/* ============================================================
   SIGNA — components.css · buttons, cards, badges, rings, etc.
   ============================================================ */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: 12px 24px; border-radius: var(--radius-md);
  font-weight: 600; font-size: 16px; line-height: 1.2;
  border: 1px solid transparent; min-height: 48px;
  transition: background var(--dur) var(--ease-out), transform 100ms var(--ease-out),
              border-color var(--dur), color var(--dur), box-shadow var(--dur);
  text-decoration: none; user-select: none; -webkit-tap-highlight-color: transparent;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(0.98); }
.btn svg { width: 19px; height: 19px; flex: none; }
.btn-primary { background: var(--accent); color: var(--on-accent); box-shadow: 0 6px 20px var(--glow); }
.btn-primary:hover { background: var(--accent-hover); transform: scale(1.02); }
.btn-primary:active { transform: scale(0.98); }
.btn-secondary { background: transparent; border-color: var(--accent); color: var(--accent); }
.btn-secondary:hover { background: var(--accent-soft); }
.btn-teal { background: var(--accent-2); color: var(--on-accent-2); }
.btn-teal:hover { background: var(--accent-2-hover); transform: scale(1.02); }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--surface-elevated); color: var(--text-primary); }
.btn-danger { background: var(--error-soft); color: var(--error); border-color: rgba(255, 75, 75, 0.42); }
.btn-danger:hover { background: var(--error); color: #fff; }
.btn-sm { padding: 8px 16px; font-size: 14px; min-height: 40px; border-radius: 10px; }
.btn-sm svg { width: 16px; height: 16px; }
.btn-lg { padding: 15px 32px; font-size: 17px; min-height: 56px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.45; pointer-events: none; }
.btn.is-loading { pointer-events: none; opacity: 0.8; }

.icon-btn {
  display: inline-grid; place-items: center; width: 44px; height: 44px;
  border-radius: var(--radius-md); color: var(--text-secondary);
  transition: background var(--dur), color var(--dur), transform 100ms;
}
.icon-btn:hover { background: var(--surface-elevated); color: var(--text-primary); }
.icon-btn:active { transform: scale(0.94); }
.icon-btn svg { width: 21px; height: 21px; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: var(--space-6);
  box-shadow: var(--shadow);
}
.card-hover { transition: transform 200ms var(--ease-out), border-color 200ms var(--ease-out); }
.card-hover:hover { transform: translateY(-2px); border-color: var(--accent-border); }
.card-pad-sm { padding: var(--space-4); }
.card-elevated { background: var(--surface-elevated); }

/* ---------- Badges / chips / dots ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: var(--radius-sm);
  font-size: 12px; font-weight: 600; line-height: 1.4; white-space: nowrap;
}
.badge svg { width: 13px; height: 13px; }
.badge-mastered { background: var(--success-soft); color: var(--success); }
.badge-learning { background: var(--warning-soft); color: var(--warning); }
.badge-new { background: var(--surface-elevated); color: var(--text-secondary); }
.badge-locked { background: var(--surface-elevated); color: var(--text-muted); }
.badge-accent { background: var(--accent-soft); color: var(--accent); }
html[data-theme="light"] .badge-accent { color: var(--accent); }
.badge-teal { background: var(--accent-2-soft); color: var(--accent-2); }

.status-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.status-dot.mastered { background: var(--success); box-shadow: 0 0 0 3px var(--success-soft); }
.status-dot.learning { background: var(--warning); box-shadow: 0 0 0 3px var(--warning-soft); }
.status-dot.new { background: var(--text-muted); opacity: 0.55; }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: var(--radius-full);
  border: 1px solid var(--border); background: var(--surface);
  font-size: 14px; font-weight: 500; color: var(--text-secondary);
  transition: all var(--dur); min-height: 40px;
}
.chip:hover { border-color: var(--accent-border); color: var(--text-primary); }
.chip.is-active { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.chip svg { width: 15px; height: 15px; }

/* ---------- Progress bars & meters ---------- */
.progress-bar { height: 10px; border-radius: var(--radius-full); background: var(--surface-elevated); overflow: hidden; }
.progress-bar__fill {
  height: 100%; border-radius: var(--radius-full); background: var(--accent);
  transition: width 600ms var(--ease-inout);
}
.progress-bar__fill.teal { background: var(--accent-2); }
.progress-bar__fill.success { background: var(--success); }
.progress-bar__fill.warning { background: var(--warning); }

.meter { display: grid; grid-template-columns: 118px 1fr 52px; align-items: center; gap: var(--space-3); font-size: 13px; }
.text-label svg { width: 14px; height: 14px; vertical-align: -2px; display: inline-block; }
h2 > svg, h3 > svg, h4 > svg { vertical-align: -4px; }
.meter__track { height: 8px; border-radius: var(--radius-full); background: var(--surface-elevated); overflow: hidden; }
.meter__fill { height: 100%; border-radius: var(--radius-full); background: var(--accent); transition: width 180ms var(--ease-out), background 180ms; }
.meter__val { font-family: var(--font-mono); font-weight: 700; font-size: 12px; text-align: right; color: var(--text-secondary); }

/* ---------- Score ring ---------- */
.score-ring { position: relative; width: 132px; height: 132px; flex: none; }
.score-ring svg { transform: rotate(-90deg); }
.score-ring__track { stroke: var(--border); }
.score-ring__fill {
  stroke: var(--accent); stroke-linecap: round;
  transition: stroke-dashoffset 240ms var(--ease-out), stroke 240ms;
  filter: drop-shadow(0 0 6px rgba(88, 204, 2, 0.45));
}
.score-ring__center {
  position: absolute; inset: 0; display: grid; place-content: center; text-align: center;
}
.score-ring__value { font-family: var(--font-mono); font-weight: 700; font-size: 30px; line-height: 1; }
.score-ring__label { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); margin-top: 3px; }
.score-ring.sm { width: 92px; height: 92px; }
.score-ring.sm .score-ring__value { font-size: 21px; }

/* ---------- Feedback bar ---------- */
.feedback-bar {
  display: flex; align-items: center; gap: var(--space-3);
  background: var(--surface-elevated); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: var(--radius-md);
  padding: 12px 16px; font-size: 15px; font-weight: 500; min-height: 52px;
}
.feedback-bar svg { width: 20px; height: 20px; flex: none; color: var(--accent); }
.feedback-bar.is-good { border-left-color: var(--success); }
.feedback-bar.is-good svg { color: var(--success); }
.feedback-bar.is-warn { border-left-color: var(--warning); }
.feedback-bar.is-warn svg { color: var(--warning); }

/* ---------- Stars ---------- */
.stars { display: inline-flex; gap: 4px; color: var(--surface-elevated); }
.stars svg { width: 26px; height: 26px; }
.stars.sm svg { width: 16px; height: 16px; }
.stars .is-on { color: var(--warning); }
.stars .is-on svg { fill: var(--warning); }

/* ---------- Step indicator ---------- */
.step-indicator { display: flex; align-items: center; gap: 0; }
.step-indicator__dot {
  width: 30px; height: 30px; border-radius: 50%; flex: none;
  display: grid; place-items: center;
  border: 2px solid var(--border); background: var(--surface);
  font-size: 12px; font-weight: 700; color: var(--text-muted);
  transition: all var(--dur);
}
.step-indicator__dot svg { width: 14px; height: 14px; }
.step-indicator__dot.is-current { border-color: var(--accent); background: var(--accent); color: var(--on-accent); }
.step-indicator__dot.is-done { border-color: var(--success); background: var(--success); color: #fff; }
.step-indicator__line { height: 2px; width: 44px; background: var(--border); }
.step-indicator__line.is-done { background: var(--success); }
.step-labels { display: flex; gap: 0; margin-top: 6px; }
.step-labels span { width: 30px; text-align: center; font-size: 11px; font-weight: 600; color: var(--text-muted); }
.step-labels i { width: 44px; }

/* ---------- Forms ---------- */
.field { display: grid; gap: 6px; }
.field label { font-size: 14px; font-weight: 600; }
.field .hint { font-size: 13px; color: var(--text-secondary); }
.input, .select {
  width: 100%; min-height: 48px; padding: 11px 14px;
  background: var(--surface-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-md); font-size: 15px; color: var(--text-primary);
  transition: border-color var(--dur);
}
.input:focus, .select:focus { border-color: var(--accent); outline: none; }
.search-wrap { position: relative; }
.search-wrap svg {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  width: 19px; height: 19px; color: var(--text-muted); pointer-events: none;
}
.search-wrap .input { padding-left: 42px; }

.switch { position: relative; width: 50px; height: 28px; flex: none; }
.switch input { position: absolute; opacity: 0; inset: -10px 0; cursor: pointer; z-index: 2; }
.switch__track {
  position: absolute; inset: 0; border-radius: var(--radius-full);
  background: var(--surface-elevated); border: 1px solid var(--border);
  transition: background 300ms var(--ease-inout), border-color 300ms;
}
.switch__thumb {
  position: absolute; top: 3px; left: 3px; width: 22px; height: 22px;
  border-radius: 50%; background: var(--text-muted);
  transition: transform 300ms var(--ease-inout), background 300ms;
}
.switch input:checked + .switch__track { background: var(--accent-soft); border-color: var(--accent); }
.switch input:checked + .switch__track + .switch__thumb { transform: translateX(22px); background: var(--accent); }
.switch input:focus-visible + .switch__track { outline: 2px solid var(--accent-2); outline-offset: 2px; }

.setting-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  padding: var(--space-4) 0; border-bottom: 1px solid var(--border);
}
.setting-row:last-child { border-bottom: 0; }
.setting-row__text h4 { font-size: 15px; font-weight: 600; }
.setting-row__text p { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }
.setting-row .select { width: auto; min-width: 150px; }

input[type="range"] { accent-color: var(--accent); width: 100%; min-height: 32px; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* ---------- Sign tiles & grids ---------- */
.sign-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: var(--space-3); }
.sign-tile {
  display: grid; justify-items: center; gap: 6px; padding: var(--space-3);
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  transition: transform 200ms var(--ease-out), border-color 200ms; text-align: center;
}
.sign-tile:hover { transform: translateY(-2px); border-color: var(--accent-border); }
.sign-tile.is-selected { border-color: var(--accent); background: var(--accent-soft); }
.sign-tile.is-locked { opacity: 0.55; }
.sign-tile__glyph { font-family: var(--font-display); font-weight: 800; font-size: 26px; line-height: 1; }
.sign-tile__hand { width: 58px; height: 58px; }
.sign-tile__meta { display: flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 600; color: var(--text-secondary); }

/* ---------- Module cards ---------- */
.module-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl);
  padding: var(--space-6); box-shadow: var(--shadow);
  transition: transform 200ms var(--ease-out), border-color 200ms;
}
.module-card:hover { transform: translateY(-2px); border-color: var(--accent-border); }
.module-card.is-locked { opacity: 0.72; }
.module-card.is-locked:hover { transform: none; border-color: var(--border); }
.sign-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.sign-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px; border-radius: var(--radius-sm);
  background: var(--surface-elevated); border: 1px solid var(--border);
  font-family: var(--font-mono); font-weight: 700; font-size: 13px;
}
button.sign-chip:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Streak calendar ---------- */
.streak-head { display: flex; align-items: center; gap: var(--space-3); }
.streak-flame {
  width: 44px; height: 44px; border-radius: var(--radius-md); flex: none;
  display: grid; place-items: center; color: var(--warning); background: var(--warning-soft);
}
.streak-flame svg { width: 24px; height: 24px; }
.calendar { display: grid; gap: 6px; min-width: 0; }
.calendar__head, .calendar__grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 5px; }
.calendar__head span { text-align: center; font-size: 10px; font-weight: 700; letter-spacing: 0.06em; color: var(--text-muted); }
.calendar__day {
  aspect-ratio: 1; border-radius: 7px; display: grid; place-items: center;
  font-size: 11px; font-weight: 600; color: var(--text-muted);
  background: var(--surface-elevated); border: 1px solid transparent; min-height: 0; min-width: 0;
}
button.calendar__day:hover { border-color: var(--accent-border); }
.calendar__day.is-filled { background: var(--accent); color: var(--on-accent); }
.calendar__day.is-today { border-color: var(--accent-2); color: var(--text-primary); }
.calendar__day.is-filled.is-today { border-color: var(--accent-2); box-shadow: 0 0 0 2px var(--accent-2-soft); }
.calendar__day.is-empty { background: transparent; }
.calendar__day.is-future { opacity: 0.35; }
.calendar.lg .calendar__day { font-size: 13px; border-radius: 10px; }
.week-strip { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; min-width: 0; }
.week-strip .calendar__day { font-size: 12px; }

/* ---------- Modal / bottom sheet ---------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 200; background: rgba(10, 18, 22, 0.62);
  display: grid; place-items: center; padding: var(--space-4); animation: fadeIn 200ms both;
}
.modal {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-2xl);
  padding: var(--space-6); max-width: 480px; width: 100%; box-shadow: var(--shadow-lg);
  animation: popIn 260ms var(--ease-out) both; max-height: 88vh; overflow: auto;
}
@media (max-width: 767px) {
  .modal-backdrop { place-items: end center; padding: 0; }
  .modal { border-radius: var(--radius-2xl) var(--radius-2xl) 0 0; max-width: none; animation: sheetUp 300ms var(--ease-out) both; }
}

/* ---------- Toast ---------- */
.toast-stack { position: fixed; z-index: 250; bottom: 84px; left: 50%; transform: translateX(-50%); display: grid; gap: 8px; width: min(92vw, 430px); }
@media (min-width: 768px) { .toast-stack { bottom: 28px; } }
.toast {
  display: flex; gap: var(--space-3); align-items: flex-start;
  background: var(--surface-elevated); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: var(--radius-md);
  padding: 12px 16px; box-shadow: var(--shadow-lg); font-size: 14px;
  animation: fadeUp 300ms var(--ease-out) both;
}
.toast svg { width: 19px; height: 19px; flex: none; color: var(--accent); margin-top: 1px; }
.toast.is-success { border-left-color: var(--success); } .toast.is-success svg { color: var(--success); }
.toast.is-warn { border-left-color: var(--warning); } .toast.is-warn svg { color: var(--warning); }

/* ---------- Camera / session ---------- */
.camera-frame {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--camera-bg); aspect-ratio: 4 / 3; border: 1px solid var(--border);
}
.camera-frame video, .camera-frame canvas {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transform: scaleX(-1); /* selfie mirror */
}
.camera-frame canvas { pointer-events: none; }
.camera-frame__placeholder {
  position: absolute; inset: 0; display: grid; place-items: center; padding: var(--space-6);
  text-align: center; color: #D7E6EE;
}
.camera-pill {
  position: absolute; top: 10px; left: 10px; z-index: 3;
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(11, 20, 24, 0.74); color: #F7FBFF; backdrop-filter: blur(6px);
  padding: 6px 11px; border-radius: var(--radius-full); font-size: 12px; font-weight: 600;
}
.camera-pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-muted); }
.camera-pill .dot.on { background: var(--success); }
.camera-pill.warn { color: #FFE29A; }
.avatar-frame {
  position: relative; border-radius: var(--radius-lg); border: 1px solid var(--border);
  background: var(--surface-elevated); aspect-ratio: 4 / 3;
  display: grid; place-items: center; overflow: hidden;
}
.avatar-frame .demo-hand { width: min(68%, 280px); transition: opacity 220ms; }
.avatar-frame__label {
  position: absolute; top: 10px; left: 10px;
  background: var(--surface); border: 1px solid var(--border);
  padding: 5px 11px; border-radius: var(--radius-full); font-size: 12px; font-weight: 600;
}
.session-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.session-grid.single { grid-template-columns: 1fr; }
.session-feedback { flex: 1 1 250px; min-width: min(250px, 100%); display: grid; gap: 14px; align-content: start; }
.session-actions { display: grid; gap: 10px; min-width: 190px; align-content: start; }
.session-actions .btn { width: 100%; }
.sim-presets { display: flex; gap: 8px; flex-wrap: wrap; }
@media (max-width: 767px) { .session-grid { grid-template-columns: 1fr; } }

/* ---------- Siggy ---------- */
.siggy-wrap { display: grid; justify-items: center; gap: var(--space-3); text-align: center; }
.siggy-art { width: 120px; height: 120px; transition: opacity 300ms; }
.siggy-art.sm { width: 64px; height: 64px; }
.siggy-art.xs { width: 44px; height: 44px; }
.speech-bubble {
  position: relative; background: var(--surface-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 12px 14px; font-size: 14px; font-weight: 500;
  max-width: 100%;
}
.speech-bubble::after {
  content: ""; position: absolute; bottom: -7px; left: 50%; width: 13px; height: 13px;
  background: inherit; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border);
  transform: translateX(-50%) rotate(45deg); border-bottom-right-radius: 3px;
}

/* ---------- Misc ---------- */
.divider { height: 1px; background: var(--border); border: 0; }
.empty-state { text-align: center; padding: var(--space-12) var(--space-6); color: var(--text-secondary); display: grid; justify-items: center; gap: var(--space-3); }
.empty-state svg { width: 40px; height: 40px; color: var(--text-muted); }
.kbd-row { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.stat-card { display: grid; gap: 4px; }
.stat-card .stat-value { font-family: var(--font-mono); font-weight: 700; font-size: 30px; line-height: 1; }
.stat-card .stat-label { font-size: 12px; font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; color: var(--text-secondary); }
.logo { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-display); font-weight: 800; font-size: 21px; color: var(--text-primary); }
.logo:hover { text-decoration: none; }
.logo__mark {
  width: 36px; height: 36px; border-radius: 11px; flex: none;
  background: var(--accent); color: var(--on-accent); display: grid; place-items: center;
  box-shadow: 0 6px 16px var(--glow);
}
.logo__mark svg { width: 21px; height: 21px; }
.streak-count {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; border-radius: var(--radius-full);
  background: var(--warning-soft); color: var(--warning);
  font-family: var(--font-mono); font-weight: 700; font-size: 14px;
}
.streak-count svg { width: 17px; height: 17px; }
.list-row {
  display: flex; align-items: center; gap: var(--space-3); width: 100%;
  padding: 10px 12px; border-radius: var(--radius-md); text-align: left;
  transition: background var(--dur);
}
.list-row:hover { background: var(--surface-elevated); }
.list-row.is-active { background: var(--accent-soft); }
.dot-grid-bg {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='26'%3E%3Ccircle cx='2' cy='2' r='1.4' fill='%2394A3B8' fill-opacity='0.16'/%3E%3C/svg%3E");
}


/* ---------- Responsive fit pass: controls stay visible, aligned, tappable ---------- */
.streak-head { flex-wrap: wrap; row-gap: 10px; }
.setting-row { flex-wrap: wrap; }
.setting-row__text { flex: 1 1 190px; min-width: 0; }
.setting-row .select { flex: 0 1 190px; }

@media (max-width: 767px) {
  .card { padding: 20px; }
  .btn-sm { min-height: 48px; padding: 10px 18px; }
  .btn-lg { min-height: 52px; padding: 13px 22px; font-size: 16px; }
  .chip { min-height: 48px; padding: 10px 16px; }
  .icon-btn { width: 48px; height: 48px; }
  .sign-chip { min-height: 44px; padding: 9px 12px; }
  .calendar__head, .calendar__grid { gap: 4px; }
  .calendar__day { min-height: 42px; }
  .meter { grid-template-columns: minmax(82px, 34%) minmax(0, 1fr) 46px; gap: 10px; }
  .avatar-frame { aspect-ratio: 16 / 10; }
  .avatar-frame [data-demo] { width: min(46%, 170px) !important; }
  .camera-frame { aspect-ratio: auto; min-height: 330px; }
  .camera-frame__placeholder { padding: 20px; }
  .session-actions { width: 100%; min-width: 0; }
  .session-feedback { flex-basis: 100%; }
  .sim-presets { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; }
  .sim-presets .btn { width: 100%; }
  .sign-grid { grid-template-columns: repeat(auto-fill, minmax(min(104px, 100%), 1fr)); }
  .setting-row .select { flex: 1 1 150px; min-width: min(150px, 100%); }
  .modal { padding: 24px 20px calc(24px + env(safe-area-inset-bottom)); }
}

@media (max-width: 380px) {
  .card { padding: 18px; }
  .score-ring { width: 118px; height: 118px; }
  .camera-frame { min-height: 310px; }
}