/* Nenne - style.css
   Scandinavian flat design. Thin borders, no heavy shadows, calm 0.3s transitions. */

/* Animatable gradient colours (falls back to an instant change where unsupported) */
@property --bg-a { syntax: "<color>"; inherits: true; initial-value: #dcebfa; }
@property --bg-b { syntax: "<color>"; inherits: true; initial-value: #f3ece1; }

:root {
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --time: 0.3s;
  --radius: 14px;
  --radius-small: 10px;
  --font: "Inter", "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ---------- Theme colours (day / night) ---------- */
html[data-theme="day"] {
  color-scheme: light;
  --surface: #ffffff;
  --surface-soft: #f3f5f7;
  --text: #1f2933;
  --muted: #4a5563;
  --border: #c3cbd4;
  --accent: #2f5d8a;
  --on-accent: #ffffff;
  --warn: #8a4b00;
  --danger: #9b1c1c;
  --scrim: rgba(31, 41, 51, 0.45);
  --glow: rgba(107, 79, 168, 0.35);
}
html[data-theme="night"] {
  color-scheme: dark;
  --surface: #1a2333;
  --surface-soft: #222d42;
  --text: #e9edf3;
  --muted: #b6c0cf;
  --border: #3b4960;
  --accent: #9cc1ee;
  --on-accent: #0f1724;
  --warn: #f0c27a;
  --danger: #ff9d9d;
  --scrim: rgba(5, 9, 16, 0.65);
  --glow: rgba(183, 164, 239, 0.35);
}

/* ---------- Background gradients: time of day x nap phase ---------- */
html[data-theme="day"][data-phase="calm"]    { --bg-a: #dcebfa; --bg-b: #f3ece1; }
html[data-theme="day"][data-phase="prepare"] { --bg-a: #fce3bf; --bg-b: #f8cdb4; }
html[data-theme="day"][data-phase="soothe"]  { --bg-a: #dad3f0; --bg-b: #b9a9dc; }
html[data-theme="night"][data-phase="calm"]    { --bg-a: #0f1b2e; --bg-b: #1b2740; }
html[data-theme="night"][data-phase="prepare"] { --bg-a: #33283a; --bg-b: #46303a; }
html[data-theme="night"][data-phase="soothe"]  { --bg-a: #2a2447; --bg-b: #3b2f63; }

html[data-theme="day"][data-phase="calm"]    { --phase-color: #2f5d8a; }
html[data-theme="day"][data-phase="prepare"] { --phase-color: #8a4b00; }
html[data-theme="day"][data-phase="soothe"]  { --phase-color: #5b3fa0; }
html[data-theme="night"][data-phase="calm"]    { --phase-color: #9cc1ee; }
html[data-theme="night"][data-phase="prepare"] { --phase-color: #f0c27a; }
html[data-theme="night"][data-phase="soothe"]  { --phase-color: #c3b3f5; }

html {
  transition: --bg-a var(--time) var(--ease), --bg-b var(--time) var(--ease);
  -webkit-text-size-adjust: 100%;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-a), var(--bg-b)) fixed;
  background-color: var(--bg-a);
}
body.no-scroll { overflow: hidden; }

h1, h2, h3, h4, p { margin: 0; }
h2 { font-size: 1.125rem; font-weight: 600; letter-spacing: -0.01em; }
h3 { font-size: 1rem; font-weight: 600; }

.muted { color: var(--muted); font-size: 0.9375rem; }
.label { display: flex; align-items: center; gap: 0.375rem; color: var(--muted); font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
.aka { color: var(--muted); font-size: 0.8125rem; }
.strong-line { font-weight: 600; }

.sr-only {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 0.5rem; top: -4rem; z-index: 100;
  background: var(--accent); color: var(--on-accent);
  padding: 0.75rem 1rem; border-radius: var(--radius-small);
  transition: top var(--time) var(--ease);
}
.skip-link:focus { top: 0.5rem; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.icon { width: 24px; height: 24px; fill: currentColor; flex: none; }
.icon--small { width: 18px; height: 18px; }
.title-icon { display: flex; align-items: center; gap: 0.625rem; }

/* ---------- Header ---------- */
.app-header {
  position: sticky; top: 0; z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding-top: var(--safe-top);
  transition: background-color var(--time) var(--ease), border-color var(--time) var(--ease);
}
.app-header-inner {
  max-width: 34rem; margin: 0 auto; padding: 0.5rem 1rem;
  display: flex; align-items: center; gap: 0.75rem;
}
.header-info { display: flex; flex-direction: column; margin-right: auto; line-height: 1.2; }
.brand { font-weight: 700; letter-spacing: 0.04em; font-size: 0.9375rem; }
.clock { font-variant-numeric: tabular-nums; font-size: 1.375rem; font-weight: 300; }

.badge {
  display: inline-flex; align-items: center; min-height: 36px;
  padding: 0 0.875rem; border: 1px solid var(--border); border-radius: 999px;
  font-size: 0.875rem; font-weight: 600; background: var(--surface-soft);
}

.icon-button {
  width: 48px; height: 48px; display: inline-flex; align-items: center; justify-content: center;
  background: transparent; color: var(--text); border: 1px solid var(--border);
  border-radius: var(--radius-small); cursor: pointer;
  transition: background-color var(--time) var(--ease), transform var(--time) var(--ease);
}
.icon-button:hover { background: var(--surface-soft); }
.icon-button:active { transform: scale(0.96); }
.icon-button--small { border-color: transparent; }

/* ---------- Layout and cards ---------- */
.app {
  max-width: 34rem; margin: 0 auto;
  padding: 0.25rem 1rem calc(2.5rem + var(--safe-bottom));
  outline: none;
}
.card {
  position: relative;
  display: flex; flex-direction: column; gap: 1.25rem;
  margin-top: 1rem; padding: 1.25rem;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  transition: background-color var(--time) var(--ease), border-color var(--time) var(--ease);
}
.card--sleep { min-height: min(70dvh, 34rem); }
.card--feeding { min-height: min(60dvh, 32rem); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; min-height: 40px; }
.card-actions { margin-top: auto; display: flex; flex-direction: column; gap: 0.75rem; }

.tag {
  white-space: nowrap; flex: none;
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 0.2rem 0.6rem;
}

/* Soothing phase: gentle pulsing ring around the countdown card (flat, no blur) */
html[data-phase="soothe"] .card--sleep {
  border-color: var(--accent);
  animation: glow-pulse 3.2s ease-in-out infinite;
}
@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 0 0 transparent; }
  50% { box-shadow: 0 0 0 7px var(--glow); }
}

/* ---------- Sleep card ---------- */
.target-time {
  font-size: 1.75rem; font-weight: 600; font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em; margin-top: 0.125rem;
}
.countdown-block { display: flex; flex-direction: column; align-items: center; gap: 0.25rem; text-align: center; }
.countdown-block .label { justify-content: center; }
.countdown {
  display: flex; align-items: flex-end; justify-content: center; height: 1em;
  font-size: clamp(3rem, 15vw, 4rem); font-weight: 300; line-height: 1;
  letter-spacing: -0.02em; margin-top: 0.25rem;
  animation: breathe 6s ease-in-out infinite;
}
.countdown--small { justify-content: flex-start; font-size: 2.5rem; margin-top: 0; animation: none; }
@keyframes breathe { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.025); } }

/* Odometer digits */
.odo-digit {
  position: relative; display: block; width: 0.62em; height: 1em; overflow: hidden;
  font-variant-numeric: tabular-nums; text-align: center;
}
.odo-strip { display: block; transition: transform var(--time) var(--ease); }
.odo-strip span { display: block; height: 1em; line-height: 1; }
.odo-digit.odo-fade { animation: odo-fade var(--time) var(--ease); }
@keyframes odo-fade { from { opacity: 0; } to { opacity: 1; } }
.odo-sep { font-size: 0.34em; font-weight: 500; line-height: 1; padding: 0 0.2em 0.18em 0.04em; color: var(--muted); }

.chip-row { display: flex; align-items: center; justify-content: center; gap: 0.75rem; }
.chip-caption { color: var(--muted); font-size: 0.875rem; min-width: 5rem; text-align: center; }
.chip {
  min-width: 56px; min-height: 48px; padding: 0 1rem;
  font: inherit; font-weight: 600; font-variant-numeric: tabular-nums;
  background: var(--surface); color: var(--accent);
  border: 1px solid var(--accent); border-radius: 999px; cursor: pointer;
  transition: background-color var(--time) var(--ease), transform var(--time) var(--ease);
}
.chip:hover { background: var(--surface-soft); }
.chip:active { transform: scale(0.95); }

/* ---------- Buttons ---------- */
.btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.125rem;
  min-height: 56px; padding: 0.625rem 1.25rem;
  font: inherit; font-size: 1.0625rem; font-weight: 600; text-align: center;
  color: var(--accent); background: var(--surface);
  border: 1px solid var(--accent); border-radius: var(--radius-small);
  cursor: pointer; width: 100%;
  transition: background-color var(--time) var(--ease), color var(--time) var(--ease), transform var(--time) var(--ease);
}
.btn small { font-size: 0.8125rem; font-weight: 500; opacity: 0.95; }
.btn-main { display: inline-flex; align-items: center; justify-content: center; gap: 0.625rem; }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-secondary { background: var(--surface); color: var(--accent); }
.btn-secondary:hover { background: var(--surface-soft); }
.btn-danger { color: var(--danger); border-color: var(--danger); background: var(--surface); }
.btn-block { flex-direction: row; gap: 0.625rem; }

/* ---------- Feeding banner ---------- */
.banner {
  display: flex; flex-direction: column; gap: 0.375rem;
  padding: 0.875rem 1rem; border: 1px solid var(--border); border-left-width: 4px;
  border-radius: var(--radius-small); background: var(--surface-soft);
  transition: background-color var(--time) var(--ease), border-color var(--time) var(--ease);
}
.banner-tag {
  display: inline-flex; align-items: center; gap: 0.3rem;
  align-self: flex-start; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.125rem 0.5rem; border: 1px solid currentColor; border-radius: 999px;
}
.banner[data-tone="wait"] { border-left-color: var(--warn); }
.banner[data-tone="wait"] .banner-tag { color: var(--warn); }
.banner[data-tone="ready"] { border-left-color: var(--accent); }
.banner[data-tone="ready"] .banner-tag { color: var(--accent); }
.banner[data-tone="idle"] .banner-tag { color: var(--muted); }

/* ---------- Radio choices ---------- */
.choice-group { border: 0; padding: 0; margin: 0; min-width: 0; }
.choice-group legend { padding: 0; margin-bottom: 0.625rem; font-weight: 600; }
.choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.5rem; }
.choice-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.choice { position: relative; display: block; }
.choice input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.choice-face .icon { width: 22px; height: 22px; }
.choice-face {
  position: relative; display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 52px; padding: 0.375rem 0.75rem; text-align: center; font-weight: 500;
  border: 1px solid var(--border); border-radius: var(--radius-small); background: var(--surface);
  transition: background-color var(--time) var(--ease), color var(--time) var(--ease), border-color var(--time) var(--ease);
}
.choice input:checked + .choice-face {
  background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: 600;
}
.choice input:checked + .choice-face::before {
  content: ""; width: 6px; height: 11px; flex: none;
  border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg) translateY(-2px);
}
.choice input:focus-visible + .choice-face { outline: 3px solid var(--accent); outline-offset: 3px; }

/* ---------- Visual timers: pie dial (shrinks clockwise) and a draining bar ---------- */
@property --sweep { syntax: "<angle>"; inherits: false; initial-value: 0deg; }

.dial {
  --sweep: 0deg;
  --dial-color: var(--accent);
  position: relative; display: grid; place-items: center; flex: none;
  width: min(58vw, 12.5rem); aspect-ratio: 1; border-radius: 50%;
  border: 2px solid var(--dial-color);
  background: conic-gradient(var(--dial-color) 0deg var(--sweep), var(--surface-soft) var(--sweep) 360deg);
  transition: --sweep 1s linear, border-color var(--time) var(--ease);
}
.dial--small { width: 6.5rem; }
#sleepDial { --dial-color: var(--phase-color); }
.dial[data-state="wait"] { --dial-color: var(--warn); }
.dial-hub {
  display: grid; place-items: center; width: 34%; aspect-ratio: 1; border-radius: 50%;
  background: var(--surface); color: var(--text); border: 1px solid var(--border);
}
.dial-hub .icon { width: 56%; height: 56%; }

.drain {
  --dial-color: var(--accent);
  height: 14px; border: 1px solid var(--border); border-radius: 999px; overflow: hidden;
  background:
    repeating-linear-gradient(90deg, transparent 0, transparent calc(25% - 1px), var(--border) calc(25% - 1px), var(--border) 25%),
    var(--surface-soft);
}
.drain-fill { height: 100%; width: 0; background: var(--dial-color); border-radius: 999px; transition: width 1s linear, background-color var(--time) var(--ease); }
#sleepDrain { --dial-color: var(--phase-color); }
.drain[data-state="wait"] { --dial-color: var(--warn); }

.timer-hero { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.timer-hero .drain { width: 100%; }
.timer-row { display: flex; align-items: center; gap: 1rem; }
.timer-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.375rem; }
.safe-now { display: inline-flex; align-items: center; gap: 0.5rem; font-size: 1.75rem; font-weight: 600; color: var(--accent); }
.safe-now .icon { width: 32px; height: 32px; }

/* ---------- Info popover ---------- */
.popover {
  position: absolute; left: 0.75rem; right: 0.75rem; top: 4.25rem; z-index: 10;
  max-height: 70vh; overflow-y: auto;
  padding: 1rem; background: var(--surface); color: var(--text);
  border: 1px solid var(--accent); border-radius: var(--radius-small);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity var(--time) var(--ease), transform var(--time) var(--ease), visibility 0s linear var(--time);
}
.popover.is-open { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.popover h3 { margin-bottom: 0.5rem; }
.ref-list { list-style: none; padding: 0; margin: 0 0 1rem; display: flex; flex-direction: column; }
.ref-list li { display: flex; justify-content: space-between; gap: 1rem; padding: 0.5rem 0; border-bottom: 1px solid var(--border); font-size: 0.9375rem; }
.ref-list li span:last-child { text-align: right; font-weight: 600; }
.bullet-list { margin: 0 0 0.5rem; padding-left: 1.125rem; display: flex; flex-direction: column; gap: 0.375rem; font-size: 0.9375rem; }

/* ---------- Toast (top, so it never covers thumb-zone buttons) ---------- */
.toast {
  position: fixed; left: 50%; top: calc(4.5rem + var(--safe-top)); z-index: 60;
  max-width: min(30rem, calc(100vw - 2rem)); padding: 0.75rem 1rem;
  background: var(--text); color: var(--surface); border-radius: var(--radius-small);
  font-size: 0.9375rem; font-weight: 500; text-align: center;
  opacity: 0; visibility: hidden; transform: translate(-50%, -8px); pointer-events: none;
  transition: opacity var(--time) var(--ease), transform var(--time) var(--ease), visibility 0s linear var(--time);
}
.toast.is-visible { opacity: 1; visibility: visible; transform: translate(-50%, 0); transition-delay: 0s; }

/* ---------- Drawer ---------- */
.scrim {
  position: fixed; inset: 0; z-index: 40; background: var(--scrim);
  opacity: 0; visibility: hidden;
  transition: opacity var(--time) var(--ease), visibility 0s linear var(--time);
}
.scrim.is-open { opacity: 1; visibility: visible; transition-delay: 0s; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 50;
  width: min(24rem, 90vw); display: flex; flex-direction: column;
  background: var(--surface); color: var(--text); border-left: 1px solid var(--border);
  transform: translateX(100%); visibility: hidden;
  transition: transform var(--time) var(--ease), visibility 0s linear var(--time);
  padding-top: var(--safe-top);
}
.drawer.is-open { transform: none; visibility: visible; transition-delay: 0s; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); }
.drawer-body { flex: 1; min-height: 0; overscroll-behavior: contain; overflow-y: auto; padding: 1rem 1rem calc(1.5rem + var(--safe-bottom)); display: flex; flex-direction: column; gap: 0.75rem; }

/* ---------- Accordion ---------- */
.accordion { border: 1px solid var(--border); border-radius: var(--radius-small); overflow: clip; }
.accordion h3 { position: sticky; top: 0; z-index: 2; background: var(--surface); border-radius: var(--radius-small); }
.accordion-trigger[aria-expanded="true"] { border-bottom: 1px solid var(--border); border-radius: var(--radius-small) var(--radius-small) 0 0; }
.accordion-trigger {
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; width: 100%;
  min-height: 56px; padding: 0.5rem 1rem; text-align: left;
  font: inherit; font-weight: 600; color: var(--text); background: var(--surface);
  border: 0; cursor: pointer;
  transition: background-color var(--time) var(--ease);
}
.accordion-trigger:hover { background: var(--surface-soft); }
.accordion-trigger .chevron { transition: transform var(--time) var(--ease); }
.accordion-trigger[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.accordion-panel {
  display: grid; grid-template-rows: 0fr; visibility: hidden;
  transition: grid-template-rows var(--time) var(--ease), visibility 0s linear var(--time);
}
.accordion-panel.is-open { grid-template-rows: 1fr; visibility: visible; transition-delay: 0s; }
.accordion-inner { min-height: 0; overflow: hidden; padding: 0 1rem; }
.accordion-panel.is-open .accordion-inner { padding: 0.5rem 1rem 1rem; }
.accordion-inner > * + * { margin-top: 0.875rem; }

/* ---------- Reference cards ---------- */
.now-badge {
  display: inline-block; margin-left: 0.375rem; padding: 0 0.4rem; font-size: 0.6875rem; font-weight: 700;
  letter-spacing: 0.05em; text-transform: uppercase; color: var(--accent); border: 1px solid var(--accent); border-radius: 999px;
  vertical-align: middle;
}
.ref-item.is-current { border-color: var(--accent); }
.segmented { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--accent); border-radius: var(--radius-small); overflow: hidden; }
.segmented button {
  min-height: 48px; font: inherit; font-weight: 600; color: var(--accent); background: var(--surface);
  border: 0; cursor: pointer;
  transition: background-color var(--time) var(--ease), color var(--time) var(--ease);
}
.segmented button + button { border-left: 1px solid var(--accent); }
.segmented button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }
.ref-item { padding: 0.75rem; border: 1px solid var(--border); border-radius: var(--radius-small); display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.9375rem; }
.ref-item h4 { font-size: 1rem; }

/* ---------- Dialogs: bottom sheets on phones (thumb zone) ---------- */
dialog {
  width: min(30rem, calc(100vw - 1.5rem)); max-height: calc(100dvh - 1.5rem); overflow-y: auto;
  margin: auto auto calc(0.75rem + var(--safe-bottom));
  padding: 0; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
}
dialog::backdrop { background: var(--scrim); }
dialog[open] { animation: sheet-in var(--time) var(--ease); }
@keyframes sheet-in { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@media (min-width: 40rem) { dialog { margin: auto; } }

.dialog-body { display: flex; flex-direction: column; gap: 1.125rem; padding: 1.5rem 1.25rem 1.25rem; }
.dialog-actions { display: flex; flex-direction: column; gap: 0.75rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.field { display: flex; flex-direction: column; gap: 0.375rem; }
.field label { font-weight: 600; font-size: 0.9375rem; }
select {
  min-height: 52px; padding: 0 0.75rem; font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-small);
}
.form-error { min-height: 1.5rem; color: var(--danger); font-weight: 600; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; transition-delay: 0s !important; }
}

@media (min-width: 40rem) {
  .app, .app-header-inner { max-width: 36rem; }
}

/* ---------- Time chips, action groups, caution ---------- */
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.chip--text { display: inline-flex; align-items: center; justify-content: center; gap: 0.375rem; min-width: 104px; font-size: 0.9375rem; }
.chip--stack { flex-direction: column; gap: 0; padding-top: 0.25rem; padding-bottom: 0.25rem; min-height: 52px; line-height: 1.2; }
.chip--stack .chip-main { display: inline-flex; align-items: center; gap: 0.375rem; }
.chip--stack small { font-size: 0.8125rem; font-weight: 500; color: var(--muted); font-variant-numeric: tabular-nums; }
.chip:disabled { opacity: 0.45; cursor: default; }
.chip:disabled:active { transform: none; }
.action-group { display: flex; flex-direction: column; gap: 0.5rem; }
.caution {
  display: flex; align-items: flex-start; gap: 0.5rem; padding: 0.625rem 0.75rem;
  color: var(--warn); font-size: 0.9375rem; font-weight: 600;
  border: 1px solid var(--warn); border-radius: var(--radius-small);
}
.note-line { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9375rem; font-weight: 600; color: var(--accent); }
.card--note { gap: 0.75rem; }
.trigger-label { display: inline-flex; align-items: center; gap: 0.625rem; }