:root {
  color-scheme: dark;
  --bg: #0d1117;
  --surface: #151a22;
  --surface-raised: #1b212b;
  --surface-soft: #11161d;
  --line: #2a323e;
  --line-strong: #3b4655;
  --text: #f2f5f8;
  --muted: #98a3b3;
  --subtle: #6f7a89;
  --accent: #54b7c5;
  --accent-strong: #2e8f9e;
  --danger: #d16c6c;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

body[data-theme="light"] {
  color-scheme: light;
  --bg: #f1f3f5;
  --surface: #ffffff;
  --surface-raised: #f7f8f9;
  --surface-soft: #eef1f3;
  --line: #d9dee4;
  --line-strong: #b7c0ca;
  --text: #17202a;
  --muted: #5e6977;
  --subtle: #7b8591;
  --accent: #237d89;
  --accent-strong: #176570;
  --danger: #a54545;
  --shadow: 0 16px 38px rgba(25, 34, 45, 0.1);
}

* { box-sizing: border-box; }

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

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  transition: background 160ms ease, color 160ms ease;
}

button, input, select, a { font: inherit; }
button, a, select { -webkit-tap-highlight-color: transparent; }

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 35%, transparent);
  outline-offset: 2px;
}

.tool-shell {
  width: min(1480px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 28px;
}

.app-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.brand-block { display: flex; align-items: center; gap: 15px; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: block;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background:
    linear-gradient(90deg, transparent 8px, var(--accent) 8px 10px, transparent 10px 18px, var(--accent) 18px 20px, transparent 20px 28px, var(--accent) 28px 30px, transparent 30px),
    var(--surface);
}

.product-label,
.brand-block h1 { margin: 0; }
.product-label {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.brand-block h1 { margin-top: 3px; font-size: 1.75rem; letter-spacing: -0.035em; }

.header-actions { display: flex; align-items: center; gap: 10px; }
.theme-control { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 0.82rem; }
.theme-control select,
.home-link {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}
.theme-control select { padding: 0 34px 0 12px; }
.home-link { display: inline-flex; align-items: center; padding: 0 14px; text-decoration: none; font-weight: 650; }
.home-link:hover { border-color: var(--line-strong); }

.mode-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 760px;
  padding: 4px;
  margin-bottom: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-soft);
}

.mode-button {
  min-height: 42px;
  padding: 0 14px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font-weight: 680;
  cursor: pointer;
}
.mode-button:hover { color: var(--text); }
.mode-button.is-active {
  background: var(--surface-raised);
  color: var(--text);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.16), inset 0 0 0 1px var(--line);
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(300px, 350px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.tool-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.tool-controls { padding: 22px; }
.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.section-heading p { margin: 0; font-size: 0.76rem; font-weight: 780; letter-spacing: 0.1em; text-transform: uppercase; }
.feedback-label { color: var(--muted); font-size: 0.78rem; text-align: right; }

.mode-panel { display: none; padding: 22px 0; border-bottom: 1px solid var(--line); }
.mode-panel.is-active { display: block; }
.panel-copy { display: grid; gap: 7px; }
.panel-copy strong { font-size: 1.08rem; }
.panel-copy span { color: var(--muted); font-size: 0.9rem; line-height: 1.55; }

.field { display: grid; gap: 8px; }
.field span,
.status-tile span,
.display-meta span,
.support-strip span,
.display-caption {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.field input {
  width: 100%;
  min-height: 48px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
  color: var(--text);
}
.field input:focus { border-color: var(--accent); }

.preset-grid,
.panel-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.preset-grid { margin-top: 12px; }
.panel-actions { margin-top: 16px; }

.tool-controls button,
.display-icon-button {
  min-height: 42px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-raised);
  color: var(--text);
  font-weight: 680;
  cursor: pointer;
}
.tool-controls button:hover,
.display-icon-button:hover { border-color: var(--line-strong); }
.tool-controls .primary-action {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
  color: #fff;
}
.tool-controls .danger-action { color: var(--danger); }

.status-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); gap: 1px; margin-top: 18px; background: var(--line); border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.status-tile { min-width: 0; padding: 13px; background: var(--surface-soft); }
.status-tile strong { display: block; margin-top: 7px; font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.is-hidden { display: none !important; }

.tool-display { min-width: 0; padding: 24px; }
.display-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 46px; }
.display-lead { display: flex; align-items: center; gap: 13px; }
.display-badge {
  min-width: 72px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  color: var(--accent);
  font: 750 0.75rem/1 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.08em;
  text-align: center;
}
.display-subtitle { color: var(--muted); font-size: 0.9rem; }
.display-icon-button { display: inline-flex; align-items: center; gap: 8px; min-height: 38px; }
.display-icon-button svg { width: 18px; height: 18px; }
.display-icon-button span { font-size: 0.82rem; }
.display-icon-button[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }

.clock-wrapper {
  position: relative;
  min-height: 330px;
  display: grid;
  place-items: center;
  margin: 18px 0 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-soft);
}
.clock-glow { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 40px 40px; opacity: 0.28; }
.clock-display {
  position: relative;
  z-index: 1;
  max-width: 100%;
  padding: 20px;
  color: var(--text);
  font: 650 clamp(2.55rem, 6vw, 6.2rem)/1 "SFMono-Regular", Consolas, monospace;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.045em;
  white-space: nowrap;
  text-align: center;
}

.support-strip { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 48px; padding: 0 15px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-raised); }
.support-strip strong { font: 650 0.94rem ui-monospace, SFMono-Regular, Consolas, monospace; font-variant-numeric: tabular-nums; }

.display-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 14px; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; background: var(--line); }
.display-meta div { min-width: 0; padding: 15px; background: var(--surface); }
.display-meta strong { display: block; margin-top: 7px; font: 620 0.9rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }

.records-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(220px, 0.6fr); gap: 12px; margin-top: 14px; }
.lap-card, .note-card { min-height: 120px; padding: 17px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface-raised); }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.panel-head h2 { margin: 0; font-size: 0.95rem; }
.panel-head span { color: var(--muted); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.lap-list { max-height: 145px; margin: 14px 0 0; padding-left: 24px; overflow: auto; color: var(--muted); font-size: 0.86rem; }
.lap-list li + li { margin-top: 8px; }
.note-card p { margin: 14px 0 0; color: var(--muted); font-size: 0.86rem; line-height: 1.55; }

body.cinema-mode .app-header,
body.cinema-mode .mode-grid,
body.cinema-mode .tool-controls,
body.cinema-mode .records-grid { display: none; }
body.cinema-mode .tool-shell { width: 100%; padding: 18px; }
body.cinema-mode .workspace-grid { display: block; }
body.cinema-mode .tool-display { min-height: calc(100vh - 36px); display: flex; flex-direction: column; }
body.cinema-mode .clock-wrapper { flex: 1; min-height: 62vh; }
body.cinema-mode .clock-display { font-size: clamp(4rem, 10vw, 10rem); }

@media (max-width: 900px) {
  .workspace-grid { grid-template-columns: 1fr; }
  .clock-display { font-size: clamp(2.2rem, 10vw, 5rem); }
}

@media (max-width: 620px) {
  .tool-shell { padding: 14px; }
  .app-header { align-items: flex-start; }
  .header-actions { flex-direction: column; align-items: stretch; }
  .theme-control { justify-content: space-between; }
  .mode-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tool-controls, .tool-display { padding: 17px; }
  .status-grid, .display-meta, .records-grid { grid-template-columns: 1fr; }
  .clock-wrapper { min-height: 245px; }
  .clock-display { font-size: clamp(1.85rem, 10vw, 3.15rem); padding-inline: 8px; }
  .display-icon-button span { display: none; }
  .support-strip { align-items: flex-start; flex-direction: column; padding-block: 11px; }
}

@media (prefers-reduced-motion: reduce) { * { transition-duration: 0.01ms !important; } }