:root {
  --bg: #0F0E13;
  --bg-2: #1A1520;
  --surface: rgba(28, 24, 32, 0.85);
  --surface-hi: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.07);
  --border-hi: rgba(255, 255, 255, 0.14);
  --text: #F5F1EB;
  --text-muted: #8A8288;
  --accent: #F4A574;
  --accent-soft: rgba(244, 165, 116, 0.15);
  --accent-border: rgba(244, 165, 116, 0.32);
  --accent-fg: #1a0a00;
  --nsfw: #9B2C3C;
  --success: #8FBC8F;
  --warn: #F59E0B;

  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --radius-pill: 999px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-head: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Telegram auto-injects these on :root (Bot API 8.0+):
       --tg-safe-area-inset-top/bottom/left/right       — OS notch / home-indicator
       --tg-content-safe-area-inset-top/bottom/left/right — Telegram chrome (close btn, etc.)
     They are ADDITIVE — the content area must clear both combined.
     Fallback to OS env() for browsers / pre-8.0 clients. */
  --safe-top: calc(
    var(--tg-safe-area-inset-top, env(safe-area-inset-top, 0px)) +
    var(--tg-content-safe-area-inset-top, 0px)
  );
  --safe-bottom: calc(
    var(--tg-safe-area-inset-bottom, env(safe-area-inset-bottom, 0px)) +
    var(--tg-content-safe-area-inset-bottom, 0px)
  );
  --safe-left: calc(
    var(--tg-safe-area-inset-left, env(safe-area-inset-left, 0px)) +
    var(--tg-content-safe-area-inset-left, 0px)
  );
  --safe-right: calc(
    var(--tg-safe-area-inset-right, env(safe-area-inset-right, 0px)) +
    var(--tg-content-safe-area-inset-right, 0px)
  );
  /* Telegram also injects --tg-viewport-stable-height when available. */
  --viewport-h: var(--tg-viewport-stable-height, 100dvh);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px; line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overscroll-behavior: none;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  overscroll-behavior-y: contain;
}

button {
  border: 0; background: transparent; color: inherit;
  font-family: inherit; font-size: inherit;
  cursor: pointer; padding: 0;
}

input, textarea {
  font-family: inherit; color: var(--text);
  background: transparent; border: 0; outline: none;
}

/* ---- App layout ---- */

#app {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  padding-top: var(--safe-top);
}

.screen {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  background: var(--bg);
  transition: opacity 200ms ease, transform 240ms ease;
}

.screen.entering { opacity: 0; transform: translateY(12px); }
.screen.leaving { opacity: 0; transform: translateY(-12px); pointer-events: none; }

/* ---- Top bar ---- */

.topbar {
  display: flex; align-items: center; gap: var(--space-2);
  padding:
    calc(var(--safe-top) + var(--space-3))
    calc(var(--safe-right) + var(--space-4))
    var(--space-3)
    calc(var(--safe-left) + var(--space-4));
  min-height: calc(56px + var(--safe-top));
  flex: 0 0 auto;
}

.topbar-title {
  font-family: var(--font-head); font-weight: 800;
  font-size: 22px; letter-spacing: -0.02em;
  flex: 1;
}

.token-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px 6px 8px;
  background: var(--accent-soft); border: 1px solid var(--accent-border);
  border-radius: var(--radius-pill);
  color: var(--text); font-weight: 700; font-size: 13px;
  cursor: pointer;
  transition: transform 120ms;
}
.token-chip:active { transform: scale(0.95); }
.token-chip .dot {
  width: 16px; height: 16px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #F9D1A5, var(--accent));
  box-shadow: 0 0 6px rgba(244, 165, 116, 0.5);
}

.icon-btn {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--surface-hi);
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform 120ms, background 150ms;
}
.icon-btn:active { transform: scale(0.9); }
.icon-btn svg { width: 20px; height: 20px; stroke: var(--text); fill: none; stroke-width: 2; }

/* ---- Character picker ---- */

.picker {
  flex: 1; overflow-y: auto;
  padding:
    0
    calc(var(--safe-right) + var(--space-4))
    calc(var(--space-6) + var(--safe-bottom))
    calc(var(--safe-left) + var(--space-4));
  scrollbar-width: none;
}
.picker::-webkit-scrollbar { display: none; }

.picker-heading {
  margin: var(--space-3) 0 var(--space-4);
}
.picker-title {
  font-family: var(--font-head); font-weight: 800;
  font-size: 28px; letter-spacing: -0.025em; line-height: 1.1;
}
.picker-sub {
  color: var(--text-muted); font-size: 13px;
  margin-top: 4px;
}

.card-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3);
}

.card-char {
  position: relative; overflow: hidden;
  background:
    radial-gradient(circle at 50% 40%, var(--char-glow-soft) 0%, transparent 70%),
    linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.015));
  border: 1px solid var(--border);
  border-radius: 22px;
  aspect-ratio: 3 / 4;
  display: flex; flex-direction: column;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms;
  padding: 0; text-align: left;
}
.card-char::before {
  content: ''; position: absolute; inset: -1px; border-radius: inherit;
  background: linear-gradient(135deg, var(--char-accent) 0%, transparent 40%);
  opacity: 0; transition: opacity 200ms;
  pointer-events: none;
  mask: linear-gradient(#000,#000) content-box,linear-gradient(#000,#000);
  mask-composite: exclude;
  padding: 1px;
}
.card-char:hover::before { opacity: 0.4; }
.card-char:active { transform: scale(0.975); }
.card-char:hover { border-color: var(--border-hi); }

.card-bust-wrap {
  position: relative;
  flex: 1 1 auto;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to bottom, #000 60%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 60%, transparent 100%);
}

.card-portrait {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
  /* Accent-colored duotone vibe so 4 identical VRM shots at least feel
     distinct until each character has its own pre-rendered portrait. */
  filter: contrast(1.02) saturate(1.05);
}

.card-info {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 10px 14px 12px;
  background: linear-gradient(to top, rgba(15,14,19,0.92) 40%, transparent);
  z-index: 2;
}
.card-row {
  display: flex; align-items: baseline; gap: 8px;
}
.card-name {
  font-family: var(--font-head); font-weight: 700;
  font-size: 17px; letter-spacing: -0.015em;
  color: var(--text);
}
.card-age {
  color: var(--text-muted); font-size: 12px; font-weight: 500;
}
.card-tag {
  color: var(--char-accent); font-size: 11px;
  font-weight: 600; letter-spacing: 0.02em;
  margin-top: 2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.online-dot {
  position: absolute; top: 10px; right: 10px;
  display: flex; align-items: center; gap: 4px;
  padding: 3px 8px 3px 6px; border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, 0.5); backdrop-filter: blur(6px);
  font-size: 10px; font-weight: 600;
}
.online-dot::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: #4ADE80;
}

/* ---- Chat screen (threejs-style layered layout) ---- */

.chat-screen { background: var(--bg); }

.chat-glow {
  /* Glow anchored to the TOP of the screen by an absolute pixel offset —
     doesn't move when the keyboard pushes the canvas bottom up. */
  position: fixed; z-index: 0;
  top: calc(var(--safe-top) + 240px);
  left: 50%;
  width: 260px; height: 300px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--char-accent, var(--accent));
  filter: blur(85px);
  opacity: 0.55;
  pointer-events: none;
  transition: opacity 400ms, background 400ms;
}

.chat-canvas {
  /* Natural resize — canvas shrinks when keyboard opens. Model pixel size
     stays stable because the camera's horizontal half-extent is LOCKED
     in JS (see chat.ts resize handler) — only vertical view extent adjusts
     to the aspect ratio, which crops top/bottom without stretching. */
  position: fixed; z-index: 1;
  top: calc(var(--safe-top) + 52px);
  bottom: 0;
  left: var(--safe-left); right: var(--safe-right);
  pointer-events: auto;
  touch-action: none;
}
.chat-canvas canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.vrm-loader {
  position: absolute; inset: 0; z-index: 3;
  display: flex; flex-direction: column; gap: 18px;
  align-items: center; justify-content: center;
  background: radial-gradient(ellipse at 50% 40%, var(--char-glow, transparent), transparent 65%);
  transition: opacity 300ms ease;
  pointer-events: none;
}
.vrm-loader.fade-out { opacity: 0; }
.vrm-loader.failed { gap: 14px; pointer-events: auto; }
.vrm-retry {
  margin-top: 6px;
  pointer-events: auto;
}
.vrm-spinner {
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.08);
  border-top-color: var(--char-accent, var(--accent));
  animation: vrm-spin 0.9s cubic-bezier(.65,.15,.35,.85) infinite;
  box-shadow: 0 0 24px var(--char-glow-soft, var(--accent-soft));
}
@keyframes vrm-spin {
  to { transform: rotate(360deg); }
}
.vrm-loader-text {
  font-family: var(--font-body);
  font-size: 14px; font-weight: 500;
  color: var(--text-muted); letter-spacing: 0.02em;
}

.chat-fade {
  position: fixed; z-index: 2;
  left: 0; right: 0;
  top: 55dvh; bottom: 0;
  background: linear-gradient(to bottom, transparent 0%, var(--bg) 55%);
  pointer-events: none;
}

.chat-topbar {
  /* Sit in the middle strip between Telegram's close (top-left) and
     collapse (top-right) buttons — only OS notch pads us, not Telegram chrome. */
  position: fixed; z-index: 10;
  top: calc(var(--tg-safe-area-inset-top, env(safe-area-inset-top, 0px)) + 6px);
  left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  gap: 4px;
  pointer-events: none; /* children re-enable — avoid blocking the canvas */
  max-width: 60%;
}
.chat-topbar .token-chip,
.chat-topbar .mode-pill,
.chat-topbar .mute-pill {
  pointer-events: auto;
  padding: 4px 10px 4px 6px; font-size: 12px; font-weight: 700;
  background: rgba(28, 24, 32, 0.65);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
}

.mute-pill {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 26px; padding: 0;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background 240ms, color 240ms, transform 120ms;
}
.mute-pill:active { transform: scale(0.9); }
.mute-pill svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 2.2; }
.mute-pill.on { color: var(--text); }
.mute-pill.off { color: var(--text-muted); background: rgba(255, 255, 255, 0.04); }
.chat-topbar .token-chip .dot { width: 14px; height: 14px; }

.chat-topbar .chip-row {
  display: inline-flex; gap: 6px; align-items: center;
  pointer-events: auto;
}

.mode-pill {
  display: inline-flex; align-items: center; gap: 5px;
  border-radius: var(--radius-pill);
  cursor: pointer; user-select: none;
  transition: background 240ms, border-color 240ms, color 240ms, transform 120ms;
  letter-spacing: 0.04em;
}
.mode-pill:active { transform: scale(0.93); }
.mode-pill svg { width: 13px; height: 13px; stroke: currentColor; fill: none; stroke-width: 2.2; }

.mode-pill.locked {
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
}
.mode-pill.off {
  color: var(--text);
  background: rgba(28, 24, 32, 0.65);
}
.mode-pill.on {
  color: #FFCDD2;
  background: rgba(155, 44, 60, 0.45);
  border-color: rgba(220, 80, 100, 0.6);
  box-shadow: 0 0 16px rgba(155, 44, 60, 0.45);
}

.chat-topbar .char-name {
  font-family: var(--font-head); font-weight: 700;
  font-size: 15px; letter-spacing: -0.01em;
  text-align: center; line-height: 1.1;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.6);
  pointer-events: auto;
}
.chat-topbar .char-name small {
  display: block;
  font-family: var(--font-body); font-weight: 500;
  color: var(--text-muted); font-size: 10px; margin-top: 1px;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
}

.chat-bottom {
  position: fixed; z-index: 10;
  left: 0; right: 0; bottom: 0;
  padding:
    0
    calc(var(--safe-right) + var(--space-4))
    calc(var(--space-3) + var(--safe-bottom))
    calc(var(--safe-left) + var(--space-4));
  display: flex; flex-direction: column;
  pointer-events: none;
}

.chat-log {
  max-height: 34dvh;
  overflow-y: auto;
  margin-bottom: var(--space-2);
  display: flex; flex-direction: column; gap: var(--space-2);
  pointer-events: auto;
  scrollbar-width: none;
}
.chat-log::-webkit-scrollbar { display: none; }
.chat-log.overflowing {
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 15%);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 15%);
}

.msg {
  max-width: 100%;
  padding: 11px 16px; border-radius: 16px;
  font-size: 15px; line-height: 1.4;
  word-wrap: break-word;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: opacity 300ms;
}
.msg.user {
  align-self: flex-end;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border);
  color: var(--text);
  max-width: 88%;
  border-bottom-right-radius: 6px;
}
.msg.user.faded { opacity: 0.35; }

.msg.model {
  align-self: stretch;
  background: rgba(28, 24, 32, 0.62);
  border: 1px solid var(--char-accent, var(--accent-border));
  font-size: 16px; line-height: 1.45;
}

.input-bar {
  display: flex; align-items: center; gap: var(--space-2);
  pointer-events: auto;
}
.input-bar input {
  flex: 1; height: 46px; padding: 0 18px;
  background: rgba(28, 24, 32, 0.75);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 15px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.input-bar input:focus { border-color: var(--char-accent, var(--accent-border)); }
.input-bar input::placeholder { color: var(--text-muted); }
.input-bar .send-btn {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--char-accent, var(--accent)); color: var(--accent-fg);
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform 120ms, opacity 120ms;
  box-shadow: 0 6px 20px var(--char-glow-soft);
}
.input-bar .send-btn:disabled {
  opacity: 0.35; cursor: default;
  box-shadow: none;
}
.input-bar .send-btn:not(:disabled):active { transform: scale(0.9); }
.input-bar .send-btn svg {
  width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2.5;
}

.cost-hint {
  text-align: center; font-size: 10px;
  color: var(--text-muted); letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
  pointer-events: none;
}

/* ---- Tag chip used in chat model bubble when emotion is active ---- */
.tag-chip {
  display: inline-block;
  padding: 2px 8px; border-radius: 999px;
  background: var(--accent-soft); border: 1px solid var(--accent-border);
  font-size: 10px; font-weight: 600; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--accent);
  margin-right: 6px;
}

/* ---- Bottom sheet ---- */

.sheet-backdrop {
  position: fixed; inset: 0; background: rgba(5, 4, 10, 0.6);
  backdrop-filter: blur(8px);
  opacity: 0; transition: opacity 180ms;
  z-index: 100;
}
.sheet-backdrop.open { opacity: 1; }

.sheet {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--bg-2); border-top-left-radius: 24px; border-top-right-radius: 24px;
  padding:
    var(--space-5)
    calc(var(--safe-right) + var(--space-4))
    calc(var(--space-5) + var(--safe-bottom))
    calc(var(--safe-left) + var(--space-4));
  transform: translateY(100%); transition: transform 220ms cubic-bezier(0.2, 0.8, 0.3, 1);
  z-index: 101;
  max-height: 80vh; overflow-y: auto;
}
.sheet.open { transform: translateY(0); }
.sheet-handle {
  width: 40px; height: 4px; border-radius: 2px;
  background: var(--border-hi); margin: 0 auto var(--space-4);
}
.sheet-title {
  font-family: var(--font-head); font-weight: 700; font-size: 20px;
  letter-spacing: -0.01em; margin-bottom: var(--space-2);
}
.sheet-body { color: var(--text-muted); font-size: 14px; line-height: 1.5; }

/* ---- Buttons ---- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 12px 18px; border-radius: var(--radius-md);
  font-weight: 700; font-size: 14px;
  transition: transform 120ms, opacity 120ms;
  min-height: 44px;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: var(--accent-fg); }
.btn-secondary {
  background: var(--surface-hi); color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-full { width: 100%; }

/* ---- Toast ---- */

.toast-wrap {
  position: fixed; top: calc(var(--safe-top) + 56px); left: 0; right: 0;
  display: flex; flex-direction: column; align-items: center;
  gap: 8px; pointer-events: none; z-index: 200;
}
.toast {
  background: var(--surface); border: 1px solid var(--border);
  padding: 10px 18px; border-radius: var(--radius-pill);
  backdrop-filter: blur(10px);
  font-size: 13px; font-weight: 600;
  transform: translateY(-8px); opacity: 0;
  transition: transform 220ms, opacity 220ms;
  pointer-events: auto;
  max-width: 85vw; text-align: center;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.error {
  background: rgba(155, 44, 60, 0.22);
  border-color: rgba(155, 44, 60, 0.5);
  color: #FFC7CD;
}

/* ---- Invite ---- */

.invite-link {
  display: flex; gap: var(--space-2); align-items: center;
  background: var(--surface); border: 1px solid var(--border);
  padding: 12px 14px; border-radius: var(--radius-md);
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 13px; color: var(--text);
  overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
}

.progress-dots {
  display: inline-flex; gap: 6px; align-items: center;
}
.progress-dots .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border-hi);
}
.progress-dots .dot.on { background: var(--accent); }

.badge-unlocked {
  font-size: 10px; font-weight: 800; letter-spacing: 0.06em;
  padding: 3px 8px; border-radius: var(--radius-pill);
  background: rgba(143, 188, 143, 0.18);
  border: 1px solid rgba(143, 188, 143, 0.4);
  color: var(--success);
  text-transform: uppercase;
}

.invite-list {
  display: flex; flex-direction: column; gap: 8px;
}
.invitee-row {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.invitee-row.credited {
  border-color: rgba(143, 188, 143, 0.35);
  background: rgba(143, 188, 143, 0.08);
}
.invitee-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), rgba(244, 165, 116, 0.5));
  color: var(--accent-fg); font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.invitee-body { flex: 1; min-width: 0; }
.invitee-name {
  font-family: var(--font-head); font-weight: 700;
  font-size: 14px; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.invitee-status {
  font-size: 11px; color: var(--text-muted); margin-top: 2px;
}
.invitee-check {
  color: var(--success); font-size: 20px; font-weight: 900;
  padding-right: 4px;
}
.invitee-bar {
  width: 52px; height: 5px; border-radius: 999px;
  background: var(--border-hi); overflow: hidden;
  flex-shrink: 0;
}
.invitee-bar-fill {
  height: 100%; background: var(--accent);
  transition: width 300ms;
}

.icon-btn.spinning svg { animation: icon-spin 600ms cubic-bezier(.4,0,.2,1); }
@keyframes icon-spin {
  from { transform: rotate(0); }
  to { transform: rotate(360deg); }
}

/* ---- Utility ---- */

.stack { display: flex; flex-direction: column; }
.stack > * + * { margin-top: var(--space-3); }
.row { display: flex; align-items: center; gap: var(--space-2); }
.hidden { display: none !important; }
.spacer { flex: 1; }
.muted { color: var(--text-muted); }
.small { font-size: 12px; }