:root {
  color-scheme: light;
  --bg: #f5f6f9;
  --bg-ink: #1f2937;
  --panel: #ffffff;
  --panel-border: #e2e6ee;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --muted: #6b7280;
  --success: #2f7a5f;
  --danger: #b42318;
  --shadow: 0 2px 6px rgba(31, 41, 55, 0.08);
  --radius: 5px;
  --panel-head: #f2f4f8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--bg-ink);
  background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 45%, #e8edf4 100%);
  min-height: 100vh;
}

.app-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 32px 40px 12px;
}

.app-header h1 {
  margin: 0 0 8px;
  font-size: 2.2rem;
  letter-spacing: -0.02em;
}

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

.header-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.menu {
  position: relative;
}

.menu-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 8px;
  min-width: 160px;
  box-shadow: var(--shadow);
  display: none;
  z-index: 20;
}

.menu-panel.open {
  display: grid;
  gap: 6px;
}

.menu-item {
  background: transparent;
  border: none;
  padding: 8px 12px;
  border-radius: var(--radius);
  text-align: left;
  cursor: pointer;
  font-weight: 600;
  color: var(--bg-ink);
}

.menu-item:hover,
.menu-item:focus {
  background: #f1f5fb;
}

.menu-item.danger-text {
  color: var(--danger);
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 24px 40px 40px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.panel.full-width {
  grid-column: 1 / -1;
}

.panel-header {
  margin: -24px -24px 16px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--panel-border);
  background: var(--panel-head);
  border-top-left-radius: var(--radius);
  border-top-right-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.panel-body[hidden] {
  display: none;
}

.collapse-toggle {
  border: none;
  background: nonef;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  cursor: pointer;
}

.collapse-toggle[aria-expanded="false"] .chevron {
  transform: rotate(-90deg);
}

.timer-display {
  font-size: 2.4rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.timer-meta {
  color: var(--muted);
  margin-bottom: 16px;
}

.timer-controls {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.button-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.form-stack {
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
}

.field input,
.field select,
.field textarea {
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--panel-border);
  font-size: 0.95rem;
  font-family: inherit;
}

.field textarea {
  resize: vertical;
  min-height: 90px;
}

.checkbox-field {
  grid-template-columns: auto 1fr;
  align-items: center;
}

.checkbox-field input {
  width: 18px;
  height: 18px;
}

.bold {
  font-weight: 600;
}

.btn {
  border: none;
  border-radius: var(--radius);
  padding: 10px 18px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn.icon-only {
  padding: 9px;
  border: none;
  background-color: transparent;
}

.ui-icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.18s ease;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.24);
}

.btn.primary:hover:not(:disabled) {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.btn.secondary {
  background: #eef2f7;
  color: var(--bg-ink);
}

.btn.danger {
  background: #fdecec;
  color: var(--danger);
}

.status {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--success);
  min-height: 1.2rem;
}

.idle-settings {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--panel-border);
}

.idle-info {
  color: var(--muted);
  font-size: 0.85rem;
}

.list,
.summary {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.list-item,
.summary-item {
  background: #f4f6fb;
  border-radius: var(--radius);
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.9rem;
}

.table-wrap {
  overflow-x: auto;
}

.entries-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.entries-table th,
.entries-table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--panel-border);
  vertical-align: middle;
}

.entries-table tbody tr:hover {
  background: #f7f9fc;
}

.notes-cell {
  display: grid;
  gap: 4px;
  justify-items: center;
  text-align: center;
}

.note-muted {
  color: var(--muted);
  font-size: 0.82rem;
}

.entry-actions {
  text-align: right !important;
}

.icon-btn {
  border: none;
  background: transparent;
  color: var(--bg-ink);
  border-radius: var(--radius);
  width: 30px;
  height: 30px;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
}

.icon-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.icon-btn:hover:not(:disabled) {
  background: #f3f5fa;
}

.icon-btn.play {
  color: #1d4ed8;
}

.icon-btn.stop {
  color: #9f1239;
}

.icon-btn.delete {
  color: var(--danger);
}

.entries-table th {
  font-weight: 600;
  color: var(--muted);
}

.modal {
  border: none;
  border-radius: var(--radius);
  padding: 22px 24px;
  width: min(400px, 92vw);
  box-shadow: var(--shadow);
}

.modal h2 {
  margin: 0 0 6px;
  font-size: 1.08rem;
}

.modal::backdrop {
  background: rgba(31, 36, 48, 0.35);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 8px;
}

.app-footer {
  padding: 10px 40px 30px;
  color: var(--muted);
}

@media (max-width: 720px) {
  .app-header {
    flex-direction: column;
  }

  .app-grid {
    padding: 16px;
  }

  .app-footer {
    padding: 10px 16px 24px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .panel {
    animation: floatIn 0.5s ease both;
  }

  .panel:nth-child(2) {
    animation-delay: 0.05s;
  }

  .panel:nth-child(3) {
    animation-delay: 0.1s;
  }

  .panel:nth-child(4) {
    animation-delay: 0.15s;
  }
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}