:root {
  --ink: #12201c;
  --muted: #4a5c55;
  --line: rgba(18, 32, 28, 0.16);
  --panel: rgba(255, 255, 255, 0.88);
  --accent: #1a9b6c;
  --accent-deep: #0d6b4a;
  --danger: #b42318;
  --font-display: "Syne", "PingFang TC", sans-serif;
  --font-body: "DM Sans", "PingFang TC", sans-serif;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: #e8f2ec;
  line-height: 1.5;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 480px at 0% -10%, #9fe8c8 0%, transparent 55%),
    radial-gradient(700px 420px at 100% 0%, #b8d4f0 0%, transparent 50%),
    linear-gradient(165deg, #f2faf6 0%, #e4efe9 100%);
  pointer-events: none;
}

.app {
  position: relative;
  z-index: 1;
  width: min(640px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
}

.top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  animation: rise 0.45s ease both;
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 6vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}

.tagline {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.nav {
  display: flex;
  gap: 0.35rem;
}

.nav-btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.nav-btn[aria-current="page"] {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.view {
  animation: rise 0.4s ease both;
}

.view[hidden] {
  display: none !important;
}

.view-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.view-head-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: flex-end;
}

.list-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.85rem;
  padding: 0.75rem 0.9rem;
  border-radius: 14px;
  background: rgba(26, 155, 108, 0.14);
  border: 1px solid rgba(26, 155, 108, 0.28);
  font-size: 0.92rem;
}

.list-banner[hidden] {
  display: none !important;
}

.workout-list li.is-new {
  border-color: rgba(26, 155, 108, 0.45);
  box-shadow: 0 0 0 2px rgba(26, 155, 108, 0.12);
}

.import-panel {
  margin: 1rem 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.import-step {
  margin: 0 0 0.75rem;
  font-weight: 700;
  font-family: var(--font-display);
}

.import-file-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
}

.file-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.95rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  font-weight: 600;
  cursor: pointer;
}

.file-btn input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-name {
  color: var(--muted);
  font-size: 0.88rem;
}

.import-mode-grid {
  display: grid;
  gap: 0.55rem;
}

.import-mode-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  text-align: left;
  padding: 0.85rem 1rem;
  width: 100%;
}

.mode-desc {
  font-weight: 400;
  font-size: 0.82rem;
  opacity: 0.85;
}

.import-advanced {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.import-advanced summary {
  cursor: pointer;
  font-weight: 600;
}

h1 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
}

.hint {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.hint a {
  color: var(--accent-deep);
}

.workout-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.workout-list li {
  display: grid;
  gap: 0.55rem;
  padding: 1rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  backdrop-filter: blur(8px);
}

.workout-list .name {
  font-weight: 700;
  font-size: 1.05rem;
}

.workout-list .meta {
  color: var(--muted);
  font-size: 0.85rem;
}

.workout-list .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.primary-btn,
.ghost-btn,
.danger-btn,
.text-btn {
  font: inherit;
  cursor: pointer;
  border-radius: 12px;
  padding: 0.55rem 0.95rem;
  font-weight: 600;
}

.primary-btn {
  border: none;
  background: var(--accent);
  color: #fff;
}

.primary-btn:hover {
  background: var(--accent-deep);
}

.ghost-btn {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
  color: var(--ink);
}

.danger-btn {
  border: 1px solid rgba(180, 35, 24, 0.35);
  background: rgba(180, 35, 24, 0.08);
  color: var(--danger);
}

.text-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 0.25rem 0;
  margin-bottom: 0.75rem;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.player-exercise {
  margin: 0.35rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.player-label {
  margin: 0.5rem 0 0;
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

.player-display {
  margin: 0.55rem 0 0;
  font-size: 1.2rem;
  font-weight: 500;
  min-height: 2.6em;
}

.player-phase {
  margin: 0.85rem 0 0;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent-deep);
  min-height: 1.2em;
}

.timer-ring {
  margin: 0.5rem 0 0.6rem;
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  animation: pulse 1s ease infinite;
}

.player-outline {
  margin-top: 1.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 0.75rem 0.9rem 0.9rem;
}

.player-outline summary {
  cursor: pointer;
  font-weight: 700;
  font-family: var(--font-display);
  list-style: none;
}

.player-outline summary::-webkit-details-marker {
  display: none;
}

.outline-list {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.3rem;
  max-height: 280px;
  overflow: auto;
}

.outline-list li {
  border-radius: 10px;
}

.outline-jump {
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  font: inherit;
  font-size: 0.88rem;
  color: var(--muted);
  padding: 0.45rem 0.55rem;
  cursor: pointer;
  border-radius: 10px;
}

.outline-list li.is-current .outline-jump {
  background: rgba(26, 155, 108, 0.16);
  color: var(--ink);
  font-weight: 600;
}

.outline-list li.is-done .outline-jump {
  opacity: 0.55;
}

.outline-list li.is-rest .outline-jump {
  font-style: italic;
}

.player-seconds {
  font-family: var(--font-display);
  font-size: clamp(4.5rem, 18vw, 6.5rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.player-sec-unit {
  font-size: 1.1rem;
  color: var(--muted);
  font-weight: 600;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.88;
  }
}

.player-progress {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.player-actions,
.row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.field {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.field input,
.field textarea,
.field select {
  font: inherit;
  font-weight: 400;
  padding: 0.65rem 0.75rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.85);
  color: var(--ink);
  width: 100%;
}

.field textarea {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.8rem;
  line-height: 1.45;
  resize: vertical;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
  font-weight: 500;
}

.status {
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
  color: var(--accent-deep);
  min-height: 1.3em;
  white-space: pre-wrap;
  padding: 0.55rem 0.75rem;
  border-radius: 12px;
  background: rgba(26, 155, 108, 0.1);
}

.status:empty {
  display: none;
}

.status.is-error {
  color: var(--danger);
  background: rgba(180, 35, 24, 0.08);
}

.ed-stack {
  display: grid;
  gap: 0.85rem;
}

.ed-exercise {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem;
  background: var(--panel);
}

.ed-cycle {
  margin: 0.65rem 0;
  padding: 0.75rem;
  border-radius: 12px;
  border: 1px solid rgba(26, 155, 108, 0.25);
  background: rgba(255, 255, 255, 0.45);
}

.ed-cycle-hint {
  margin: 0 0 0.55rem;
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--muted);
}

.ed-exercise > .field {
  margin-bottom: 0.55rem;
}

.ed-cues {
  display: grid;
  gap: 0.55rem;
  margin: 0.55rem 0;
}

.ed-cue {
  display: grid;
  gap: 0.4rem;
  padding: 0.65rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px dashed var(--line);
}

.ed-cue-grid {
  display: grid;
  grid-template-columns: 1fr 88px;
  gap: 0.4rem;
}

.ed-mini-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

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

@media (max-width: 480px) {
  .ed-cue-grid {
    grid-template-columns: 1fr;
  }
}