:root {
  color-scheme: dark;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
  --bg: #1f1f1f;
  --panel: #2c2c2c;
  --panel-2: #262626;
  --text: #e6e6e6;
  --muted: #bdbdbd;
  --border: #ffffff22;
  --ring: #ffffff22;
  --accent: #4285f4;
  --accent-soft: rgba(66, 133, 244, .14);
  --danger: #ea4335;
  --utility-rail-width: 42px;
  --page-edge: 12px;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f5f5;
  --panel: #ffffff;
  --panel-2: #f1f3f4;
  --text: #202124;
  --muted: #5f6368;
  --border: #dadce0;
  --ring: #dadce0;
  --accent: #4285f4;
  --accent-soft: rgba(66, 133, 244, .11);
  --danger: #d93025;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  min-height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 10% -10%, color-mix(in srgb, var(--panel) 70%, transparent), transparent),
    radial-gradient(1200px 600px at 110% 0%, color-mix(in srgb, var(--panel-2) 70%, transparent), transparent),
    var(--bg);
  color: var(--text);
  font-size: 11px;
  line-height: 1.35;
  transition: background .2s ease, color .2s ease;
}
button, input, select { font: inherit; }

/* De zijbalk komt uit ../utility-rail.css. Op desktop corrigeren we hier
   uitsluitend de visuele schaal van /ademhaling/ naar de feitelijke /main-rail. */
@media (min-width: 761px) {
  body > .utility-rail {
    top: 50px !important;
    bottom: 30px !important;
    left: 12px !important;
    width: 38px !important;
    min-width: 38px !important;
    max-width: 38px !important;
    padding: 6px 3px !important;
    gap: 4px !important;
  }

  body > .utility-rail > .rail-button {
    width: 30px !important;
    min-width: 30px !important;
    max-width: 30px !important;
    height: 34px !important;
    min-height: 34px !important;
    max-height: 34px !important;
    flex: 0 0 34px !important;
  }

  body > .utility-rail .rail-icon {
    width: 16px !important;
    min-width: 16px !important;
    max-width: 16px !important;
    height: 16px !important;
    min-height: 16px !important;
    max-height: 16px !important;
    flex-basis: 16px !important;
  }

  body > .utility-rail > .rail-separator {
    width: 22px !important;
  }
}

.floating-edit {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 110;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--ring) 85%, transparent);
  border-radius: 50%;
  background: color-mix(in srgb, var(--panel) 34%, transparent);
  color: var(--muted);
  opacity: .62;
  text-decoration: none;
  backdrop-filter: blur(8px);
  transition: opacity .15s ease, background .15s ease, transform .15s ease;
}
.floating-edit:hover,
.floating-edit:focus-visible { opacity: .95; background: color-mix(in srgb, var(--panel) 70%, transparent); outline: none; }
.floating-edit:active { transform: scale(.94); }

.app-shell {
  width: min(calc(100% - 76px), 980px);
  height: 100vh;
  margin-left: calc(var(--page-edge) + var(--utility-rail-width) + 10px);
  margin-right: auto;
  padding: 10px 0;
  display: grid;
  place-items: center;
}
.tool-card {
  width: 100%;
  max-height: calc(100vh - 20px);
  overflow: hidden;
  background: color-mix(in srgb, var(--panel) 94%, var(--bg));
  border: 1px solid var(--border);
  border-radius: 15px;
  padding: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .22);
}
:root[data-theme="light"] .tool-card { box-shadow: 0 6px 20px rgba(31, 41, 51, .08); }
.tool-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.tool-header h1 { margin: 1px 0 0; font-size: 16px; letter-spacing: .04em; text-transform: uppercase; }
.eyebrow { margin: 0; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.sound-toggle { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); white-space: nowrap; cursor: pointer; }
.sound-toggle input { accent-color: var(--accent); }

.breathing-stage { position: relative; height: clamp(220px, 35vh, 300px); min-height: 200px; margin: 7px 0; display: grid; place-items: center; }
.phase-copy { position: absolute; inset: 0; z-index: 2; display: grid; place-items: center; text-align: center; pointer-events: none; }
.phase-label { position: absolute; top: 3px; left: 50%; transform: translateX(-50%); margin: 0; min-height: 1.3em; color: var(--text); font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
.phase-time { margin: 0; color: #ffffff; font-size: 16px; font-weight: 800; line-height: 1; font-variant-numeric: tabular-nums; text-shadow: 0 1px 3px rgba(0, 0, 0, .38); }
.ball-space { width: 100%; height: 100%; display: grid; place-items: center; overflow: hidden; }
.breathing-ball {
  width: clamp(84px, 11vh, 104px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 28%, rgba(255, 255, 255, .34), transparent 26%),
    linear-gradient(145deg, #4285f4 0%, #4285f4 58%, #34a853 76%, #fbbc05 89%, #ea4335 100%);
  border: 1px solid rgba(255, 255, 255, .24);
  transform: scale(1);
  transform-origin: center;
  will-change: transform;
  box-shadow: 0 8px 24px rgba(66, 133, 244, .24);
}

.settings { display: grid; gap: 6px; }
.preset-row { display: grid; grid-template-columns: minmax(250px, 340px) minmax(0, 1fr); gap: 8px; align-items: end; }
.preset-field { display: grid; gap: 3px; }
.preset-field > span,
legend,
.repetitions-field > span { margin-bottom: 3px; color: var(--muted); font-weight: 700; }
.preset-note { min-width: 0; min-height: 34px; margin: 0; padding: 7px 9px; display: flex; align-items: center; border: 1px solid var(--border); border-radius: 9px; background: color-mix(in srgb, var(--panel-2) 68%, var(--bg)); color: var(--muted); font-size: 10px; }
select,
input[type="number"] { width: 100%; height: 34px; border: 1px solid var(--border); border-radius: 9px; padding: 4px 7px; background: color-mix(in srgb, var(--panel-2) 84%, var(--bg)); color: var(--text); }
select { padding-right: 28px; }
.settings-row { display: grid; grid-template-columns: minmax(0, 1fr) 120px; gap: 8px; align-items: end; }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.phase-inputs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
label { color: var(--muted); font-size: 10px; }
.phase-inputs label,
.repetitions-field { display: grid; gap: 3px; }
input[type="number"] { text-align: center; font-size: 12px; }
input:focus-visible,
select:focus-visible,
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
input:disabled,
select:disabled { opacity: .55; cursor: not-allowed; }
.validation { min-height: 14px; margin: 0; color: var(--danger); font-size: 10px; }
.summary-grid { display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; border: 1px solid var(--border); border-radius: 10px; }
.summary-grid > div { min-width: 0; padding: 6px 8px; background: color-mix(in srgb, var(--panel-2) 78%, var(--bg)); }
.summary-grid > div + div { border-left: 1px solid var(--border); }
.summary-grid span { display: block; color: var(--muted); font-size: 9px; }
.summary-grid strong { display: block; margin-top: 1px; font-size: 12px; font-variant-numeric: tabular-nums; }
.actions { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 6px; }
button { height: 34px; border: 1px solid var(--border); border-radius: 9px; background: color-mix(in srgb, var(--panel-2) 84%, var(--bg)); color: var(--text); cursor: pointer; font-weight: 700; }
button:hover:not(:disabled) { border-color: color-mix(in srgb, var(--text) 20%, var(--border)); background: color-mix(in srgb, var(--panel-2) 70%, var(--panel)); }
button.primary { border-color: var(--accent); background: var(--accent-soft); color: var(--text); }
button:disabled { opacity: .4; cursor: not-allowed; }

/* Desktop: bediening links onder elkaar, ademanimatie ruim rechts. */
@media (min-width: 761px) {
  .tool-card {
    min-height: min(620px, calc(100vh - 20px));
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    grid-template-rows: auto minmax(0, 1fr);
    column-gap: 20px;
    align-items: stretch;
  }

  .tool-header {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .settings {
    grid-column: 1;
    grid-row: 2;
    align-self: center;
    width: 100%;
    gap: 9px;
    padding: 12px 0 4px;
  }

  .preset-row,
  .settings-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 9px;
    align-items: stretch;
  }

  .preset-field {
    grid-column: 1 !important;
  }

  .phase-inputs {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .phase-inputs label,
  .repetitions-field {
    grid-template-columns: 78px minmax(0, 1fr);
    align-items: center;
    gap: 8px;
  }

  .phase-inputs label > span,
  .repetitions-field > span {
    margin: 0;
  }

  .validation {
    min-height: 14px;
  }

  .summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .summary-grid > div + div {
    border-left: 1px solid var(--border);
  }

  .summary-grid > div:nth-child(3) {
    border-left: 0;
  }

  .summary-grid > div:nth-child(n+3) {
    border-top: 1px solid var(--border);
  }

  .actions {
    grid-template-columns: 1fr;
  }

  .breathing-stage {
    grid-column: 2;
    grid-row: 2;
    width: 100%;
    height: 100%;
    min-height: 0;
    max-height: none;
    margin: 0;
    align-self: stretch;
  }

  .phase-label {
    top: 28px;
    font-size: 15px;
  }

  .phase-time {
    font-size: 22px;
  }

  .breathing-ball {
    width: clamp(145px, 19vh, 190px);
  }
}

@media (max-width: 760px) {
  html,
  body { height: 100%; min-height: 100%; overflow: hidden; }
  body { padding: 0 0 52px; }

  .floating-edit { display: none; }

  .app-shell {
    width: calc(100% - 12px);
    height: calc(100vh - 52px);
    min-height: 0;
    margin: 0 auto;
    padding: 4px 0;
    display: block;
  }

  .tool-card {
    height: 100%;
    max-height: 100%;
    padding: 7px;
    border-radius: 12px;
    overflow: hidden;
  }

  .tool-header {
    min-height: 28px;
    gap: 8px;
    padding-bottom: 3px;
  }
  .tool-header h1 { font-size: 14px; }
  .sound-toggle { gap: 4px; font-size: 9px; }

  .breathing-stage {
    height: 27vh;
    min-height: 150px;
    max-height: 210px;
    margin: 2px 0 4px;
  }
  .phase-label { top: 1px; font-size: 11px; }
  .phase-time { font-size: 15px; }
  .breathing-ball { width: clamp(70px, 10vh, 88px); }

  .settings { gap: 4px; }
  .preset-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 5px;
  }
  .preset-field { gap: 1px; }
  .preset-field > span,
  legend,
  .repetitions-field > span { margin-bottom: 1px; font-size: 9px; }
  .preset-note {
    min-height: 30px;
    height: 30px;
    padding: 4px 6px;
    overflow: hidden;
    font-size: 8px;
    line-height: 1.15;
  }

  select,
  input[type="number"],
  button { height: 30px; }

  .settings-row {
    grid-template-columns: minmax(0, 1fr) 86px;
    gap: 5px;
  }
  .phase-inputs { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; }
  label { font-size: 9px; }
  input[type="number"] { font-size: 11px; }

  .validation {
    min-height: 10px;
    height: 10px;
    overflow: hidden;
    font-size: 8px;
    line-height: 1.1;
  }

  .summary-grid { grid-template-columns: repeat(4, 1fr); }
  .summary-grid > div { padding: 4px 3px; }
  .summary-grid > div + div { border-left: 1px solid var(--border); }
  .summary-grid > div:nth-child(n+3) { border-top: 0; }
  .summary-grid span { font-size: 7px; }
  .summary-grid strong { font-size: 10px; }

  .actions { gap: 4px; }
  .actions button { height: 30px; }
}

@media (max-width: 760px) and (max-height: 700px) {
  .app-shell { height: calc(100vh - 50px); }
  .tool-card { padding: 5px 6px; }
  .tool-header h1 { font-size: 13px; }
  .breathing-stage { height: 24vh; min-height: 125px; max-height: 165px; }
  .breathing-ball { width: 66px; }
  .preset-note { display: none; }
  .preset-row { grid-template-columns: 1fr; }
  .validation { display: none; }
  select,
  input[type="number"],
  button,
  .actions button { height: 28px; }
  .summary-grid > div { padding: 3px 2px; }
}

@media (max-height: 720px) and (min-width: 761px) {
  .breathing-stage { height: 190px; min-height: 180px; }
  .breathing-ball { width: 78px; }
  .tool-card { padding: 9px 11px; }
  .preset-note { min-height: 32px; padding-block: 5px; }
}

@media (prefers-reduced-motion: reduce) { .breathing-ball { will-change: auto; } }