:root {
  --bg: #f2efe8;
  --bg-alt: #ffffff;
  --surface: rgba(255, 255, 255, 0.78);
  --text: #1f1914;
  --muted: #6d635a;
  --brand: #ff5a1f;
  --brand-2: #ff9d00;
  --ok: #1e9b6a;
  --danger: #be3f2f;
  --border: rgba(31, 25, 20, 0.09);
  --shadow: 0 14px 30px rgba(54, 40, 25, 0.12);
}

body.dark {
  --bg: #131619;
  --bg-alt: #1e2329;
  --surface: rgba(31, 35, 41, 0.88);
  --text: #f6f1eb;
  --muted: #a8a39d;
  --brand: #ff7041;
  --brand-2: #ffc14d;
  --ok: #35d292;
  --danger: #f16f5e;
  --border: rgba(246, 241, 235, 0.09);
  --shadow: 0 14px 30px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background: var(--bg);
}

body {
  padding: 1rem 1rem 5.5rem;
  position: relative;
}

.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 12% 22%, rgba(255, 157, 0, 0.22), transparent 34%),
    radial-gradient(circle at 80% 14%, rgba(255, 90, 31, 0.18), transparent 35%),
    linear-gradient(150deg, var(--bg), var(--bg-alt));
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

h1,
h2,
h3,
.kicker {
  margin: 0;
}

h1,
h2,
h3 {
  font-family: "Bebas Neue", sans-serif;
  letter-spacing: 0.04em;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.6rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.app-shell {
  display: grid;
  gap: 1rem;
}

.view {
  display: none;
  gap: 1rem;
}

.view.active {
  display: grid;
  animation: rise 180ms ease-out;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.kicker {
  text-transform: uppercase;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.8rem;
}

.level-pill {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #121212;
  border-radius: 999px;
  padding: 0.55rem 0.85rem;
  display: grid;
  min-width: 7rem;
  text-align: right;
}

.level-pill small {
  opacity: 0.75;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.stat-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 0.8rem;
}

.stat-card strong {
  font-size: 1.4rem;
  display: block;
}

.progress-list,
.exercise-list,
.session-list,
.history-list {
  display: grid;
  gap: 0.7rem;
}

.progress-item,
.preview-item,
.history-item {
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 0.7rem;
  background: var(--bg-alt);
}

.preview-item {
  display: grid;
  gap: 0.45rem;
}

.preview-item img,
.exercise-visual {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 0.7rem;
  border: 1px solid var(--border);
}

.preview-item p,
.exercise-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.35;
}

.progress-bar {
  height: 0.45rem;
  background: rgba(127, 127, 127, 0.2);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 0.45rem;
}

.progress-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(120deg, var(--brand), var(--brand-2));
}

.chip-grid,
.type-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.chip,
.type-btn {
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  padding: 0.65rem;
  background: var(--bg-alt);
  color: var(--text);
  cursor: pointer;
  text-align: center;
  font-weight: 600;
}

.chip.active,
.type-btn.active {
  border-color: var(--brand);
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--brand) 32%, transparent);
}

.actions-row {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.8rem;
  flex-wrap: wrap;
}

.btn-primary,
.btn-ghost,
.nav-btn {
  font-family: inherit;
  border-radius: 0.7rem;
  border: 1px solid transparent;
  padding: 0.68rem 0.85rem;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #1f1914;
  font-weight: 700;
}

.btn-ghost {
  background: var(--bg-alt);
  color: var(--text);
  border-color: var(--border);
}

.badge {
  background: color-mix(in srgb, var(--brand) 17%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 38%, transparent);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  font-size: 0.8rem;
  color: var(--text);
}

.session-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.session-progress {
  min-width: 40%;
}

.meter {
  height: 0.5rem;
  background: rgba(127, 127, 127, 0.25);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 0.3rem;
}

.meter div {
  height: 100%;
  width: 0;
  transition: width 220ms ease;
  background: linear-gradient(120deg, var(--ok), var(--brand));
}

.exercise-card {
  border: 1px solid var(--border);
  border-radius: 0.95rem;
  padding: 0.85rem;
  background: var(--bg-alt);
}

.exercise-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.exercise-meta {
  margin: 0.35rem 0 0.65rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.exercise-desc {
  margin: 0 0 0.65rem;
}

.set-list {
  display: grid;
  gap: 0.35rem;
}

.set-row {
  display: grid;
  grid-template-columns: 3rem 1fr auto;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem;
  border-radius: 0.6rem;
  border: 1px solid var(--border);
}

.set-row.done {
  background: color-mix(in srgb, var(--ok) 18%, transparent);
}

.set-row input {
  width: 100%;
  border: 1px solid var(--border);
  background: transparent;
  color: inherit;
  border-radius: 0.45rem;
  padding: 0.35rem;
}

.switch-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.timer-mode-label {
  display: block;
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.timer-visual {
  --timer-progress: 0;
  margin-top: 0.7rem;
  width: 84px;
  height: 84px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: conic-gradient(var(--brand) calc(var(--timer-progress) * 1%), color-mix(in srgb, var(--border) 75%, transparent) 0%);
  transition: background 220ms linear;
}

.timer-ring {
  width: 68px;
  height: 68px;
  border-radius: 999px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
}

.timer-panel.running #timer-label {
  animation: timerPulse 1s ease-in-out infinite;
}

@keyframes timerPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

.form-grid {
  display: grid;
  gap: 0.55rem;
}

.form-grid input,
.form-grid select {
  border-radius: 0.6rem;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  padding: 0.62rem;
}

.timer-setting-row {
  margin-top: 0.85rem;
}

.danger-btn {
  margin-top: 0.75rem;
  border-color: color-mix(in srgb, var(--danger) 45%, var(--border));
  color: var(--danger);
}

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.35rem;
  padding: 0.55rem;
  background: color-mix(in srgb, var(--bg-alt) 85%, transparent);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
}

.nav-btn {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
  font-size: 0.8rem;
}

.nav-btn.active {
  color: var(--text);
  border-color: var(--brand);
}

.sticky-actions {
  position: sticky;
  bottom: 5.2rem;
  padding-top: 0.5rem;
  background: linear-gradient(180deg, transparent, var(--bg));
}

.empty {
  color: var(--muted);
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: 0.8rem;
  padding: 1rem;
}

@media (min-width: 760px) {
  body {
    max-width: 980px;
    margin: 0 auto;
    padding-bottom: 5.6rem;
  }

  .chip-grid,
  .type-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .stats-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}