/* The Whole Feed — liquid-glass dark theme.
   Ported from a claude.ai/design liquid-glass design-system project (tokens/,
   components/, ui_kits/). Depth comes from translucent blurred panels over an
   ambient glow layer; motion is quick lifts and springy fades.
   Fonts: Fontshare webfonts with the native system stack as offline fallback. */
@import url("https://api.fontshare.com/v2/css?f[]=clash-display@500,600,700&f[]=general-sans@400,500,600,700&display=swap");

:root {
  /* --- base surfaces (dark, layered near-black → indigo-tinted charcoal) --- */
  --bg: #0f1117;
  --surface: #171a23;
  --surface-2: #1e2230;

  /* --border is decorative (cards, panels); --border-strong is used where a
     boundary must meet WCAG 1.4.11 non-text contrast (>=3:1). */
  --border: #2a2f40;
  --border-strong: #606880;
  --text: #e8eaf2;
  --text-dim: #9aa0b4;

  /* Accent roles are split so fill and foreground duties can't collide:
     --accent        fills & strokes — white text on it is >=4.5:1
     --accent-bg-hover darker hover fill for filled controls (6.5:1 w/ white)
     --accent-fg     FOREGROUND-only tint for text/strokes on dark surfaces
     --badge-text    lighter tint for tiny badge text on the badge fill */
  --accent: #5155e8;
  --accent-bg-hover: #4649db;
  --accent-fg: #7c7ef8;
  --badge-text: #9a9dff;
  --on-accent: #ffffff;
  --danger: #f87171;

  /* --- glass surfaces (liquid glass) ---
     Brighter, lens-like translucent fills that read as glass, not dark panels.
     A specular sheen, a bright hairline rim, and layered inset highlights +
     soft outer shadow give tactile depth. Panels sit over the ambient glow
     layer (.glass-glow) so backdrop-filter has color to refract. */
  --glass-panel: color-mix(in srgb, var(--surface-2) 52%, transparent);
  --glass-panel-2: color-mix(in srgb, var(--surface-2) 46%, transparent);
  /* Near-opaque backing for the sticky topbar only — at --glass-panel's 52%
     opacity, whatever bright content scrolls underneath the blur (an OG
     thumbnail, a light card) washes out the header text to near-invisible
     contrast. 90% keeps the glass sheen/blur look but pins the backdrop
     color close to --surface-2 regardless of what's behind it. */
  --glass-panel-opaque: color-mix(in srgb, var(--surface-2) 94%, transparent);
  --glass-border: color-mix(in srgb, white 18%, transparent);
  --glass-border-strong: color-mix(in srgb, white 30%, transparent);
  --glass-highlight: color-mix(in srgb, white 22%, transparent);
  --glass-highlight-lo: color-mix(in srgb, white 6%, transparent);
  --glass-shadow: rgba(4, 5, 11, 0.5);
  --glass-sheen: linear-gradient(155deg, rgba(255,255,255,0.16) 0%, rgba(255,255,255,0.04) 34%, rgba(255,255,255,0) 62%);
  --glass-filter: blur(var(--blur-panel)) saturate(165%);
  --glass-filter-strong: blur(var(--blur-panel-strong)) saturate(180%);
  --glass-lift: 0 1px 0 var(--glass-highlight) inset, 0 -10px 18px -14px rgba(0,0,0,0.6) inset, 0 10px 30px -8px var(--glass-shadow);
  --glass-lift-hover: 0 1px 0 var(--glass-highlight) inset, 0 -10px 18px -14px rgba(0,0,0,0.6) inset, 0 20px 44px -10px var(--glass-shadow);

  /* --- typography (Fontshare webfonts, system stack fallback) --- */
  --font-sans: "General Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Clash Display", "General Sans", -apple-system, "Segoe UI", sans-serif;
  --text-base: 16px;
  --leading-body: 1.5;
  --fs-logo: 3rem;        /* auth wordmark */
  --fs-logo-sm: 1.35rem;  /* topbar wordmark */
  --fs-title: 1.05rem;    /* card title */
  --fs-body: 1rem;        /* inputs, default */
  --fs-control: 0.95rem;  /* button + tab label */
  --fs-sm: 0.9rem;        /* card desc, comment, hints */
  --fs-xs: 0.85rem;       /* chips, eyebrow, segmented */
  --fs-2xs: 0.8rem;       /* meta rows, counts, tiny buttons */
  --fs-badge: 0.72rem;    /* badge text */
  --fw-semibold: 600;
  --fw-bold: 700;
  --tracking-logo: -0.02em;
  --tracking-title: -0.01em;
  --tracking-eyebrow: 0.08em;

  /* --- radii / spacing / layout --- */
  --radius: 20px;        /* cards, inputs, panels — a soft squircle */
  --radius-sm: 14px;     /* buttons, chips, tabs, segmented */
  --radius-pill: 999px;  /* badges + toast only */
  --pad-panel: 14px;
  --gap-s: 8px;
  --gap-m: 12px;
  --gap-l: 20px;
  --app-max: 640px;
  --app-pad-x: 16px;
  --tap-min: 44px;
  /* .topbar is position:sticky/top:0; jump targets below need scroll-margin
     at least this tall so scrollIntoView({block:"start"}) doesn't land
     content half-clipped under the header. Generous vs. the topbar's
     measured rendered height (~55-73px across viewports) rather than exact,
     since the logo/whoami row can wrap font metrics slightly differently
     per platform. */
  --topbar-h: 84px;

  /* --- motion --- */
  --blur-panel: 24px;
  --blur-panel-strong: 40px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 0.15s;
  --dur-med: 0.28s;

  /* Web-graph edge styles — single source shared by the SVG and the legend
     swatches so the legend can never drift out of sync with the graph. */
  --edge-friend-alpha: 0.65;
  --edge-share-alpha: 0.7;
  --edge-direct-alpha: 0.9;
  --edge-friend-w: 1.25px;
  /* Non-direct "shares" edges get their own hue — a desaturated tint of
     --accent — so the legend's three tiers (friends / shares / direct
     shares) are distinguishable by color, not just by a few px of
     stroke-width (which "shares" vs "friends" previously relied on alone). */
  --edge-share-color: color-mix(in srgb, var(--accent) 45%, var(--text-dim));
  --node-me-fill: color-mix(in srgb, var(--accent) 32%, var(--surface-2));
  --node-stroke-w: 1.75px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: var(--text-base)/var(--leading-body) var(--font-sans);
  padding-bottom: env(safe-area-inset-bottom);
  min-height: 100vh;
}

/* Ambient glow layer — soft blurred color fields behind the UI so frosted
   glass panels have something to actually blur. Fixed, never scrolls,
   never intercepts clicks (div.glass-glow is body's first child). */
.glass-glow {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
}
.glass-glow::before, .glass-glow::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(80px);
}
.glass-glow::before { width: 46vw; height: 46vw; top: -12vw; left: -6vw; background: color-mix(in srgb, var(--accent) 68%, transparent); opacity: 0.6; }
.glass-glow::after { width: 40vw; height: 40vw; bottom: -14vw; right: -6vw; background: color-mix(in srgb, var(--accent-fg) 62%, transparent); opacity: 0.46; }

#app { max-width: var(--app-max); margin: 0 auto; padding: 0 var(--app-pad-x) 48px; position: relative; }

.logo {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-logo);
  font-size: var(--fs-logo);
  margin: 0;
}
.logo.small { font-size: var(--fs-logo-sm); }
.tagline { color: var(--text-dim); margin-top: 4px; }
.spacer { flex: 1; }
.hint { color: var(--text-dim); font-size: var(--fs-sm); }

/* Tab-switch entrance — content fades up when the active tab changes. */
@keyframes view-fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
.view-anim { animation: view-fade var(--dur-med) var(--ease-out); }

/* --- auth --- */
.auth-wrap { padding-top: 18vh; text-align: center; }
.auth-form { display: flex; flex-direction: column; gap: 10px; margin-top: 28px; }

/* Static boot state (index.html): shows the wordmark while the session check
   runs, so the first paint is never a blank page. renderAuth/renderApp
   replace it wholesale via replaceChildren. */
.boot-splash .logo { animation: boot-pulse 1.8s ease-in-out infinite; }
@keyframes boot-pulse { 50% { opacity: 0.55; } }

/* --- top bar (full-bleed glass strip) --- */
.topbar {
  display: flex; align-items: center; gap: var(--gap-m);
  padding: 14px var(--app-pad-x);
  margin: 0 calc(-1 * var(--app-pad-x)) 4px;
  position: sticky; top: 0;
  background: var(--glass-sheen), var(--glass-panel-opaque);
  backdrop-filter: var(--glass-filter-strong);
  -webkit-backdrop-filter: var(--glass-filter-strong);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 1px 0 var(--glass-highlight) inset;
  z-index: 5;
}
.whoami { color: var(--text-dim); font-size: var(--fs-sm); }

/* --- inputs & buttons --- */
input {
  background: var(--glass-sheen), var(--glass-panel-2);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius);
  color: var(--text);
  padding: 12px 14px;
  font-size: var(--fs-body);
  font-family: var(--font-sans);
  width: 100%;
  box-shadow: 0 1px 0 var(--glass-highlight) inset;
  /* No outline-color transition: it would briefly paint a text-colored ring. */
  transition: box-shadow var(--dur-med) var(--ease-out), border-color var(--dur-fast);
}
/* Focus rings use --accent-fg (the stroke-on-dark-surfaces tint): the solid
   --accent fill token samples under 3:1 against glow-lit glass (WCAG 1.4.11);
   --accent-fg clears it at ~4.3-4.7:1 everywhere. */
input:focus {
  outline: 2px solid var(--accent-fg); outline-offset: -1px; border-color: transparent;
  box-shadow: 0 1px 0 var(--glass-highlight) inset, 0 0 0 4px color-mix(in srgb, var(--accent-fg) 30%, transparent);
}
/* Placeholders are the only visible field labels (aria-label carries the
   programmatic name), so they must meet 4.5:1 — the UA default (#757575) is
   only 3.77:1. opacity:1 defeats Firefox's default dimming. */
::placeholder { color: var(--text-dim); opacity: 1; }
/* One focus language everywhere: buttons, links, disclosure summaries and
   chips get the same accent ring text inputs already have (keyboard-only,
   via :focus-visible). */
button:focus-visible, a:focus-visible, summary:focus-visible, .chip:focus-within { outline: 2px solid var(--accent-fg); outline-offset: 2px; }
.chip input:focus-visible { outline: none; }

button {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 12px 18px; font-size: var(--fs-control); font-weight: var(--fw-semibold);
  font-family: var(--font-sans);
  cursor: pointer; color: var(--text);
  background: var(--glass-sheen), var(--glass-panel-2);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  box-shadow: 0 1px 0 var(--glass-highlight) inset, 0 6px 16px -8px var(--glass-shadow);
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast),
    transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast);
}
@media (hover: hover) {
  button:hover:not(:disabled) { transform: translateY(-1px); }
}
button:active:not(:disabled) { transform: scale(0.96); }
button.primary {
  background: var(--glass-sheen), var(--accent);
  color: var(--on-accent);
  border: 1px solid color-mix(in srgb, white 24%, transparent);
  box-shadow: 0 1px 0 rgba(255,255,255,0.3) inset, 0 5px 16px -6px color-mix(in srgb, var(--accent) 40%, transparent);
}
button.primary:hover:not(:disabled) {
  background: var(--glass-sheen), var(--accent-bg-hover);
  box-shadow: 0 1px 0 rgba(255,255,255,0.35) inset, 0 8px 22px -6px color-mix(in srgb, var(--accent) 55%, transparent);
}
button.ghost {
  background: transparent; color: var(--text-dim); border-color: transparent;
  backdrop-filter: none; -webkit-backdrop-filter: none; box-shadow: none;
}
button.ghost:hover:not(:disabled) { color: var(--text); background: var(--glass-highlight); }
/* The "Why?" disclosure uses aria-expanded (not aria-pressed like the
   segmented sort/chip toggles), so it needs its own visual "on" state to
   match — otherwise a sighted mouse user gets no feedback that the button
   they just clicked is open, only the panel appearing below it. Scoped to
   .ghost.tiny since it's currently the app's only aria-expanded control. */
button.ghost.tiny[aria-expanded="true"] {
  color: var(--accent-fg); border-color: var(--accent); background: var(--glass-highlight);
}
button.tiny { padding: 6px 10px; font-size: var(--fs-2xs); border-radius: var(--radius-sm); min-height: var(--tap-min); }
button.danger {
  background: transparent; color: var(--danger); border-color: transparent;
  backdrop-filter: none; -webkit-backdrop-filter: none; box-shadow: none;
}
button.danger:hover:not(:disabled) { background: color-mix(in srgb, var(--danger) 16%, transparent); }
button:disabled { opacity: 0.6; cursor: default; }

/* Inline destructive confirm (replaces window.confirm). */
.confirm-inline {
  display: inline-flex; align-items: center; gap: 6px; flex-wrap: wrap;
  color: var(--text-dim); font-size: var(--fs-2xs);
}

/* Inline form errors — persistent, adjacent to the offending form. */
.form-error { color: var(--danger); font-size: var(--fs-sm); margin: 0; }
.form-error:empty { display: none; }

/* --- glass panel (composer, audience, web card share one surface recipe) --- */
.composer, .audience, .web-wrap {
  background: var(--glass-sheen), var(--glass-panel);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--glass-lift);
}

/* --- composer --- */
.composer {
  padding: var(--pad-panel);
  display: flex; flex-direction: column; gap: var(--gap-s);
  margin: var(--gap-m) 0 var(--gap-l);
}
.composer-row { display: flex; gap: var(--gap-s); }
.composer-row input { flex: 1; }
.recipients summary { color: var(--text-dim); cursor: pointer; font-size: var(--fs-sm); padding: 4px 2px; }
.chips { display: flex; flex-wrap: wrap; gap: var(--gap-s); padding: var(--gap-s) 0; }

/* One glass pill component for label-chips (checkbox pickers) and button-chips. */
.chip, .chip-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--glass-sheen), var(--glass-panel-2);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 6px 12px; font-size: var(--fs-xs);
  cursor: pointer; color: var(--text);
  min-height: var(--tap-min); /* touch target */
  box-shadow: 0 1px 0 var(--glass-highlight) inset;
  transition: border-color var(--dur-fast), color var(--dur-fast),
    box-shadow var(--dur-med) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.chip input { width: auto; }
@media (hover: hover) {
  .chip:hover, .chip-btn:hover:not([aria-pressed="true"]) { border-color: var(--glass-border-strong); transform: translateY(-1px); }
}
.chip:has(input:checked), .chip-btn[aria-pressed="true"] { border-color: var(--accent); color: var(--accent-fg); }
.chip:has(input:disabled) { opacity: 0.6; cursor: default; }

.direct-only { display: flex; align-items: center; gap: var(--gap-s); color: var(--text-dim); font-size: var(--fs-xs); }
.direct-only input { width: auto; }

/* Custom checkbox — every other control (segmented toggle, tabs, chips,
   badges) is fully re-skinned in the glass aesthetic; a raw native checkbox
   (flat white square, OS chrome) reads as an unfinished control next to them.
   appearance:none clears the OS box, the glass fill/border match .chip's
   unchecked state, and :checked swaps to a solid accent fill + drawn
   checkmark — same visual language as .segmented .seg.active / button.primary. */
input[type="checkbox"] {
  appearance: none; -webkit-appearance: none;
  width: 20px; height: 20px; flex: none; padding: 0;
  margin: 0; position: relative;
  border-radius: 6px;
  border: 1px solid var(--glass-border-strong);
  background: var(--glass-panel-2);
  backdrop-filter: none; -webkit-backdrop-filter: none;
  box-shadow: 0 1px 0 var(--glass-highlight) inset;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast);
}
input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: color-mix(in srgb, white 24%, transparent);
}
input[type="checkbox"]:checked::after {
  content: "";
  position: absolute; left: 6px; top: 2px;
  width: 5px; height: 10px;
  border: solid var(--on-accent);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
input[type="checkbox"]:disabled { opacity: 0.6; cursor: default; }

/* --- tabs (glass track; the active pill gets a blurred fill + hairline) --- */
.tabs { display: flex; gap: 4px; margin-bottom: var(--gap-m); }
.tab {
  background: transparent; color: var(--text-dim);
  border: 1px solid transparent; border-radius: var(--radius-sm);
  padding: 8px 16px; min-height: var(--tap-min); /* touch target */
  backdrop-filter: none; -webkit-backdrop-filter: none; box-shadow: none;
}
.tab:hover:not(.active), .segmented .seg:hover:not(.active) { color: var(--text); }
.tab.active {
  background: var(--glass-sheen), var(--glass-panel-2);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border-color: var(--glass-border-strong); /* >=3:1 selected indicator */
  color: var(--text);
  box-shadow: inset 0 1px 0 var(--glass-highlight);
}

/* --- feed cards (frosted glass, gentle hover lift) --- */
.feed { display: flex; flex-direction: column; gap: var(--gap-m); }
.card {
  background: var(--glass-sheen), var(--glass-panel);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--glass-lift);
  overflow: hidden;
  transition: transform var(--dur-med) var(--ease-out), box-shadow var(--dur-med) var(--ease-out);
}
@media (hover: hover) {
  .card:hover { transform: translateY(-2px); box-shadow: var(--glass-lift-hover); }
}
.thumb {
  width: 100%; max-height: 200px; object-fit: cover; display: block;
  /* OG images are ~1.91:1 but the height cap crops them; anchor the crop to
     the top band where OG cards put their title text (default center slices
     headings mid-glyph), and cap at 200px so multi-line titles survive. */
  object-position: center top;
  background: var(--surface-2);
  filter: brightness(0.92); /* soften white OG images against the dark theme */
}
.card-body { padding: var(--pad-panel); display: flex; flex-direction: column; gap: var(--gap-s); }
.card-title {
  color: var(--text); font-weight: var(--fw-bold); text-decoration: none;
  font-family: var(--font-display); letter-spacing: var(--tracking-title);
  font-size: var(--fs-title);
  transition: color var(--dur-fast);
}
.card-title:hover { color: var(--accent-fg); }
.card-desc { margin: 0; color: var(--text-dim); font-size: var(--fs-sm); }
.card-comment { margin: 0; font-size: var(--fs-sm); font-style: italic; color: var(--text); }
.card-meta {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  color: var(--text-dim); font-size: var(--fs-2xs);
}
.badge {
  background: color-mix(in srgb, var(--accent) 30%, transparent);
  color: var(--badge-text);
  border: 1px solid color-mix(in srgb, white 22%, transparent);
  border-radius: var(--radius-pill); padding: 2px 9px;
  font-size: var(--fs-badge); font-weight: var(--fw-semibold);
  box-shadow: 0 1px 0 var(--glass-highlight-lo) inset;
}
.badge.dim { background: var(--glass-panel-2); color: var(--text-dim); border-color: var(--glass-border); }
.load-more { align-self: center; margin-top: 6px; }

/* --- sponsored cards --------------------------------------------------------
   Same card language as organic shares — the ONLY differentiators are the
   upfront "Sponsored" label, a dashed hairline, and a Hide action.
   Never louder than content; that's the taste contract. */
.card.sponsored { border-style: dashed; border-color: var(--glass-border-strong); }
.sponsored-badge { background: var(--glass-panel-2); color: var(--text-dim); border-color: var(--glass-border); }
.sponsored-cta {
  align-self: flex-start;
  color: var(--accent-fg);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  padding: 6px 0; /* comfortable target without button chrome */
  min-height: 0;
}
.sponsored-cta:hover { text-decoration: underline; }

/* --- linkbacks, why-panel, post view --- */
.card-time { color: var(--text-dim); text-decoration: none; }
.card-time:hover { color: var(--text); text-decoration: underline; }

.why-panel {
  background: var(--glass-panel-2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: var(--gap-m);
  display: flex; flex-direction: column; gap: var(--gap-s);
}
.why-title { margin: 0; font-size: var(--fs-xs); font-weight: var(--fw-semibold); color: var(--text); }
.why-row { display: flex; flex-direction: column; gap: 3px; }
.why-line { display: flex; align-items: center; gap: var(--gap-s); flex-wrap: wrap; }
.why-bar-track {
  flex: 0 0 56px; height: 6px; border-radius: var(--radius-pill);
  background: color-mix(in srgb, white 8%, transparent); overflow: hidden;
}
.why-bar {
  display: block; height: 100%; border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-fg));
}
.why-label { font-size: var(--fs-2xs); color: var(--text); }
.why-label.muted { color: var(--text-dim); text-decoration: line-through; }
.why-evidence { font-size: var(--fs-2xs); color: var(--text-dim); padding-left: calc(56px + var(--gap-s)); }
.why-ev { color: var(--accent-fg); }
.why-ev:hover { text-decoration: underline; }
.why-note { margin: 2px 0 0; font-size: var(--fs-2xs); }

/* The permalink view (/?post=<id>) is often the very first screen a new
   visitor lands on (a shared link) — a single card left stranded at the top
   of an otherwise-empty viewport reads as sparse/unfinished. Centering the
   block vertically in the remaining space keeps it feeling intentional
   without inventing new content for what's still a deliberately minimal view. */
.post-view { display: flex; flex-direction: column; gap: var(--gap-m); margin-top: var(--gap-m); min-height: 50vh; justify-content: center; }
.post-actions { display: flex; align-items: center; gap: var(--gap-s); }
.post-hint { text-align: center; }
.muted-signals { margin-top: var(--gap-m); }
.muted-signals .section-title { margin-top: 0; }

/* --- friends --- */
.add-friend { display: flex; gap: var(--gap-s); margin-bottom: var(--gap-l); }
.friend-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--gap-s); }
.friend-list li {
  display: flex; align-items: center; gap: var(--gap-s); flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px var(--pad-panel);
}

/* Eyebrow section heading — one class, used on every tab. */
.section-title {
  font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: var(--tracking-eyebrow);
  color: var(--text-dim); font-weight: var(--fw-semibold);
  margin: var(--gap-l) 0 var(--gap-s);
}

/* --- segmented control (Latest|For you, Everybody|Only picked) --- */
.segmented {
  display: inline-flex; gap: 2px; padding: 3px;
  background: var(--glass-sheen), var(--glass-panel);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 1px 0 var(--glass-highlight) inset;
}
.segmented .seg {
  background: transparent; color: var(--text-dim);
  border: none; border-radius: calc(var(--radius-sm) - 4px);
  padding: 6px 14px; font-size: var(--fs-xs);
  backdrop-filter: none; -webkit-backdrop-filter: none; box-shadow: none;
  /* 36 + 2×3px container padding + 2×1px border = 44px touch target,
     matching .chip/.chip-btn/.tab — and aligning pill heights in .feed-head. */
  min-height: 36px;
  transition: background var(--dur-med) var(--ease-out), color var(--dur-fast);
}
.segmented .seg.active {
  background: var(--glass-sheen), var(--accent);
  color: var(--on-accent);
  box-shadow: 0 1px 0 rgba(255,255,255,0.3) inset, 0 4px 12px -4px color-mix(in srgb, var(--accent) 50%, transparent);
}
.feed-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 0 0 var(--gap-m); }

/* --- Friends tab "Your feed" audience section --- */
/* scroll-margin-top: scrollToSelector()'s scrollIntoView({block:"start"})
   jumps here from the Feed "· edit" pill; without this the sticky .topbar
   (position:sticky/top:0) clips the top of this panel. */
.audience { padding: var(--pad-panel); margin-bottom: var(--gap-l); scroll-margin-top: var(--topbar-h); }
.audience h2 { margin-top: 0; }
.audience .hint { margin: 4px 0 var(--gap-m); }
.pick-list { display: flex; flex-wrap: wrap; gap: var(--gap-s); margin-top: var(--gap-m); }

/* --- Web tab (share graph) --- */
.web-wrap { padding: var(--pad-panel); }
/* scrollToSelector() jumps here on node select; see .audience's comment
   above for why scroll-margin-top is needed against the sticky .topbar. */
.web-shares { scroll-margin-top: var(--topbar-h); }
.web-svg { width: 100%; max-width: 440px; margin: 0 auto; height: auto; display: block; }
.web-edge-friend { stroke: var(--text-dim); opacity: var(--edge-friend-alpha); stroke-width: var(--edge-friend-w); fill: none; }
.web-edge-share { stroke: var(--edge-share-color); fill: none; opacity: var(--edge-share-alpha); }
.web-edge-share.direct { stroke: var(--accent); opacity: var(--edge-direct-alpha); }
.web-arrow { fill: var(--edge-share-color); }
.web-arrow.direct { fill: var(--accent); }
.web-node { cursor: pointer; }
/* Invisible enlarged hit area behind each node (touch target). */
.web-hit { fill: none; pointer-events: all; }
.web-node .web-dot {
  fill: color-mix(in srgb, var(--accent) 14%, var(--surface-2));
  stroke: var(--text-dim); stroke-width: var(--node-stroke-w);
}
.web-node:hover .web-dot { stroke: var(--accent); }
.web-node.me .web-dot {
  fill: var(--node-me-fill);
  stroke: var(--accent);
}
.web-node.selected .web-dot {
  fill: color-mix(in srgb, var(--accent) 45%, var(--surface-2));
  stroke: var(--accent-fg); stroke-width: 3;
}
.web-node text { fill: var(--text); font-size: 10.5px; font-weight: var(--fw-semibold); }
.web-legend {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 14px;
  color: var(--text-dim); font-size: var(--fs-2xs); margin-top: 10px;
}
.web-legend .key { display: inline-flex; align-items: center; gap: 6px; }
.key-dot {
  display: inline-block; width: 10px; height: 10px; border-radius: 50%;
  background: var(--node-me-fill);
  border: var(--node-stroke-w) solid var(--accent);
}
.key-line { display: inline-block; width: 22px; height: 0; border-top: var(--edge-friend-w) solid var(--text-dim); opacity: var(--edge-friend-alpha); }
.key-line.share { border-top: 3px solid var(--edge-share-color); opacity: var(--edge-share-alpha); }
.key-line.direct { border-top: 3px solid var(--accent); opacity: var(--edge-direct-alpha); }
.web-caption { text-align: center; margin: var(--gap-s) 0 0; font-size: var(--fs-2xs); }
.web-chips { display: flex; flex-wrap: wrap; gap: var(--gap-s); margin-top: var(--gap-m); }
.chip-count { color: var(--text-dim); font-size: var(--fs-2xs); }
.chip-btn[aria-pressed="true"] .chip-count { color: inherit; }

/* Screen-reader-only text (the SVG graph's accessible alternative). */
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap;
}

/* --- empty & toasts --- */
.empty { text-align: center; padding: 48px 12px; color: var(--text-dim); }
.toast {
  position: fixed; left: 50%; bottom: 28px;
  transform: translateX(-50%) translateY(16px) scale(0.96);
  background: var(--glass-sheen), var(--glass-panel-2);
  backdrop-filter: var(--glass-filter-strong);
  -webkit-backdrop-filter: var(--glass-filter-strong);
  border: 1px solid var(--glass-border-strong);
  color: var(--text); padding: 10px 18px; border-radius: var(--radius-pill);
  font-size: var(--fs-sm); opacity: 0; pointer-events: none;
  box-shadow: var(--glass-lift);
  transition: opacity var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out);
  max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
.toast.show.error { border-color: var(--danger); color: var(--danger); }

@media (prefers-reduced-motion: reduce) {
  .toast { transition: opacity 0.25s; transform: translateX(-50%); }
  .toast.show { transform: translateX(-50%); }
  .boot-splash .logo { animation: none; }
  .view-anim { animation: none; }
  .card, .chip, .chip-btn, button { transition: none; }
  .card:hover, .chip:hover, .chip-btn:hover, button:hover:not(:disabled), button:active:not(:disabled) { transform: none; }
}