:root {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --bg: #070b1a;
  --bg-soft: #10172b;
  --panel: #111a30;
  --panel-2: #0d1428;
  --text: #f5f7ff;
  --muted: #9ba7c7;
  --line: #25345f;
  --brand: #4f7cff;
  --brand-2: #68d5ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(circle at top, #132142 0%, var(--bg) 50%);
  min-height: 100dvh;
  overflow-x: hidden;
}

.topbar {
  padding: 1rem;
}

.topbar,
.layout {
  width: min(100%, 1000px);
  margin-inline: auto;
}

.brand-badge {
  display: inline-block;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  color: #d4e2ff;
  background: #1f2e55;
  border: 1px solid #334b84;
}

.topbar h1 {
  margin: 0.8rem 0 0.2rem;
  font-size: 1.6rem;
}

.topbar p {
  margin: 0;
  color: var(--muted);
}

.layout {
  display: grid;
  gap: 0.9rem;
  padding: 0 0.9rem 1rem;
}

.panel {
  background: linear-gradient(180deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.9rem;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

button,
input[type="text"],
input[type="color"] {
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
}

button {
  color: var(--text);
  background: #162342;
  padding: 0.45rem 0.7rem;
}

button.primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #061127;
  border-color: transparent;
  font-weight: 700;
}

.stack { display: grid; gap: 0.7rem; }

label {
  display: grid;
  gap: 0.25rem;
  font-weight: 600;
}

input[type="text"] {
  padding: 0.6rem;
  color: var(--text);
  background: #0a1225;
}

.info-row,
.row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.row > :first-child {
  min-width: 0;
}

.training-item .row > button {
  flex: 1 1 13rem;
  text-align: left;
}

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

.row .actions {
  margin-left: auto;
}

.message,
.hint { color: var(--muted); margin: 0; }

.training-list,
.interval-list {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.training-item,
.interval-item {
  border: 1px solid #24365f;
  border-radius: 12px;
  padding: 0.55rem;
  background: #0a1225;
}

.training-item.active {
  border-color: #4d76e8;
  box-shadow: 0 0 0 2px rgb(77 118 232 / 25%);
}

.interval-item {
  padding: 0;
  overflow: hidden;
}

.interval-item.drag-over {
  border-color: #4d76e8;
  box-shadow: 0 0 0 2px rgb(77 118 232 / 25%);
}

.interval-item.dragging {
  opacity: 0.55;
}

.interval-details {
  display: block;
}

.interval-summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.55rem;
  cursor: pointer;
  list-style: none;
}

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

.drag-handle {
  border: 1px solid #2d4274;
  background: #0f1a33;
  color: var(--muted);
  border-radius: 8px;
  padding: 0.2rem 0.35rem;
  cursor: grab;
  line-height: 1;
  touch-action: none;
  user-select: none;
}


.drag-handle:active {
  cursor: grabbing;
}

.interval-label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-width: 0;
}

.interval-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.95rem;
}

.interval-duration {
  margin-left: auto;
  border-radius: 999px;
  border: 1px solid #2f487f;
  background: #111f3f;
  padding: 0.12rem 0.45rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: #dbe6ff;
}

.interval-quick-actions {
  display: inline-flex;
  gap: 0.3rem;
}

.icon-button {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  padding: 0;
  border-radius: 999px;
  background: #16274a;
}

.icon-button.danger {
  background: #3b1e30;
}

.interval-form-grid {
  margin: 0;
  padding: 0 0.55rem 0.55rem;
}
.interval-color-chip {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  border: 1px solid #fff5;
}

.interval-form-grid {
  margin-top: 0.55rem;
  display: grid;
  gap: 0.45rem;
  grid-template-columns: minmax(0, 1fr);
}

.interval-form-grid label {
  font-size: 0.83rem;
  color: var(--muted);
}

.run-mode {
  min-width: min(480px, 94vw);
  color: var(--text);
}

.run-overview {
  width: 100%;
  height: 18px;
  border: 1px solid #334a83;
  border-radius: 9px;
  display: flex;
  overflow: hidden;
  margin: 0.8rem 0;
}

.run-overview-segment {
  height: 100%;
  border-left: 2px solid rgb(255 255 255 / 90%);
}

.run-overview-segment:first-child { border-left: none; }

.run-overview-segment.active {
  box-shadow: inset 0 0 0 2px #091024;
}

.run-color {
  height: 130px;
  border-radius: 10px;
  border: 1px solid #fff4;
}

.run-interval-name,
.run-remaining {
  text-align: center;
  margin: 0.45rem 0;
}

.run-remaining { font-size: 2.2rem; font-weight: 800; }

.run-actions {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

dialog {
  border: 1px solid #2f426f;
  background: #111a30;
  border-radius: 14px;
  width: min(94vw, 480px);
  max-width: 94vw;
}

@media (min-width: 900px) {
  .layout {
    grid-template-columns: 320px 1fr;
    padding: 0 1.2rem 1.2rem;
  }

  .topbar { padding: 1.2rem; }

  .interval-form-grid {
    grid-template-columns: 88px minmax(0, 1fr) 108px;
  }
}