:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-dim: #0ea5e9;
  --danger: #f87171;
  --radius: 12px;
  --radius-sm: 8px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --cell-min: 44px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  padding: calc(12px + var(--safe-top)) 12px calc(16px + var(--safe-bottom));
  line-height: 1.4;
}

.app {
  max-width: 480px;
  margin: 0 auto;
}

.header {
  margin-bottom: 16px;
}

.header__title {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header__subtitle {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.toolbar__month {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: capitalize;
  flex: 1;
  text-align: center;
}

.weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.day-cell {
  position: relative;
  isolation: isolate;
  aspect-ratio: 1;
  min-height: var(--cell-min);
  border: none;
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  padding: 6px 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 4px;
  cursor: pointer;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.1s;
}

.day-cell:active {
  transform: scale(0.97);
}

.day-cell:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Dny mimo měsíc: tmavší podklad, text slabší (ne průhlednost celé buňky) */
.day-cell--outside {
  background: color-mix(in srgb, var(--surface) 68%, var(--bg));
  color: color-mix(in srgb, var(--text) 72%, var(--bg));
}

.day-cell--outside .day-cell__num,
.day-cell--outside .day-cell__dots {
  opacity: 0.88;
}

/* Interval bolesti (mint) – pouze spodní vrstva, nic nepřekrývá plnou výplň stupně */
.day-cell__underlay {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 0;
}

.day-cell__pain {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 1;
  transition: background 0.15s ease;
}

.day-cell--today::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 2px var(--accent);
  pointer-events: none;
  z-index: 2;
}

.day-cell--pain-span:not(.day-cell--pain-span-start):not(.day-cell--pain-span-end) .day-cell__underlay {
  background: linear-gradient(0deg, rgba(167, 243, 208, 0.42), rgba(167, 243, 208, 0.42));
}

.day-cell--pain-span.day-cell--pain-span-start:not(.day-cell--pain-span-end) .day-cell__underlay {
  background: linear-gradient(
    90deg,
    var(--surface) 0%,
    var(--surface-2) 30%,
    rgba(167, 243, 208, 0.5) 72%,
    rgba(167, 243, 208, 0.42) 100%
  );
}

.day-cell--pain-span.day-cell--pain-span-end:not(.day-cell--pain-span-start) .day-cell__underlay {
  background: linear-gradient(
    270deg,
    var(--surface) 0%,
    var(--surface-2) 30%,
    rgba(167, 243, 208, 0.5) 72%,
    rgba(167, 243, 208, 0.42) 100%
  );
}

.day-cell--pain-span.day-cell--pain-span-start.day-cell--pain-span-end .day-cell__underlay {
  background: linear-gradient(
    90deg,
    var(--surface) 0%,
    var(--surface-2) 22%,
    rgba(167, 243, 208, 0.4) 42%,
    rgba(167, 243, 208, 0.4) 58%,
    var(--surface-2) 78%,
    var(--surface) 100%
  );
}

.day-cell--outside.day-cell--pain-span:not(.day-cell--pain-span-start):not(.day-cell--pain-span-end) .day-cell__underlay {
  background: linear-gradient(0deg, rgba(167, 243, 208, 0.22), rgba(167, 243, 208, 0.22));
}

.day-cell--outside.day-cell--pain-span.day-cell--pain-span-start:not(.day-cell--pain-span-end) .day-cell__underlay {
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--surface) 68%, var(--bg)) 0%,
    color-mix(in srgb, var(--surface-2) 68%, var(--bg)) 32%,
    rgba(167, 243, 208, 0.22) 100%
  );
}

.day-cell--outside.day-cell--pain-span.day-cell--pain-span-end:not(.day-cell--pain-span-start) .day-cell__underlay {
  background: linear-gradient(
    270deg,
    color-mix(in srgb, var(--surface) 68%, var(--bg)) 0%,
    color-mix(in srgb, var(--surface-2) 68%, var(--bg)) 32%,
    rgba(167, 243, 208, 0.22) 100%
  );
}

.day-cell--outside.day-cell--pain-span.day-cell--pain-span-start.day-cell--pain-span-end .day-cell__underlay {
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--surface) 68%, var(--bg)) 0%,
    color-mix(in srgb, var(--surface-2) 68%, var(--bg)) 24%,
    rgba(167, 243, 208, 0.16) 42%,
    rgba(167, 243, 208, 0.16) 58%,
    color-mix(in srgb, var(--surface-2) 68%, var(--bg)) 76%,
    color-mix(in srgb, var(--surface) 68%, var(--bg)) 100%
  );
}

.day-cell__num {
  position: relative;
  z-index: 3;
  font-size: 0.85rem;
  font-weight: 600;
}

.day-cell__dots {
  position: relative;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  justify-content: center;
  max-width: 100%;
  min-height: 14px;
}

.day-cell__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--surface);
  box-shadow: 0 0 0 1px var(--surface-2);
}

.btn {
  min-height: var(--cell-min);
  min-width: var(--cell-min);
  padding: 0 14px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn--ghost {
  background: transparent;
  color: var(--accent);
  font-size: 1.5rem;
  line-height: 1;
}

.btn--primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-dim));
  color: #0f172a;
}

.btn--block {
  width: 100%;
  margin-top: 12px;
}

.sheet__flash {
  margin: 10px 0 0;
  font-size: 0.85rem;
  color: var(--danger);
  line-height: 1.35;
}

.sheet__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
}

.sheet__actions > .btn {
  width: 100%;
}

.btn--pain-start {
  background: #f5a8a8;
  color: #5c1f1f;
  border: 1px solid rgba(92, 31, 31, 0.2);
}

.btn--pain-end {
  background: #a8e6cf;
  color: #1e4d3a;
  border: 1px solid rgba(30, 77, 58, 0.2);
}

.btn--state {
  background: #94a3b8;
  color: #0f172a;
  border: 1px solid rgba(15, 23, 42, 0.15);
}

.btn--close {
  min-width: 40px;
  min-height: 40px;
  background: var(--surface-2);
  color: var(--text);
  font-size: 1.4rem;
  line-height: 1;
  border-radius: 50%;
}

.btn--danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.sheet--endflow {
  height: 100dvh;
  max-height: 100dvh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 0;
  padding-top: calc(8px + env(safe-area-inset-top, 0px));
}

.sheet.sheet--endflow > .sheet__handle,
.sheet.sheet--endflow > .sheet__head,
.sheet.sheet--endflow > #endFlowContextLabel {
  flex-shrink: 0;
}

/* Krok potvrzení: pole scrollovat, tlačítka vždy vidět dole */
.sheet.sheet--endflow > #endFlowStepConfirm {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.endflow-confirm__scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 4px;
}

.sheet.sheet--endflow #endFlowStepConfirm .sheet__actions--endconfirm {
  flex-shrink: 0;
  margin-top: 0;
  padding-top: 12px;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  background: var(--surface);
}

.endflow__context {
  margin: 0 0 12px;
  font-size: 0.9rem;
  color: var(--text);
}

.endflow__context--muted {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.endflow__hint {
  margin: 0 0 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.endflow__summary {
  margin: 0 0 8px;
  font-size: 0.95rem;
  line-height: 1.45;
  white-space: pre-wrap;
}

.sheet.sheet--endflow > #endFlowStepPick {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  overflow: visible;
  min-height: 0;
}

.sheet.sheet--endflow > #endFlowStepPick .entry-list--openpick {
  flex: 0 0 auto;
  min-height: 0;
  overflow-y: auto;
}

/* výchozí před výpočtem v JS; skutečná max výška = min(obsah, strop) */
.entry-list--openpick {
  max-height: 45dvh;
}

.sheet__actions--endconfirm {
  margin-top: 0;
}

.btn--text {
  background: transparent;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  min-height: 44px;
  width: 100%;
}

.sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  max-height: min(88dvh, 640px);
  background: var(--surface);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 8px 16px calc(20px + var(--safe-bottom));
  z-index: 11;
  transform: translateY(100%);
  transition: transform 0.25s ease;
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.35);
}

.sheet.is-open {
  transform: translateY(0);
}

/* Průvodce „Konec bolesti“: pozdější .sheet/.overlay by jinak přepsaly z-index z .sheet--endflow */
.overlay.overlay--endflow {
  z-index: 30;
}

.sheet.sheet--endflow {
  z-index: 31;
}

.sheet__handle {
  width: 40px;
  height: 4px;
  background: var(--surface-2);
  border-radius: 2px;
  margin: 0 auto 12px;
}

.sheet__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.sheet__title {
  margin: 0;
  font-size: 1.15rem;
  text-transform: capitalize;
}

.entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 42dvh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.entry-card {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 8px;
  cursor: pointer;
  border: 1px solid transparent;
}

.entry-card:active {
  border-color: var(--accent);
}

.entry-card.entry-card--endflow-preferred {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent-dim);
}

.entry-card__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.entry-card__type {
  font-weight: 600;
}

.entry-card__scale {
  font-size: 0.85rem;
  color: var(--accent);
  white-space: nowrap;
}

.entry-card__meta {
  margin: 6px 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.entry-list__empty {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 16px 0;
  text-align: center;
}

.sheet--form .form {
  padding-bottom: 8px;
}

/* Nový začátek bolesti: datum/čas konce vůbec nezobrazovat */
#entryForm[data-flow="new-start"] #fieldEndWrap {
  display: none !important;
}

/* Stav: zobrazit datum (stavu); řádek času konce skrýt – čas je v poli „Čas stavu“ */
#entryForm[data-flow="state"] #fieldEndWrap {
  display: flex !important;
}

#entryForm[data-flow="state"] #fieldEndTimeRow {
  display: none !important;
}

.field-end-wrap {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 4px;
  padding-top: 12px;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
}

.form .field {
  display: block;
  margin-bottom: 16px;
}

.field__label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.field input[type="text"],
.field input[type="time"],
.field input[type="date"],
.field select {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--surface-2);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

.field--row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field--inline {
  margin-bottom: 0;
}

.scale-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.scale-row input[type="range"] {
  flex: 1;
  height: 8px;
  accent-color: var(--accent);
}

.scale-row__out {
  min-width: 2ch;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.form__error {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0 0 12px;
}

.form__actions {
  display: flex;
  flex-direction: row;
  gap: 8px;
  margin-top: 8px;
}

.form__actions > .btn {
  flex: 1;
  min-width: 0;
}

@media (min-width: 400px) {
  .day-cell__num {
    font-size: 0.95rem;
  }
}