/* ============================================================
   Book PWA — warm ink + amber, mobile-first
   Design tokens (light default, dark via prefers-color-scheme)
   ============================================================ */

:root {
  /* Color: warm ink + amber on cream */
  --color-primary: #78716C;       /* warm ink */
  --color-on-primary: #FFFBEB;
  --color-accent: #D97706;        /* amber CTA */
  --color-on-accent: #FFFBEB;
  --color-bg: #FFFBEB;            /* cream */
  --color-surface: #FFFFFF;
  --color-surface-2: #FAF5EB;
  --color-fg: #1c1917;            /* body text */
  --color-fg-muted: #78716C;
  --color-fg-subtle: #a8a29e;
  --color-border: #E7E2D5;
  --color-border-strong: #D6CFBE;
  --color-ok: #15803D;
  --color-err: #DC2626;
  --color-rec: #DC2626;
  --color-ring: #D97706;

  /* Type */
  --font-display: "Calistoga", "Georgia", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;

  /* Spacing (4/8 rhythm) */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-8: 32px;
  --s-10: 40px;
  --s-12: 48px;
  --s-16: 64px;

  /* Radius */
  --r-2: 10px;
  --r-3: 14px;
  --r-4: 20px;
  --r-pill: 999px;

  /* Shadows (subtle, on-style) */
  --shadow-1: 0 1px 2px rgba(28, 25, 23, 0.04), 0 0 0 1px rgba(28, 25, 23, 0.04);
  --shadow-2: 0 6px 16px -8px rgba(28, 25, 23, 0.18), 0 2px 4px -2px rgba(28, 25, 23, 0.08);

  /* Type scale */
  --t-display: clamp(36px, 9vw, 44px);
  --t-h2: 13px;
  --t-body: 17px;
  --t-small: 14px;
  --t-micro: 12px;

  /* Easing/duration */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --d-fast: 150ms;
  --d-base: 240ms;
  --d-slow: 360ms;
}

/* ============================================================
   RESET
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }

/* Переключатель темы: light | dark | auto.
   data-theme="light"/"dark" форсирует; data-theme="auto"/нет → системная. */
html[data-theme="dark"] {
  color-scheme: dark;
  --color-primary: #A8A29E;
  --color-on-primary: #1c1917;
  --color-accent: #F59E0B;
  --color-on-accent: #1c1917;
  --color-bg: #1c1917;
  --color-surface: #292524;
  --color-surface-2: #1f1c1a;
  --color-fg: #FFFBEB;
  --color-fg-muted: #A8A29E;
  --color-fg-subtle: #78716C;
  --color-border: #3a3530;
  --color-border-strong: #544f48;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.04);
  --shadow-2: 0 6px 20px -6px rgba(0, 0, 0, 0.5);
}
html[data-theme="light"] { color-scheme: light; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #A8A29E;
    --color-on-primary: #1c1917;
    --color-accent: #F59E0B;
    --color-on-accent: #1c1917;
    --color-bg: #1c1917;
    --color-surface: #292524;
    --color-surface-2: #1f1c1a;
    --color-fg: #FFFBEB;
    --color-fg-muted: #A8A29E;
    --color-fg-subtle: #78716C;
    --color-border: #3a3530;
    --color-border-strong: #544f48;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.04);
    --shadow-2: 0 6px 20px -6px rgba(0, 0, 0, 0.5);
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--t-body);
  line-height: 1.5;
  background: var(--color-bg);
  color: var(--color-fg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding:
    max(env(safe-area-inset-top), var(--s-4))
    var(--s-4)
    calc(var(--s-20) + env(safe-area-inset-bottom))
    var(--s-4);
  min-height: 100dvh;
  max-width: 640px;
  margin: 0 auto;
}

/* ============================================================
   TOP HEADER
   ============================================================ */

.top { padding: var(--s-6) 0 var(--s-2); }
.top h1 {
  font-family: var(--font-display);
  font-size: var(--t-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--color-fg);
  line-height: 1.1;
}
.top .hint {
  color: var(--color-fg-muted);
  font-size: var(--t-small);
  margin-top: var(--s-2);
}

/* ============================================================
   LAYOUT
   ============================================================ */

.content { display: flex; flex-direction: column; gap: var(--s-10); padding-top: var(--s-8); }
section h2 {
  font-family: var(--font-body);
  font-size: var(--t-h2);
  font-weight: 600;
  text-transform: lowercase;
  letter-spacing: 0.06em;
  color: var(--color-fg-muted);
  margin-bottom: var(--s-3);
}

/* ============================================================
   ГЛАВНАЯ КНОПКА ЗАПИСИ
   ============================================================ */

.record { display: flex; flex-direction: column; align-items: center; gap: var(--s-4); }

.rec-btn {
  --core: 124px;
  --ring-gap: 14px;
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: var(--s-3);
  width: calc(var(--core) + var(--ring-gap) * 2 + 16px);
  background: transparent;
  border: 0;
  padding: var(--s-2) 0 0;
  cursor: pointer;
  color: var(--color-fg);
  font-family: inherit;
  -webkit-appearance: none;
}

.rec-btn:focus-visible { outline: none; }
.rec-btn:focus-visible .rec-btn__core { box-shadow: 0 0 0 4px var(--color-ring); }

/* Pulse ring (recording) */
.rec-btn__ring {
  position: absolute;
  top: var(--ring-gap); left: 50%;
  transform: translateX(-50%);
  width: var(--core); height: var(--core);
  border-radius: 50%;
  background: var(--color-rec);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--d-base) var(--ease-out);
}
.rec-btn[aria-pressed="true"] .rec-btn__ring {
  opacity: 0.18;
  animation: rec-pulse 1.4s var(--ease-out) infinite;
}

@keyframes rec-pulse {
  0%   { transform: translateX(-50%) scale(1);   opacity: 0.18; }
  70%  { transform: translateX(-50%) scale(1.6); opacity: 0;    }
  100% { transform: translateX(-50%) scale(1.6); opacity: 0;    }
}

/* Core circle (CTA) */
.rec-btn__core {
  width: var(--core);
  height: var(--core);
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-on-accent);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-2);
  transition: transform var(--d-fast) var(--ease-out),
              background var(--d-base) var(--ease-out),
              box-shadow var(--d-base) var(--ease-out);
}
.rec-btn__ico { width: 44px; height: 44px; }
.rec-btn:active .rec-btn__core { transform: scale(0.96); }

/* Idle: ink color. Recording: red. */
.rec-btn__core { background: var(--color-fg); color: var(--color-on-primary); }
.rec-btn[aria-pressed="true"] .rec-btn__core { background: var(--color-rec); }
.rec-btn[aria-pressed="true"] .rec-btn__ico { display: none; }
.rec-btn[aria-pressed="true"] .rec-btn__core::before {
  content: "";
  width: 22px; height: 22px;
  border-radius: 4px;
  background: var(--color-on-accent);
  display: block;
}

/* Label */
.rec-btn__label {
  font-size: var(--t-small);
  font-weight: 500;
  color: var(--color-fg-muted);
  letter-spacing: 0.01em;
}
.rec-btn[aria-pressed="true"] .rec-btn__label { color: var(--color-rec); font-weight: 600; }

/* Timer */
.rec-btn__timer {
  font-family: var(--font-mono);
  font-size: var(--t-micro);
  color: var(--color-rec);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.rec-state {
  min-height: 20px;
  font-size: var(--t-small);
  color: var(--color-fg-muted);
  text-align: center;
  max-width: 320px;
}
.rec-state.ok { color: var(--color-ok); font-weight: 500; }
.rec-state.err { color: var(--color-err); font-weight: 500; }

/* ============================================================
   ФОТО
   ============================================================ */

.photo-row { display: flex; }
.photo-btn {
  display: inline-flex; align-items: center; gap: var(--s-3);
  padding: var(--s-4) var(--s-5);
  min-height: 56px;
  background: var(--color-surface);
  color: var(--color-fg);
  border: 1.5px dashed var(--color-border-strong);
  border-radius: var(--r-3);
  font-family: inherit;
  font-size: var(--t-body);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--d-fast), border-color var(--d-fast), transform var(--d-fast);
}
.photo-btn:hover { border-color: var(--color-fg-muted); }
.photo-btn:active { transform: scale(0.98); background: var(--color-surface-2); }
.photo-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--color-ring); }
.photo-btn svg { width: 22px; height: 22px; }

#photoCaption {
  width: 100%;
  margin-top: var(--s-3);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--r-3);
  padding: var(--s-3) var(--s-4);
  font-size: var(--t-body);
  font-family: inherit;
  color: var(--color-fg);
  min-height: 48px;
  transition: border-color var(--d-fast);
}
#photoCaption:focus { outline: none; border-color: var(--color-accent); }

/* ============================================================
   СПИСОК ПОСЛЕДНИХ
   ============================================================ */

.list__head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 0 var(--s-1);
  margin-bottom: var(--s-3);
}
.list__count {
  font-family: var(--font-mono);
  font-size: var(--t-micro);
  color: var(--color-fg-subtle);
}

.list__items { display: flex; flex-direction: column; gap: var(--s-2); }

.item {
  --pad: var(--s-4);
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--color-surface);
  border-radius: var(--r-3);
  padding: var(--pad);
  box-shadow: var(--shadow-1);
  border: 1px solid var(--color-border);
  transition: transform var(--d-fast) var(--ease-out),
              box-shadow var(--d-fast) var(--ease-out);
  -webkit-touch-callout: none;
}
.item:hover { box-shadow: var(--shadow-2); }
.item:active { transform: scale(0.99); }
.item:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--color-ring); }

.item__head {
  display: flex; align-items: center; gap: var(--s-2);
  margin-bottom: var(--s-1);
}
.item__type {
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--r-pill);
  background: var(--color-surface-2);
  color: var(--color-fg-muted);
}
.item__type svg { width: 14px; height: 14px; }
.item__date {
  font-family: var(--font-mono);
  font-size: var(--t-micro);
  color: var(--color-fg-subtle);
}

.item__text {
  color: var(--color-fg);
  font-size: var(--t-body);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}
.item__text.empty { color: var(--color-fg-subtle); font-style: italic; }

.list__empty {
  text-align: center;
  color: var(--color-fg-subtle);
  font-size: var(--t-small);
  padding: var(--s-10) var(--s-4);
  background: var(--color-surface);
  border-radius: var(--r-3);
  border: 1px dashed var(--color-border);
}

/* ============================================================
   STICKY-BOTTOM PUSH
   ============================================================ */

.bottom {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: flex; justify-content: center;
  padding: var(--s-3) var(--s-4) calc(var(--s-3) + env(safe-area-inset-bottom));
  pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, var(--color-bg) 60%);
  z-index: 10;
}
.push {
  pointer-events: auto;
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: var(--s-3) var(--s-5);
  min-height: 48px;
  background: var(--color-surface);
  color: var(--color-fg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--r-pill);
  font-family: inherit;
  font-size: var(--t-small);
  font-weight: 500;
  cursor: pointer;
  box-shadow: var(--shadow-1);
  transition: background var(--d-fast), color var(--d-fast), transform var(--d-fast);
}
.push:hover { background: var(--color-surface-2); color: var(--color-fg); }
.push:active { transform: scale(0.98); }
.push:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--color-ring); }
.push:disabled { opacity: 0.5; cursor: not-allowed; }
.push svg { width: 18px; height: 18px; }
.push.done { color: var(--color-ok); border-color: var(--color-ok); background: transparent; }

/* ============================================================
   TOAST
   ============================================================ */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(76px + var(--s-3) + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  max-width: calc(100vw - var(--s-8));
  padding: var(--s-3) var(--s-5);
  background: var(--color-fg);
  color: var(--color-on-primary);
  border-radius: var(--r-pill);
  font-size: var(--t-small);
  box-shadow: var(--shadow-2);
  z-index: 20;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--d-base) var(--ease-out),
              transform var(--d-base) var(--ease-out);
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}
.toast.err { background: var(--color-err); }

/* ============================================================
   THEME — иконки переключателя и layout bottom-bar
   ============================================================ */

.bottom__row {
  display: inline-flex; align-items: center; gap: var(--s-2);
}

.push--icon { padding: var(--s-3); min-width: 48px; min-height: 48px; }
.push--icon svg { width: 20px; height: 20px; }

/* Только одна иконка видна в зависимости от data-theme на <html> */
.theme-ico { display: none; }
html[data-theme="light"] .theme-ico--sun { display: inline-block; }
html[data-theme="auto"]  .theme-ico--auto { display: inline-block; }
@media (prefers-color-scheme: dark) {
  /* default: moon (auto+dark системная) */
  :root:not([data-theme="light"]):not([data-theme="dark"]) .theme-ico--moon { display: inline-block; }
}
html[data-theme="dark"] .theme-ico--moon { display: inline-block; }

/* ============================================================
   DELETE BUTTON на карточке
   ============================================================ */

.item { position: relative; padding-right: 56px; }
.item__del {
  position: absolute;
  top: var(--s-3); right: var(--s-3);
  width: 36px; height: 36px;
  border-radius: 50%;
  background: transparent;
  color: var(--color-fg-subtle);
  border: 0;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background var(--d-fast), color var(--d-fast);
  font-family: inherit;
  -webkit-appearance: none;
}
.item__del:hover { background: var(--color-surface-2); color: var(--color-err); }
.item__del:active { transform: scale(0.92); }
.item__del:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--color-ring); }
.item__del svg { width: 18px; height: 18px; }

/* Когда карточка удаляется — короткая fade-out */
.item.leaving {
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--d-base) var(--ease-out), transform var(--d-base) var(--ease-out);
}

/* ============================================================
   PHOTO GALLERY — вторая кнопка ghost
   ============================================================ */

.photo-row { display: flex; flex-wrap: wrap; gap: var(--s-3); }
.photo-btn--ghost {
  background: transparent;
  border-style: dashed;
  color: var(--color-fg-muted);
}
.photo-btn--ghost:hover { color: var(--color-fg); border-color: var(--color-fg-muted); }

/* ============================================================
   REDUCED MOTION
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .rec-btn__ring { animation: none !important; }
}

/* ============================================================
   RESPONSIVE — small phone (≤ 374px)
   ============================================================ */

@media (max-width: 374px) {
  .rec-btn { --core: 112px; }
}

/* ============================================================
   LANDSCAPE — короткая высота
   ============================================================ */

@media (orientation: landscape) and (max-height: 500px) {
  .rec-btn { --core: 96px; }
}