:root {
  color-scheme: dark;
  --bg: #0c1110;
  --panel: rgba(19, 24, 23, 0.86);
  --panel-2: rgba(23, 29, 27, 0.92);
  --panel-soft: rgba(16, 20, 20, 0.72);
  --panel-deep: rgba(13, 17, 17, 0.84);
  --border: rgba(168, 179, 176, 0.12);
  --text: #edf1ef;
  --muted: #95a09c;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.18);
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.12);
  --ambient-1: rgba(111, 150, 131, 0.1);
  --ambient-2: rgba(211, 219, 216, 0.06);
  --ambient-3: rgba(121, 181, 155, 0.08);
  --surface-tint: rgba(121, 181, 155, 0.05);
  --surface-tint-strong: rgba(121, 181, 155, 0.08);
  --accent: #79b59b;
  --accent-strong: #6da78e;
  --accent-soft: rgba(121, 181, 155, 0.14);
  --accent-contrast: #08130f;
  --danger: #d89090;
}

:root[data-mode="light"] {
  color-scheme: light;
  --bg: #f5f7f5;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-2: rgba(248, 250, 249, 0.95);
  --panel-soft: rgba(255, 255, 255, 0.68);
  --panel-deep: rgba(243, 246, 244, 0.92);
  --border: rgba(30, 46, 40, 0.1);
  --text: #18211d;
  --muted: #66736f;
  --shadow: 0 18px 44px rgba(22, 34, 29, 0.08);
  --shadow-soft: 0 10px 24px rgba(22, 34, 29, 0.06);
  --ambient-1: rgba(127, 163, 145, 0.12);
  --ambient-2: rgba(255, 255, 255, 0.7);
  --ambient-3: rgba(121, 181, 155, 0.1);
  --surface-tint: rgba(121, 181, 155, 0.04);
  --surface-tint-strong: rgba(121, 181, 155, 0.07);
}

:root[data-theme="red"] {
  --accent: #b06d69;
  --accent-strong: #9b5d59;
  --accent-soft: rgba(176, 109, 105, 0.14);
  --ambient-1: rgba(176, 109, 105, 0.12);
  --ambient-3: rgba(176, 109, 105, 0.08);
  --surface-tint: rgba(176, 109, 105, 0.05);
  --surface-tint-strong: rgba(176, 109, 105, 0.08);
}

:root[data-theme="orange"] {
  --accent: #c18a5f;
  --accent-strong: #ab7751;
  --accent-soft: rgba(193, 138, 95, 0.14);
  --ambient-1: rgba(193, 138, 95, 0.12);
  --ambient-3: rgba(193, 138, 95, 0.08);
  --surface-tint: rgba(193, 138, 95, 0.05);
  --surface-tint-strong: rgba(193, 138, 95, 0.08);
}

:root[data-theme="yellow"] {
  --accent: #c0a164;
  --accent-strong: #ab8d53;
  --accent-soft: rgba(192, 161, 100, 0.14);
  --ambient-1: rgba(192, 161, 100, 0.12);
  --ambient-3: rgba(192, 161, 100, 0.08);
  --surface-tint: rgba(192, 161, 100, 0.05);
  --surface-tint-strong: rgba(192, 161, 100, 0.08);
}

:root[data-theme="green"] {
  --accent: #79b59b;
  --accent-strong: #6da78e;
  --accent-soft: rgba(121, 181, 155, 0.14);
  --ambient-1: rgba(121, 181, 155, 0.12);
  --ambient-3: rgba(121, 181, 155, 0.08);
  --surface-tint: rgba(121, 181, 155, 0.05);
  --surface-tint-strong: rgba(121, 181, 155, 0.08);
}

:root[data-theme="cyan"] {
  --accent: #70aba9;
  --accent-strong: #5f9896;
  --accent-soft: rgba(112, 171, 169, 0.14);
  --ambient-1: rgba(112, 171, 169, 0.12);
  --ambient-3: rgba(112, 171, 169, 0.08);
  --surface-tint: rgba(112, 171, 169, 0.05);
  --surface-tint-strong: rgba(112, 171, 169, 0.08);
}

:root[data-theme="blue"] {
  --accent: #6d92c1;
  --accent-strong: #5b7eab;
  --accent-soft: rgba(109, 146, 193, 0.14);
  --ambient-1: rgba(109, 146, 193, 0.12);
  --ambient-3: rgba(109, 146, 193, 0.08);
  --surface-tint: rgba(109, 146, 193, 0.05);
  --surface-tint-strong: rgba(109, 146, 193, 0.08);
}

:root[data-theme="purple"] {
  --accent: #8c79b3;
  --accent-strong: #79669f;
  --accent-soft: rgba(140, 121, 179, 0.14);
  --ambient-1: rgba(140, 121, 179, 0.12);
  --ambient-3: rgba(140, 121, 179, 0.08);
  --surface-tint: rgba(140, 121, 179, 0.05);
  --surface-tint-strong: rgba(140, 121, 179, 0.08);
}

:root[data-theme="graphite"] {
  --accent: #8f989f;
  --accent-strong: #7c868d;
  --accent-soft: rgba(143, 152, 159, 0.14);
  --ambient-1: rgba(143, 152, 159, 0.11);
  --ambient-3: rgba(143, 152, 159, 0.07);
  --surface-tint: rgba(143, 152, 159, 0.045);
  --surface-tint-strong: rgba(143, 152, 159, 0.07);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  background:
    radial-gradient(circle at 14% 16%, var(--ambient-1), transparent 26%),
    radial-gradient(circle at 86% 18%, var(--ambient-3), transparent 22%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg) 92%, var(--surface-tint)), var(--bg));
  color: var(--text);
  transition: background-color 0.35s ease, color 0.35s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at top left, var(--ambient-1), transparent 32%),
    radial-gradient(circle at bottom right, var(--ambient-2), transparent 28%),
    radial-gradient(circle at 50% 100%, var(--ambient-3), transparent 30%);
  pointer-events: none;
  transition: background 0.35s ease;
}

.app-shell {
  position: relative;
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.hero-main {
  display: grid;
  gap: 10px;
}

.hero-side {
  display: grid;
  justify-items: end;
  gap: 12px;
}

.eyebrow,
.section-kicker {
  margin: 0;
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1,
.section-head h2,
.history-header h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 1;
  font-weight: 500;
  letter-spacing: -0.03em;
}

.section-head h2,
.history-header h2 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
}

.hero-copy,
.section-note {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.hero-copy {
  max-width: 420px;
}

.status-toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.86rem;
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-soft);
}

.update-toast {
  position: fixed;
  right: 24px;
  bottom: 72px;
  z-index: 31;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 10px 12px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--panel) 90%, var(--theme-soft));
  border: 1px solid color-mix(in srgb, var(--border) 78%, var(--accent) 22%);
  color: var(--text);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-soft);
}

.settings-entry {
  position: relative;
}

.settings-entry summary {
  list-style: none;
}

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

.settings-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.settings-trigger::after {
  content: "+";
  color: var(--accent);
}

.settings-entry[open] .settings-trigger::after {
  content: "-";
}

.panel {
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 95%, var(--surface-tint)), var(--panel));
  border: 1px solid var(--border);
  border-radius: 22px;
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow);
}

.theme-panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(220px, 0.9fr) minmax(220px, 0.8fr) minmax(0, 1.4fr);
  gap: 14px;
  align-items: stretch;
  width: min(860px, calc(100vw - 40px));
  padding: 18px 20px;
}

.theme-panel-head,
.theme-group {
  display: grid;
  gap: 10px;
}

.theme-panel-head,
.theme-card {
  padding: 14px 16px;
  border-radius: 18px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel-soft) 96%, var(--surface-tint)), var(--panel-soft));
  border: 1px solid var(--border);
}

.theme-panel-kicker,
.theme-label {
  margin: 0;
  color: var(--accent);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.theme-panel-copy {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.92rem;
}

.install-card {
  align-content: start;
}

.install-btn {
  justify-self: start;
  padding: 10px 14px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--panel-deep) 84%, var(--accent-soft));
  border: 1px solid color-mix(in srgb, var(--border) 78%, var(--accent) 22%);
  color: var(--text);
}

.install-btn:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--border-strong) 62%, var(--accent) 38%);
  box-shadow: 0 12px 30px color-mix(in srgb, var(--theme-soft) 20%, transparent);
}

.theme-group-colors {
  justify-items: end;
}

.mode-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  padding: 6px;
  background: var(--panel-deep);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.theme-toggle,
.attempt-tab,
.mode-btn,
.primary-btn,
.ghost-btn,
.delete-btn,
.subtle-btn {
  border: 0;
  border-radius: 12px;
  font: inherit;
}

.theme-toggle {
  padding: 10px 14px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.theme-toggle.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.theme-swatches {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
}

.theme-swatch {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  min-width: 38px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel-2);
  color: transparent;
  cursor: pointer;
}

.theme-swatch span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  color: var(--accent-contrast);
  opacity: 0;
}

.theme-swatch::before {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 999px;
  background: var(--swatch, var(--accent));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 4px 14px color-mix(in srgb, var(--swatch) 26%, transparent);
}

.theme-swatch.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.theme-swatch.active span {
  opacity: 1;
}

.theme-swatch[data-theme-option="red"] { --swatch: #b06d69; }
.theme-swatch[data-theme-option="orange"] { --swatch: #c18a5f; }
.theme-swatch[data-theme-option="yellow"] { --swatch: #c0a164; }
.theme-swatch[data-theme-option="green"] { --swatch: #79b59b; }
.theme-swatch[data-theme-option="cyan"] { --swatch: #70aba9; }
.theme-swatch[data-theme-option="blue"] { --swatch: #6d92c1; }
.theme-swatch[data-theme-option="purple"] { --swatch: #8c79b3; }
.theme-swatch[data-theme-option="graphite"] { --swatch: #8f989f; }

.chart-panel,
.input-panel,
.history-panel,
.stat-card,
.trash-panel {
  padding: 22px;
}

.chart-panel {
  margin-bottom: 14px;
}

.chart-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-end;
  margin-bottom: 20px;
}

.trend-chart {
  display: block;
  width: 100%;
  height: 260px;
  overflow: visible;
}

.chart-empty,
.empty-state {
  padding: 32px 0 8px;
  color: var(--muted);
  text-align: center;
}

.results-bar {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.stat-card strong {
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  font-weight: 500;
  letter-spacing: -0.03em;
}

.stat-card p,
.record-values p,
.preview-card p {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 0.84rem;
}

.attempt-bar {
  display: grid;
  gap: 10px;
  justify-items: start;
}

.attempt-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  width: 100%;
  padding: 6px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.attempt-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.attempt-tab {
  min-width: 108px;
  padding: 10px 14px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.attempt-tab.active {
  background: var(--accent);
  color: var(--accent-contrast);
}

.record-form {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.92fr);
  gap: 18px;
  align-items: stretch;
}

.editor-panel,
.control-panel {
  display: grid;
  gap: 14px;
  min-width: 0;
  padding: 18px;
  border-radius: 20px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
}

.section-label {
  color: var(--accent);
  font-size: 0.73rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  color: var(--muted);
  font-size: 0.88rem;
}

.text-field {
  height: 100%;
}

.time-block {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.018);
  border: 1px solid var(--border);
}

.time-mode-switch,
.mode-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  padding: 6px;
  border-radius: 14px;
}

.time-mode-switch {
  background: var(--panel-deep);
  border: 1px solid var(--border);
}

.mode-btn {
  padding: 11px 12px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.mode-btn.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.timer-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--panel-deep);
  border: 1px solid var(--border);
}

.timer-readout p {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 0.84rem;
}

.timer-readout strong {
  font-size: 2rem;
  font-weight: 500;
}

.timer-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.timer-btn {
  padding: 9px 12px;
}

.manual-time-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 14px 15px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
  outline: none;
}

.field textarea {
  resize: vertical;
  min-height: 340px;
  line-height: 1.7;
  padding: 20px 20px 22px;
  background: linear-gradient(180deg, var(--panel-2), color-mix(in srgb, var(--panel-2) 86%, var(--accent-soft)));
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.field input.is-readonly {
  color: var(--muted);
  background: var(--panel-deep);
}

.field select option {
  background: var(--panel-deep);
  color: var(--text);
}

.preview-card {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 16px;
  border-radius: 18px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface-tint-strong) 80%, var(--accent-soft)), rgba(255, 255, 255, 0.02));
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
}

.preview-card strong {
  font-size: 1.45rem;
  font-weight: 500;
}

.primary-btn,
.ghost-btn,
.delete-btn,
.subtle-btn,
.theme-toggle,
.theme-swatch,
.attempt-tab,
.mode-btn,
.settings-trigger {
  transition: background-color 0.28s ease, color 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease, opacity 0.18s ease;
}

.primary-btn,
.ghost-btn,
.delete-btn,
.subtle-btn {
  cursor: pointer;
}

.primary-btn {
  width: 100%;
  padding: 15px 18px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 500;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.primary-btn:disabled,
.subtle-btn:disabled,
.mode-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.history-header,
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-end;
  margin-bottom: 16px;
}

.history-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.backup-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.trend-area {
  fill: color-mix(in srgb, var(--accent) 18%, transparent);
}

.trend-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.trend-dot {
  fill: var(--accent);
}

.trend-label,
.trend-axis {
  fill: var(--muted);
  font-size: 12px;
  text-anchor: middle;
}

.undo-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--muted);
  border: 1px solid var(--border);
}

.ghost-btn {
  padding: 8px 12px;
  background: transparent;
  color: var(--accent-strong);
}

.subtle-btn {
  padding: 6px 8px;
  background: transparent;
  color: var(--muted);
  font-size: 0.84rem;
}

.subtle-btn:hover {
  color: var(--text);
}

.hidden-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.record-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.record-item {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr auto;
  gap: 14px;
  align-items: center;
  padding: 16px;
  border-radius: 18px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
}

.trash-panel {
  margin-top: 18px;
  overflow: hidden;
}

.trash-item {
  background: color-mix(in srgb, var(--panel-soft) 88%, rgba(255, 141, 141, 0.04));
}

.trash-summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  cursor: pointer;
}

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

.trash-summary h2 {
  margin: 0;
}

.trash-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  padding: 7px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel-soft) 84%, var(--theme-soft));
  border: 1px solid color-mix(in srgb, var(--border) 82%, var(--theme-accent) 18%);
  color: var(--text-strong);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.trash-body {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
}

.trash-copy {
  color: var(--text-soft);
  font-size: 0.92rem;
}

.danger-btn {
  color: color-mix(in srgb, var(--text) 86%, #c98383);
}

.danger-btn:hover {
  border-color: color-mix(in srgb, var(--border-strong) 72%, #b15e5e);
  background: color-mix(in srgb, var(--panel-soft) 78%, rgba(177, 94, 94, 0.1));
}

.restore-btn {
  white-space: nowrap;
}

.record-meta {
  display: grid;
  gap: 8px;
}

.attempt-badge {
  display: inline-flex;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.88rem;
  font-weight: 500;
}

.record-time {
  color: var(--muted);
  font-size: 0.9rem;
}

.record-values {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.record-values strong {
  font-size: 1.1rem;
  font-weight: 500;
}

.delete-btn {
  padding: 10px 14px;
  background: rgba(255, 141, 141, 0.1);
  color: var(--danger);
}

.time-field-muted span {
  opacity: 0.72;
}

.hidden {
  display: none;
}

@media (max-width: 980px) {
  .hero {
    flex-direction: column;
  }

  .hero-side {
    width: 100%;
    justify-items: start;
  }

  .theme-panel {
    position: static;
    width: 100%;
    margin-top: 10px;
    grid-template-columns: 1fr;
  }

  .theme-swatches {
    grid-template-columns: repeat(8, minmax(36px, 44px));
    justify-content: flex-start;
  }

  .record-form,
  .stats-grid,
  .record-item,
  .record-values {
    grid-template-columns: 1fr;
  }

  .field textarea {
    min-height: 240px;
  }

  .timer-panel {
    flex-direction: column;
    align-items: flex-start;
  }

  .manual-time-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 20px, 1100px);
    padding: 28px 0 42px;
  }

  .theme-panel {
    padding: 16px;
  }

  .mode-switch,
  .theme-swatches,
  .time-mode-switch,
  .timer-actions {
    width: 100%;
  }

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

  .attempt-tab {
    min-width: 0;
  }

  .chart-head,
  .history-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .history-actions {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }

  .editor-panel,
  .control-panel,
  .chart-panel,
  .history-panel,
  .stat-card {
    padding: 16px;
  }

  .preview-card {
    grid-template-columns: 1fr;
  }

  .timer-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .status-toast {
    right: 12px;
    bottom: 12px;
  }

  .update-toast {
    right: 12px;
    bottom: 60px;
    left: 12px;
    justify-content: space-between;
  }
}