/* ── RESET & BASE ─────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; touch-action:manipulation; }

:root {
  --bg:      #0e0e10;
  --surface: #18181c;
  --surface2:#222228;
  --border:  #2e2e38;
  --accent:  #e8380d;
  --accent2: #ff6b3d;
  --green:   #22c55e;
  --blue:    #3b82f6;
  --text:    #f0ede8;
  --muted:   #7a7a8a;
  --warn:    #f59e0b;
  --radius:  14px;
  --safe-bottom: env(safe-area-inset-bottom, 16px);
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
  overflow: hidden;
}

/* ── APP SHELL ─────────────────────────────────── */
#app {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 420px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

/* ── SCREENS ───────────────────────────────────── */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
  transform: translateX(30px);
}
.screen.active {
  opacity: 1;
  pointer-events: all;
  transform: translateX(0);
}
.screen.exit-left {
  opacity: 0;
  transform: translateX(-30px);
  pointer-events: none;
}

/* ── SETUP SCREEN ──────────────────────────────── */
#screen-setup {
  padding: 0 0 calc(var(--safe-bottom) + 24px);
}

.setup-hero {
  padding: 52px 24px 28px;
  position: relative;
  overflow: hidden;
}

.setup-hero::before {
  content: 'FORM';
  position: absolute;
  right: -0.08em;
  bottom: -0.2em;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 11rem;
  color: transparent;
  -webkit-text-stroke: 1px #2a2a32;
  pointer-events: none;
  line-height: 1;
}

.app-logo {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2.2rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  line-height: 1;
  position: relative;
}

.app-tagline {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 4px;
  position: relative;
}

.setup-body { padding: 0 20px; display: flex; flex-direction: column; gap: 28px; }

.setup-section { display: flex; flex-direction: column; gap: 12px; }

.setup-label {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

/* Duration slider */
.duration-display {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 4rem;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--text);
}
.duration-display span { font-size: 1.4rem; color: var(--muted); margin-left: 6px; }

.slider-track {
  position: relative;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  margin: 14px 0 6px;
}
.slider-fill {
  position: absolute;
  left: 0; top: 0; height: 100%;
  background: var(--accent);
  border-radius: 3px;
  pointer-events: none;
  transition: width 0.08s;
}
input[type=range] {
  position: absolute;
  inset: -14px 0;
  width: 100%;
  height: 34px;
  opacity: 1;
  cursor: grab;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}
input[type=range]:active { cursor: grabbing; }

input[type=range]::-webkit-slider-runnable-track { background: transparent; height: 6px; }
input[type=range]::-moz-range-track { background: transparent; }

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(232,56,13,0.25), 0 2px 8px rgba(0,0,0,0.5);
  margin-top: -9px;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
input[type=range]:active::-webkit-slider-thumb {
  transform: scale(1.2);
  box-shadow: 0 0 0 8px rgba(232,56,13,0.15), 0 2px 8px rgba(0,0,0,0.5);
}
input[type=range]::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(232,56,13,0.25), 0 2px 8px rgba(0,0,0,0.5);
}

@keyframes thumb-pulse {
  0%   { box-shadow: 0 0 0 3px rgba(232,56,13,0.25), 0 2px 8px rgba(0,0,0,0.5); }
  50%  { box-shadow: 0 0 0 11px rgba(232,56,13,0.18), 0 2px 8px rgba(0,0,0,0.5); }
  100% { box-shadow: 0 0 0 3px rgba(232,56,13,0.25), 0 2px 8px rgba(0,0,0,0.5); }
}
input[type=range].pulse-intro::-webkit-slider-thumb {
  animation: thumb-pulse 0.75s ease-in-out 0.4s 2;
}
@media (prefers-reduced-motion: reduce) {
  input[type=range].pulse-intro::-webkit-slider-thumb { animation: none; }
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--muted);
}

/* Muscle chips */
.muscle-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.muscle-chip {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 10px;
  user-select: none;
  text-align: left;
  font-family: inherit;
  color: var(--text);
  width: 100%;
}
.muscle-chip:active { transform: scale(0.97); }
.muscle-chip.selected {
  background: rgba(232,56,13,0.12);
  border-color: var(--accent);
}
.muscle-chip .chip-icon { font-size: 1.3rem; flex-shrink: 0; }
.muscle-chip .chip-name { font-size: 0.88rem; font-weight: 500; }
.muscle-chip .chip-sub  { font-size: 0.68rem; color: var(--muted); margin-top: 1px; }
.muscle-chip .chip-check {
  margin-left: auto;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 0.6rem;
  transition: all 0.2s;
}
.muscle-chip.selected .chip-check {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

/* Injury buttons */
.injury-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}
.injury-btn {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 8px;
  min-height: 44px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  transition: all 0.18s;
  user-select: none;
}
.injury-btn:active { transform: scale(0.96); }
.injury-btn.active {
  background: rgba(245,158,11,0.12);
  border-color: var(--warn);
}
.injury-btn .inj-icon { display: flex; align-items: center; justify-content: center; color: #fff; }
.injury-btn .inj-icon svg { width: 1.25rem; height: 1.25rem; display: block; }
.injury-btn .inj-label {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-align: center;
  line-height: 1.2;
}
.injury-btn.active .inj-label { color: var(--warn); }

/* Phase section headers in plan */
.plan-phase-header {
  padding: 10px 20px 8px;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1rem;
  letter-spacing: 0.12em;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  border-bottom: 1px solid var(--border);
}
.warmup-header  { color: #f59e0b; }
.main-header    { color: var(--text); }
.cooldown-header { color: #06b6d4; }
.phase-icon     { display: inline-flex; align-items: center; }
.phase-icon svg { width: 1rem; height: 1rem; display: block; }
.phase-duration { margin-left: auto; font-size: 0.75rem; color: var(--muted); font-family: 'DM Sans', sans-serif; font-weight: 400; letter-spacing: 0; }

.warmup-card  { border-left: 2px solid rgba(245,158,11,0.4); }
.cooldown-card { border-left: 2px solid rgba(6,182,212,0.4); }

/* Warmup / cooldown timer button colours */
.ctrl-btn.warmup-mode  { background: #b45309; box-shadow: 0 4px 20px rgba(245,158,11,0.3); }
.ctrl-btn.warmup-mode:hover { background: #92400e; }
.ctrl-btn.cooldown-mode { background: #0e7490; box-shadow: 0 4px 20px rgba(6,182,212,0.3); }
.ctrl-btn.cooldown-mode:hover { background: #0c6279; }

.ex-anim-wrap {
  width: 96px; height: 54px;
  flex-shrink: 0;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.ex-img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

.session-anim-wrap {
  width: 100%;
  padding: 0 0 10px;
}
.sess-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
}



/* Generate button */
.generate-btn {
  width: 100%;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  padding: 18px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 8px 32px rgba(232,56,13,0.35);
  margin-top: 8px;
}
.generate-btn:active { transform: scale(0.98); }
.generate-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.generate-btn .btn-arrow { font-size: 1.2rem; }

.setup-github {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 14px 0 4px;
  opacity: 0.75;
  transition: opacity 0.15s, color 0.15s;
}
.setup-github:hover { opacity: 1; color: var(--accent); }
.setup-github svg { width: 14px; height: 14px; flex-shrink: 0; }

/* ── Feedback FAB ─────────────────────────────── */
.feedback-fab {
  position: absolute;
  bottom: calc(20px + env(safe-area-inset-bottom));
  right: 16px;
  z-index: 500;
  display: flex;
  align-items: center;
  gap: 7px;
  background: #fff;
  color: #e8380d;
  border-radius: 999px;
  padding: 0 16px 0 12px;
  min-height: 44px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  touch-action: manipulation;
  box-shadow: 0 4px 20px rgba(0,0,0,0.35), 0 1px 4px rgba(0,0,0,0.2);
  transition: transform 0.15s ease-out, box-shadow 0.15s ease-out, padding 0.25s ease-out, gap 0.25s ease-out;
}
.feedback-fab svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}
.feedback-fab:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 28px rgba(0,0,0,0.45), 0 1px 4px rgba(0,0,0,0.2);
}
.feedback-fab:active { transform: scale(0.96); }

/* Label — animates in/out rather than display:none snapping */
.fab-label {
  white-space: nowrap;
  overflow: hidden;
  max-width: 6rem;
  opacity: 1;
  transition: max-width 0.25s ease-out, opacity 0.2s ease-out;
}

/* Collapsed state (JS-applied after 3s) */
.feedback-fab.is-collapsed {
  padding: 0 14px;
  gap: 0;
  justify-content: center;
}
.feedback-fab.is-collapsed .fab-label {
  max-width: 0;
  opacity: 0;
  transition: max-width 0.2s ease-in, opacity 0.15s ease-in;
}

/* Desktop: hovering a collapsed button reveals the label */
@media (hover: hover) and (pointer: fine) {
  .feedback-fab.is-collapsed:hover {
    padding: 0 16px 0 12px;
  }
  .feedback-fab.is-collapsed:hover .fab-label {
    max-width: 6rem;
    opacity: 1;
  }
}

/* Tooltip */
.feedback-fab::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 12px);
  right: 0;
  background: #252528;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  text-transform: none;
  line-height: 1.55;
  padding: 10px 13px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 8px 24px rgba(0,0,0,0.55);
  width: 215px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  white-space: normal;
}
/* Arrow */
.feedback-fab::after {
  content: '';
  position: absolute;
  bottom: calc(100% + 5px);
  right: 20px;
  border: 6px solid transparent;
  border-top-color: #252528;
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.feedback-fab:hover::before,
.feedback-fab:hover::after {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .feedback-fab,
  .feedback-fab::before,
  .feedback-fab::after { transition: none; }
}

/* ── LOADING SCREEN ────────────────────────────── */
#screen-loading {
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.loading-ring {
  width: 72px; height: 72px;
  position: relative;
}
.loading-ring svg { transform: rotate(-90deg); }
.loading-ring .ring-bg { fill: none; stroke: var(--border); stroke-width: 4; }
.loading-ring .ring-spin {
  fill: none; stroke: var(--accent); stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 160;
  stroke-dashoffset: 40;
  animation: spin-ring 1.2s linear infinite;
}
@keyframes spin-ring {
  to { stroke-dashoffset: -120; }
}

.loading-text {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  color: var(--text);
}
.loading-sub {
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
  max-width: 240px;
  line-height: 1.5;
}
.loading-dots span {
  display: inline-block;
  animation: blink 1.2s infinite;
  font-size: 1.4rem;
}
.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%,80%,100%{opacity:0} 40%{opacity:1} }

/* ── PLAN SCREEN ───────────────────────────────── */
#screen-plan {
  overflow: hidden;
}

.plan-header {
  padding: 48px 20px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.plan-scroll-body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: calc(var(--safe-bottom) + 24px);
}

.plan-header::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(232,56,13,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.plan-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.plan-back {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: none; border: none; cursor: pointer;
  padding: 0;
  min-height: 44px;
}

.plan-header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.plan-share {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  padding: 8px 14px;
  min-height: 44px;
  transition: background 0.2s;
  font-family: inherit;
}
.plan-share:active { background: var(--border); }

.plan-regen {
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(232,56,13,0.08);
  border: 1px solid rgba(232,56,13,0.25);
  border-radius: 8px;
  cursor: pointer;
  padding: 8px 14px;
  min-height: 44px;
  transition: background 0.2s;
  font-family: inherit;
}
.plan-regen:active { background: rgba(232,56,13,0.18); }

.ex-swap-btn {
  display: block;
  margin-top: 6px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 8px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
  white-space: nowrap;
}
.ex-swap-btn:active { background: var(--surface2); color: var(--accent); border-color: var(--accent); }

.plan-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2.4rem;
  line-height: 1;
  letter-spacing: 0.04em;
}

.plan-meta {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.plan-badge {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 5px;
}
.plan-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.plan-badge.green .dot { background: var(--green); }
.plan-badge.blue  .dot { background: var(--blue); }
.plan-badge.warn  .dot { background: var(--warn); }

.plan-notice {
  margin: 12px 0 0;
  padding: 12px 14px;
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.25);
  border-radius: var(--radius);
  font-size: 0.76rem;
  color: var(--warn);
  line-height: 1.5;
  display: none;
}
.plan-notice.visible { display: block; }

.exercise-list { padding: 16px 20px 0; display: flex; flex-direction: column; gap: 12px; }

.ex-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: border-color 0.2s;
}
.ex-card.active-card { border-color: var(--accent); }
.ex-card.done-card { opacity: 0.5; }

.ex-card-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.5rem;
  color: var(--border);
  line-height: 1;
  min-width: 28px;
  text-align: center;
  flex-shrink: 0;
  transition: color 0.2s;
}
.ex-card.active-card .ex-card-num { color: var(--accent); }

.ex-card-body { flex: 1; min-width: 0; }

.ex-card-name {
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ex-card-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 6px; }
.ex-tag {
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 500;
}
.tag-muscle  { background: rgba(59,130,246,0.15); color: #60a5fa; }
.tag-warn    { background: rgba(245,158,11,0.15); color: var(--warn); }
.tag-rehab   { background: rgba(34,197,94,0.15); color: #4ade80; }

.ex-card-desc { font-size: 0.76rem; color: var(--muted); line-height: 1.45; }

.ex-card-sets {
  text-align: right;
  flex-shrink: 0;
}
.ex-sets-val  { font-family: 'Bebas Neue', sans-serif; font-size: 1.3rem; line-height: 1; letter-spacing: 0.04em; }
.ex-sets-unit { font-size: 0.6rem; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; }
.ex-sets-rest { font-size: 0.65rem; color: var(--muted); margin-top: 3px; }

/* Start workout button */
.start-workout-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: calc(100% - 40px);
  margin: 20px auto 0;
  background: var(--green);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  padding: 18px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 8px 32px rgba(34,197,94,0.25);
}
.start-workout-btn:active { transform: scale(0.98); }

/* ── ACTIVE SESSION SCREEN ─────────────────────── */
#screen-session {
  padding: 0;
}

.session-header {
  padding: 48px 20px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}

.session-back {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; flex-shrink: 0;
  font-size: 0.9rem;
  border: none;
  color: var(--muted);
}

.session-progress-wrap { flex: 1; }
.session-progress-label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 5px;
}
.session-progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.session-progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.5s ease;
}

/* Big exercise display */
.session-exercise {
  padding: 8px 20px 0;
  flex: 1;
}

.session-ex-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 4px;
}
.session-ex-num svg { width: 1.4rem; height: 1.4rem; display: block; }

.sess-name-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
}
.session-ex-name {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2rem;
  line-height: 1.05;
  letter-spacing: 0.03em;
  flex: 1;
}
.sess-swap-btn {
  flex-shrink: 0;
  margin-top: 4px;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  touch-action: manipulation;
}
.sess-swap-btn:hover { border-color: var(--accent); color: var(--accent); }
.sess-swap-btn:active { transform: scale(0.93); }
.sess-swap-btn svg { width: 16px; height: 16px; }

.session-ex-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }

.session-ex-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.55;
  padding: 12px 14px;
  background: var(--surface);
  border-radius: 10px;
  border-left: 3px solid var(--accent);
  margin-bottom: 10px;
}

.session-ex-tip {
  display: flex;
  align-items: flex-start;
  gap: 5px;
  font-size: 0.75rem;
  color: var(--muted);
  font-style: italic;
  line-height: 1.45;
}
.session-ex-tip svg { width: 0.85rem; height: 0.85rem; flex-shrink: 0; margin-top: 0.15em; }

/* Timer ring — big */
.session-timer-area {
  padding: 16px 20px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.big-ring-wrap {
  position: relative;
  width: 180px; height: 180px;
}
.big-ring-wrap svg { transform: rotate(-90deg); }
.big-ring-bg  { fill: none; stroke: var(--border); stroke-width: 8; }
.big-ring-fg  { fill: none; stroke-width: 8; stroke-linecap: round; transition: stroke-dashoffset 0.95s linear, stroke 0.3s; }

.big-ring-inner {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.big-phase {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}
.big-time {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 3.6rem;
  line-height: 1;
  letter-spacing: 0.02em;
}
.big-sets-label {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 2px;
}
.big-side-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(232,56,13,0.15);
  color: var(--accent);
  display: none;
}
.big-side-label.visible { display: inline-block; }

.session-sets-dots {
  display: flex;
  gap: 8px;
}
.set-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.3s;
}
.set-dot.done   { background: var(--green); }
.set-dot.active { background: var(--accent); }

/* Control buttons */
.session-controls {
  padding: 16px 20px calc(var(--safe-bottom) + 20px);
  display: flex;
  gap: 12px;
}

.ctrl-btn {
  flex: 1;
  padding: 16px;
  border-radius: var(--radius);
  border: none;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: all 0.2s;
}
.ctrl-btn:active { transform: scale(0.97); }

.ctrl-main {
  background: var(--accent);
  color: white;
  flex: 2;
  box-shadow: 0 4px 20px rgba(232,56,13,0.3);
}
.ctrl-main.rest-mode { background: var(--blue); box-shadow: 0 4px 20px rgba(59,130,246,0.3); }
.ctrl-main.done-mode { background: var(--green); box-shadow: 0 4px 20px rgba(34,197,94,0.3); }

.ctrl-skip {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
}
.ctrl-prev {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
}
.ctrl-prev:disabled {
  opacity: 0.3;
  cursor: default;
}

/* Finish screen overlay */
#finish-overlay {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 999;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 20px;
  opacity: 0; pointer-events: none;
  transition: opacity 0.5s;
  max-width: 420px;
  margin: 0 auto;
}
#finish-overlay.show { opacity: 1; pointer-events: all; }

.finish-icon { color: #f59e0b; }
.finish-icon svg { width: 4rem; height: 4rem; display: block; margin: 0 auto; }
.finish-title { font-family: 'Bebas Neue', sans-serif; font-size: 3rem; letter-spacing: 0.08em; }
.finish-sub { font-size: 0.85rem; color: var(--muted); text-align: center; max-width: 260px; line-height: 1.5; }
.finish-stats {
  display: flex;
  gap: 24px;
  padding: 20px 24px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.finish-stat { text-align: center; flex: 1; }
.finish-stat-val  { font-family: 'Bebas Neue', sans-serif; font-size: 2rem; color: var(--accent); letter-spacing: 0.04em; }
.finish-stat-label { font-size: 0.65rem; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; }

.finish-completion { width: 100%; padding: 0 4px; }
.finish-completion-bar {
  height: 5px;
  background: var(--surface2);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}
.finish-completion-fill {
  height: 100%;
  background: #22c55e;
  border-radius: 3px;
  width: 0%;
  transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.finish-completion-label {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-align: center;
}

.finish-share-btn {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1rem;
  letter-spacing: 0.15em;
  padding: 14px 36px;
  cursor: pointer;
  transition: all 0.2s;
}
.finish-share-btn:active { transform: scale(0.97); }
.finish-btn {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  padding: 18px 40px;
  cursor: pointer;
  transition: all 0.2s;
}
.finish-btn:active { transform: scale(0.97); }

/* ── UTILS ─────────────────────────────────────── */
.hidden { display: none !important; }

/* error toast */
#toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #3b1010;
  border: 1px solid #7a2020;
  color: #ff8080;
  font-size: 0.8rem;
  padding: 12px 20px;
  border-radius: 10px;
  max-width: 320px;
  text-align: center;
  line-height: 1.4;
  z-index: 999;
  opacity: 0;
  transition: all 0.3s;
  pointer-events: none;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── RESPONSIVE ────────────────────────────────── */
@media (min-width: 640px) {
  body {
    background: #07070a;
  }

  #app {
    max-width: 640px;
    box-shadow: 0 0 0 1px var(--border);
  }

  .setup-hero    { padding: 52px 32px 28px; }
  .setup-body    { padding: 0 32px; }

  .muscle-grid   { grid-template-columns: repeat(3, 1fr); }
  .injury-grid   { grid-template-columns: repeat(4, 1fr); }

  .plan-header   { padding: 48px 32px 20px; }
  .plan-notice   { margin: 12px 0 0; }
  .exercise-list { padding: 16px 32px 0; }
  .start-workout-btn { width: calc(100% - 64px); margin: 20px auto 0; display: flex; }

  .session-header   { padding: 48px 32px 16px; }
  .session-exercise { padding: 8px 32px 0; }
  .session-controls { padding: 16px 32px calc(var(--safe-bottom) + 20px); }

  .big-ring-wrap     { width: 200px; height: 200px; }
  .big-ring-wrap svg { width: 200px; height: 200px; }
  .big-time          { font-size: 4rem; }

  .finish-stats { gap: 40px; padding: 24px 40px; }
}

@media (min-width: 1024px) {
  #app { max-width: 900px; }

  /* Setup — 2-col grid: duration + generate button span full width */
  .setup-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px 40px;
    padding: 0 40px;
    align-items: start;
  }
  .setup-body > .setup-section:first-child { grid-column: 1 / -1; }
  .generate-btn { grid-column: 1 / -1; margin-top: 0; }
  .setup-github { grid-column: 1 / -1; }

  /* Plan — 2-col exercise grid; phase headers always span full */
  .plan-header   { padding: 48px 40px 20px; }
  .plan-notice   { margin: 12px 0 0; }
  .exercise-list {
    padding: 16px 40px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .plan-phase-header { grid-column: 1 / -1; }
  .start-workout-btn { width: calc(100% - 80px); margin: 20px auto 0; display: flex; }

  /* Session */
  .session-header   { padding: 48px 40px 16px; }
  .session-exercise { padding: 8px 40px 0; }
  .session-controls { padding: 16px 40px calc(var(--safe-bottom) + 20px); }

  .big-ring-wrap     { width: 220px; height: 220px; }
  .big-ring-wrap svg { width: 220px; height: 220px; }
  .big-time          { font-size: 4.4rem; }
}

/* ── REDUCED MOTION ────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .screen { transition: opacity 0.15s ease; transform: none !important; }
  .screen.exit-left { transform: none !important; }
  .ring-spin { animation: none; stroke-dashoffset: 40; }
  .loading-dots span { animation: none; opacity: 1; }
  .big-ring-fg { transition: stroke-dashoffset 0.1s linear, stroke 0.1s; }
}

/* ── HISTORY STREAK BAR ────────────────────────── */
.history-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  min-height: 20px;
}
.history-streak {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.history-last {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.history-dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}