--f-border-soft); }
.f-list-row__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--f-bg-sunken);
    color: var(--f-ink-soft);
    border-radius: 8px;
}
.f-list-row__icon i, .f-list-row__icon svg { font-size: 20px; width: 20px; height: 20px; }
.f-list-row__main     { flex: 1; min-width: 0; }
.f-list-row__title    {
    display: block;
    font-size: 15px;
    font-weight: 500;
    color: var(--f-ink);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.f-list-row__subtitle {
    display: block;
    font-size: 13px;
    color: var(--f-ink-soft);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-top: 2px;
}
.f-list-row__detail   { font-size: 13px; color: var(--f-ink-soft); flex-shrink: 0; }
.f-list-row__chevron  { color: var(--f-ink-muted); flex-shrink: 0; }

.f-list-row--destructive .f-list-row__title { color: var(--f-error); }
.f-list-row--destructive .f-list-row__icon  {
    color: var(--f-error);
    background: var(--f-error-soft);
}

/* ---------- Badge / Chip ---------- */
.f-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
}
.f-badge--accent  { background: var(--f-accent-soft);  color: var(--f-accent); }
.f-badge--success { background: var(--f-success-soft); color: var(--f-success-strong); }
.f-badge--error   { background: var(--f-error-soft);   color: var(--f-error-strong); }
.f-badge--warning { background: var(--f-warning-soft); color: var(--f-warning-strong); }
.f-badge--neutral { background: var(--f-bg-sunken);    color: var(--f-ink-soft); }
.f-badge--gold    { background: linear-gradient(135deg, #E8C840, var(--f-tier-gold)); color: #ffffff; }
.f-badge--ultra   { background: linear-gradient(135deg, #D4AAFF, #9B8AFF);            color: #ffffff; }

.f-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--f-bg-sunken);
    border: 1px solid var(--f-border-soft);
    color: var(--f-ink-soft);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
    font-family: inherit;
}
.f-chip:hover     { background: var(--f-bg-hover); }
.f-chip--active   {
    background: var(--f-accent);
    border-color: var(--f-accent);
    color: var(--f-accent-on);
}

/* ---------- Avatar ---------- */
.f-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--f-bg-sunken);
    color: var(--f-ink);
    font-weight: 600;
    border-radius: 999px;
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
    text-transform: uppercase;
}
.f-avatar img { width: 100%; height: 100%; object-fit: cover; }
.f-avatar--xs  { width: 24px; height: 24px; font-size: 10px; }
.f-avatar--sm  { width: 32px; height: 32px; font-size: 12px; }
.f-avatar--md  { width: 40px; height: 40px; font-size: 14px; }
.f-avatar--lg  { width: 56px; height: 56px; font-size: 18px; }
.f-avatar--xl  { width: 80px; height: 80px; font-size: 24px; }
.f-avatar--2xl { width: 96px; height: 96px; font-size: 28px; }

.f-avatar--ring-online::after {
    content: '';
    position: absolute;
    bottom: 0; right: 0;
    width: 25%; height: 25%;
    background: var(--f-success);
    border-radius: 999px;
    border: 2px solid var(--f-bg);
}

/* ---------- Empty state (iOS FanityEmptyState) ---------- */
.f-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 48px 24px;
}
.f-empty__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    background: var(--f-bg-sunken);
    color: var(--f-ink-muted);
    border-radius: 999px;
    margin-bottom: 16px;
}
.f-empty__icon i, .f-empty__icon svg { font-size: 36px; width: 36px; height: 36px; }
.f-empty__title { margin: 0 0 4px; font-size: 18px; font-weight: 600; color: var(--f-ink); }
.f-empty__message {
    margin: 0 0 20px;
    max-width: 320px;
    font-size: 14px;
    color: var(--f-ink-soft);
    line-height: 1.5;
}
.f-empty--error   .f-empty__icon { background: var(--f-warning-soft); color: var(--f-warning-strong); }
.f-empty--success .f-empty__icon { background: var(--f-success-soft); color: var(--f-success-strong); }

/* ---------- Toggle (iOS-style switch) ---------- */
.f-toggle { position: relative; display: inline-block; cursor: pointer; width: 51px; height: 31px; flex-shrink: 0; }
.f-toggle input {
    position: absolute;
    width: 1px; height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
}
.f-toggle__slider {
    position: absolute;
    inset: 0;
    background: var(--f-bg-hover);
    border-radius: 999px;
    transition: background 0.2s ease;
}
.f-toggle__slider::before {
    content: '';
    position: absolute;
    top: 2px; left: 2px;
    width: 27px; height: 27px;
    background: #ffffff;
    border-radius: 999px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s ease;
}
.f-toggle input:checked + .f-toggle__slider          { background: var(--f-success); }
.f-toggle input:checked + .f-toggle__slider::before  { transform: translateX(20px); }

/* ---------- Shimmer (skeleton loader) ---------- */
/* Base shimmer — apply to any element to give it a moving gradient. Theme-aware via vars. */
.f-shimmer {
    background: linear-gradient(90deg, var(--f-bg-sunken) 0%, var(--f-bg-hover) 50%, var(--f-bg-sunken) 100%);
    background-size: 200% 100%;
    animation: f-shimmer 1.5s linear infinite;
    border-radius: 8px;
}
@keyframes f-shimmer {
    0%   { background-position:  200% 0; }
    100% { background-position: -200% 0; }
}

/* Reusable skeleton primitives — compose with .f-shimmer or use standalone.
   Sizes can be overridden via inline `style="width:..; height:..;"`. */
.f-skel { /* generic skeleton block */
    background: linear-gradient(90deg, var(--f-bg-sunken) 0%, var(--f-bg-hover) 50%, var(--f-bg-sunken) 100%);
    background-size: 200% 100%;
    animation: f-shimmer 1.5s linear infinite;
    border-radius: 8px;
    display: inline-block;
}
.f-skel--line     { height: 14px; border-radius: 6px; }
.f-skel--line-lg  { height: 18px; border-radius: 6px; }
.f-skel--line-xl  { height: 26px; border-radius: 6px; }
.f-skel--circle   { border-radius: 999px; aspect-ratio: 1 / 1; width: 40px; }
.f-skel--circle-lg{ border-radius: 999px; aspect-ratio: 1 / 1; width: 80px; }
.f-skel--rect     { border-radius: 12px; height: 120px; width: 100%; display: block; }
.f-skel--media    { border-radius: 14px; aspect-ratio: 16 / 10; width: 100%; display: block; }
.f-skel--button   { height: 32px; width: 96px; border-radius: 10px; }
.f-skel--pill     { height: 22px; width: 60px; border-radius: 999px; }

/* Utility — flat solid grey placeholder (for avatars/banners while loading,
   when you want NO movement — matches the app's "no flash" pattern). */
.f-skel-static {
    background: var(--f-border);
}

/* ---------- Divider ---------- */
.f-divider {
    height: 1px;
    background: var(--f-border-soft);
    border: 0;
    margin: 16px 0;
}

/* ---------- Tabs (segmented) ---------- */
.f-tabs {
    display: flex;
    gap: 4px;
    background: var(--f-bg-sunken);
    border-radius: 12px;
    padding: 4px;
}
.f-tab {
    flex: 1;
    background: transparent;
    border: 0;
    padding: 8px 12px;
    border-radius: 8px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    color: var(--f-ink-soft);
    cursor: pointer;
    transition: background 0.18s ease, color 0.18s ease;
}
.f-tab:hover     { color: var(--f-ink); }
.f-tab--active   { background: var(--f-bg-raised); color: var(--f-ink); box-shadow: var(--f-shadow-1); }

/* ---------- Underlined tabs ---------- */
.f-tabs-underline {
    display: flex;
    border-bottom: 1px solid var(--f-border-soft);
    margin: 0;
    padding: 0 16px;
    gap: 8px;
}
.f-tab-underline {
    background: transparent;
    border: 0;
    padding: 14px 6px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    color: var(--f-ink-soft);
    cursor: pointer;
    position: relative;
    transition: color 0.18s ease;
}
.f-tab-underline:hover { color: var(--f-ink); }
.f-tab-underline--active { color: var(--f-ink); }
.f-tab-underline--active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0; right: 0;
    height: 2px;
    background: var(--f-accent);
    border-radius: 2px;
}

/* ---------- Section header (with action) ---------- */
.f-section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}
.f-section-head__action {
    background: transparent;
    border: 0;
    color: var(--f-accent);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    padding: 0;
}
.f-section-head__action:hover { color: var(--f-accent-hover); }

/* ---------- Modifiers ---------- */
.f-text-muted { color: var(--f-ink-muted); }
.f-text-secondary { color: var(--f-ink-soft); }
.f-text-display {
    font-family: 'Mona Sans', 'Inter', system-ui, sans-serif;
    font-feature-settings: "ss02", "ss03";
}


/* ============================================================
   f-overlay — single base for every dismissible floating layer.
   Consolidates: modal, popup, toast/notification, bottom-sheet,
   drawer, popover, dropdown. The variant decides placement,
   scrim, and animation; everything else is shared.

   Lifecycle (driven by JS helper, see ts/modal.ts to be built):
     1. Add element to DOM with .f-overlay + variant class
     2. Add .is-open on the next frame -> entry animation plays
     3. To dismiss: add .is-closing -> exit animation plays
     4. Listen for transitionend -> remove element

   Tokens are --f-* only. Theme-aware via [data-theme="dark"].
   ============================================================ */

.f-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--f-z-overlay);
    display: none;
    pointer-events: none;
}
.f-overlay.is-open {
    display: block;
    pointer-events: auto;
}

.f-overlay__scrim {
    position: absolute;
    inset: 0;
    background: var(--f-scrim);
    opacity: 0;
    transition: opacity var(--f-dur-base) var(--f-ease-out);
}
.f-overlay.is-open    > .f-overlay__scrim { opacity: 1; }
.f-overlay.is-closing > .f-overlay__scrim { opacity: 0; }

.f-overlay__content {
    position: absolute;
    background: var(--f-bg-raised);
    color: var(--f-ink);
    border: 1px solid var(--f-border-soft);
    border-radius: var(--f-radius-lg);
    box-shadow: var(--f-shadow-4);
    max-height: calc(100vh - var(--f-space-8));
    max-height: calc(100dvh - var(--f-space-8));
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Shared slots */
.f-overlay__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--f-space-3);
    padding: var(--f-space-5) var(--f-space-6);
    border-bottom: 1px solid var(--f-border-soft);
    flex: 0 0 auto;
}
.f-overlay__title {
    font-family: var(--f-font-display);
    font-size: var(--f-fs-xl);
    font-weight: var(--f-fw-semibold);
    line-height: var(--f-lh-snug);
    color: var(--f-ink);
    margin: 0;
}
.f-overlay__body {
    padding: var(--f-space-6);
    overflow-y: auto;
    flex: 1 1 auto;
    color: var(--f-ink);
}
.f-overlay__actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--f-space-3);
    padding: var(--f-space-4) var(--f-space-6);
    border-top: 1px solid var(--f-border-soft);
    flex: 0 0 auto;
}
.f-overlay__close {
    width: 32px;
    height: 32px;
    border-radius: var(--f-radius-pill);
    background: transparent;
    border: 0;
    color: var(--f-ink-soft);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background var(--f-dur-fast) var(--f-ease-out),
                color var(--f-dur-fast) var(--f-ease-out);
}
.f-overlay__close:hover {
    background: var(--f-bg-hover);
    color: var(--f-ink);
}
.f-overlay__handle {
    width: 36px;
    height: 4px;
    border-radius: var(--f-radius-pill);
    background: var(--f-border);
    margin: var(--f-space-3) auto var(--f-space-2);
    flex: 0 0 auto;
}
.f-overlay__icon {
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--f-ink-soft);
    flex: 0 0 auto;
}

/* ----- Variant: modal — centered card with scrim ----- */
.f-overlay--modal { z-index: var(--f-z-modal); }
.f-overlay--modal > .f-overlay__content {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.96);
    opacity: 0;
    width: min(560px, calc(100vw - var(--f-space-8)));
    transition: opacity var(--f-dur-base) var(--f-ease-out),
                transform var(--f-dur-base) var(--f-ease-spring);
}
.f-overlay--modal.is-open > .f-overlay__content {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}
.f-overlay--modal.is-closing > .f-overlay__content {
    transform: translate(-50%, -50%) scale(0.96);
    opacity: 0;
}
.f-overlay--modal.f-overlay--lg > .f-overlay__content { width: min(800px, calc(100vw - var(--f-space-8))); }
.f-overlay--modal.f-overlay--sm > .f-overlay__content { width: min(400px, calc(100vw - var(--f-space-8))); }

/* ----- Variant: sheet — bottom sheet on mobile, modal on desktop ----- */
.f-overlay--sheet { z-index: var(--f-z-sheet); }
.f-overlay--sheet > .f-overlay__content {
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-height: 90vh;
    max-height: 90dvh;
    border-radius: var(--f-radius-2xl) var(--f-radius-2xl) 0 0;
    border-bottom: 0;
    transform: translateY(100%);
    transition: transform var(--f-dur-slow) var(--f-ease-out);
}
.f-overlay--sheet.is-open    > .f-overlay__content { transform: translateY(0); }
.f-overlay--sheet.is-closing > .f-overlay__content { transform: translateY(100%); }
@media (min-width: 768px) {
    .f-overlay--sheet > .f-overlay__content {
        top: 50%;
        left: 50%;
        right: auto;
        bottom: auto;
        transform: translate(-50%, -50%) scale(0.96);
        opacity: 0;
        width: min(560px, calc(100vw - var(--f-space-8)));
        max-height: calc(100vh - var(--f-space-8));
        max-height: calc(100dvh - var(--f-space-8));
        border-radius: var(--f-radius-lg);
        border-bottom: 1px solid var(--f-border-soft);
        transition: opacity var(--f-dur-base) var(--f-ease-out),
                    transform var(--f-dur-base) var(--f-ease-spring);
    }
    .f-overlay--sheet.is-open    > .f-overlay__content { transform: translate(-50%, -50%) scale(1); opacity: 1; }
    .f-overlay--sheet.is-closing > .f-overlay__content { transform: translate(-50%, -50%) scale(0.96); opacity: 0; }
    .f-overlay__handle { display: none; }
}

/* ----- Variant: drawer — slide-in side panel ----- */
.f-overlay--drawer { z-index: var(--f-z-drawer); }
.f-overlay--drawer > .f-overlay__content {
    top: 0;
    bottom: 0;
    width: min(360px, calc(100vw - var(--f-space-12)));
    max-height: none;
    border-radius: 0;
    transition: transform var(--f-dur-slow) var(--f-ease-out);
}
.f-overlay--drawer-left  > .f-overlay__content { left: 0;  transform: translateX(-100%); border-left: 0; }
.f-overlay--drawer-right > .f-overlay__content { right: 0; transform: translateX(100%);  border-right: 0; }
.f-overlay--drawer.is-open > .f-overlay__content { transform: translateX(0); }
.f-overlay--drawer-left.is-closing  > .f-overlay__content { transform: translateX(-100%); }
.f-overlay--drawer-right.is-closing > .f-overlay__content { transform: translateX(100%); }

/* ----- Variant: toast — ephemeral, no scrim, top-right stack ----- */
.f-overlay--toast {
    pointer-events: none;
    z-index: var(--f-z-toast);
}
.f-overlay--toast > .f-overlay__scrim { display: none; }
.f-overlay--toast > .f-overlay__content {
    top: var(--f-space-4);
    right: var(--f-space-4);
    width: min(360px, calc(100vw - var(--f-space-8)));
    max-height: none;
    pointer-events: auto;
    box-shadow: var(--f-shadow-3);
    opacity: 0;
    transform: translateY(-12px) scale(0.98);
    border-left: 4px solid var(--f-border);
    transition: opacity var(--f-dur-base) var(--f-ease-out),
                transform var(--f-dur-base) var(--f-ease-spring);
}
.f-overlay--toast.is-open    > .f-overlay__content { opacity: 1; transform: translateY(0) scale(1); }
.f-overlay--toast.is-closing > .f-overlay__content { opacity: 0; transform: translateY(-12px) scale(0.98); }
@media (max-width: 767px) {
    .f-overlay--toast > .f-overlay__content {
        top: var(--f-space-3);
        left: var(--f-space-3);
        right: var(--f-space-3);
        width: auto;
    }
}
/* Tonal toast variants — share the base, swap accent strip */
.f-overlay--toast.f-overlay--success > .f-overlay__content { border-left-color: var(--f-success); }
.f-overlay--toast.f-overlay--error   > .f-overlay__content { border-left-color: var(--f-error); }
.f-overlay--toast.f-overlay--warning > .f-overlay__content { border-left-color: var(--f-warning-strong); }
.f-overlay--toast.f-overlay--info    > .f-overlay__content { border-left-color: var(--f-accent); }
.f-overlay--toast.f-overlay--success .f-overlay__icon { color: var(--f-success-strong); }
.f-overlay--toast.f-overlay--error   .f-overlay__icon { color: var(--f-error-strong); }
.f-overlay--toast.f-overlay--warning .f-overlay__icon { color: var(--f-warning-strong); }
.f-overlay--toast.f-overlay--info    .f-overlay__icon { color: var(--f-accent); }
/* Tighter toast body — icon + text + dismiss layout */
.f-overlay--toast .f-overlay__body {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--f-space-3);
    padding: var(--f-space-3) var(--f-space-4);
}

/* ----- Variant: popup — small centered notice (e.g. "Streak unlocked!") ----- */
.f-overlay--popup { z-index: var(--f-z-popup); }
.f-overlay--popup > .f-overlay__content {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.92);
    opacity: 0;
    width: min(360px, calc(100vw - var(--f-space-8)));
    text-align: center;
    transition: opacity var(--f-dur-base) var(--f-ease-out),
                transform var(--f-dur-base) var(--f-ease-spring);
}
.f-overlay--popup.is-open    > .f-overlay__content { transform: translate(-50%, -50%) scale(1);    opacity: 1; }
.f-overlay--popup.is-closing > .f-overlay__content { transform: translate(-50%, -50%) scale(0.92); opacity: 0; }

/* ----- Variant: popover — anchored to a trigger, no scrim ----- */
.f-overlay--popover {
    pointer-events: none;
    z-index: var(--f-z-popover);
    inset: auto;  /* JS sets top/left from anchor */
}
.f-overlay--popover > .f-overlay__scrim { display: none; }
.f-overlay--popover > .f-overlay__content {
    position: static;
    pointer-events: auto;
    width: max-content;
    max-width: 320px;
    box-shadow: var(--f-shadow-3);
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity var(--f-dur-fast) var(--f-ease-out),
                transform var(--f-dur-fast) var(--f-ease-out);
}
.f-overlay--popover.is-open > .f-overlay__content { opacity: 1; transform: translateY(0); }

/* ----- Variant: dropdown — anchored menu, no scrim ----- */
.f-overlay--dropdown {
    pointer-events: none;
    z-index: var(--f-z-dropdown);
    inset: auto;
}
.f-overlay--dropdown > .f-overlay__scrim { display: none; }
.f-overlay--dropdown > .f-overlay__content {
    position: static;
    pointer-events: auto;
    min-width: 180px;
    padding: var(--f-space-1) 0;
    box-shadow: var(--f-shadow-3);
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity var(--f-dur-fast) var(--f-ease-out),
                transform var(--f-dur-fast) var(--f-ease-out);
}
.f-overlay--dropdown.is-open > .f-overlay__content { opacity: 1; transform: translateY(0); }
.f-overlay__menu-item {
    display: flex;
    align-items: center;
    gap: var(--f-space-3);
    padding: var(--f-space-2) var(--f-space-4);
    color: var(--f-ink);
    background: transparent;
    border: 0;
    width: 100%;
    text-align: left;
    cursor: pointer;
    font-family: var(--f-font-body);
    font-size: var(--f-fs-sm);
    transition: background var(--f-dur-fast) var(--f-ease-out);
}
.f-overlay__menu-item:hover { background: var(--f-bg-hover); }
.f-overlay__menu-item--danger        { color: var(--f-error-strong); }
.f-overlay__menu-item--danger:hover  { background: var(--f-error-soft); }

/* Reduced motion — collapse all overlay transitions */
@media (prefers-reduced-motion: reduce) {
    .f-overlay__scrim,
    .f-overlay__content {
        transition-duration: 0.001ms !important;
    }
}