@font-face {
  font-family: 'Roboto Mono';
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
  src: url('./fonts/RobotoMono-Variable.ttf') format('truetype');
}

/* ---------- tokens ---------- */
:root {
  color-scheme: light;

  /* Два цвета + белый */
  --color-text: #232333;
  --color-accent: #dc143c;
  --color-accent-hover: #b91c3c;
  --color-bg: #ffffff;
  --color-code-bg: #f1f1f1;
  --color-pre-bg: #ececec;

  --font-mono: 'Roboto Mono', 'Courier New', monospace;
  --font-callout: 'IBM Plex Mono', 'Courier New', monospace;
  --font-size-base: 15px;
  --line-height-base: 1.6;
  --line-height-content: 1.5;

  --content-max-width: 800px;
  --content-padding: 1ch;
  --border-radius: 5px;

  /* Внутренние алиасы */
  --bg: var(--color-bg);
  --surface: var(--color-bg);
  --surface-soft: var(--color-code-bg);
  --ink: var(--color-text);
  --ink-soft: var(--color-text);
  --muted: var(--color-text);
  --line: var(--color-pre-bg);
  --line-strong: #d9d9d9;
  --accent: var(--color-text);
  --accent-strong: #000000;
  --accent-soft: var(--color-code-bg);
  --accent-ink: var(--color-bg);
  --weekend: var(--color-accent);
  --danger: var(--color-accent);
  --danger-soft: var(--color-code-bg);
  --on-danger: var(--color-bg);
  --font: var(--font-mono);
  --display: var(--font-mono);
  --mono: var(--font-mono);
}

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

[hidden] { display: none !important; }

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

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

p { font-family: 'Roboto Mono', 'Courier New', monospace; }

button, input, textarea { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
::selection { background: var(--accent); color: var(--accent-ink); }

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

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 1.15em;
  height: 1.15em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.app {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: max(22px, env(safe-area-inset-top)) 28px 0;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 2px;
}

.top-actions .btn:hover {
  background: transparent;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 11px;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  background: transparent;
  color: var(--ink-soft);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.2;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease, transform .1s ease;
}

.btn:hover { background: var(--surface-soft); color: var(--ink); }
.btn:active { transform: translateY(1px); }
.btn .icon { width: 18px; height: 18px; }

.btn-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
  color: var(--accent-ink);
}

.btn-danger {
  border-color: var(--danger);
  background: var(--danger);
  color: var(--on-danger);
}
.btn-danger:hover {
  border-color: var(--color-accent-hover);
  background: var(--color-accent-hover);
  color: var(--on-danger);
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: var(--border-radius);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.icon-btn:hover { background: var(--surface-soft); color: var(--ink); }
.icon-btn .icon { width: 18px; height: 18px; }

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 0;
  border: 0;
  border-bottom: 1px dotted var(--line-strong);
  border-radius: 0;
  background: none;
  color: var(--ink-soft);
  font-size: 11.5px;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease;
}
.link-btn:hover { color: var(--accent); border-color: var(--accent); }
.link-btn .icon { width: 14px; height: 14px; }

/* ---------- layout ---------- */
.main {
  flex: 1;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 34px 28px 0;
}

/* ---------- weeks ---------- */
.week-head {
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
}

.week-title {
  margin: 0;
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(21px, 2.6vw, 25px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.01em;
  text-wrap: balance;
}

.week-section + .week-section { margin-top: 28px; }

.week-empty {
  margin: 8px 4px 0;
  color: var(--muted);
  font-size: 13px;
}

/* ---------- grid ---------- */
.grid-wrap {
  margin-top: 20px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}

.week-section:not(.is-current) .grid-wrap { margin-top: 10px; }

.grid {
  width: 100%;
  min-width: 300px;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
}

.grid tbody th.habit-cell {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--surface);
  text-align: left;
}

.grid tbody td.day-cell { width: 44px; }

.grid tbody th.habit-cell {
  padding: 4px 8px 4px 4px;
  font-weight: inherit;
}

.habit-name {
  display: block;
  padding: 6px 4px;
  color: var(--ink);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: var(--line-height-content);
  overflow-wrap: break-word;
}

.grid tbody tr { transition: background .15s ease; }

.day-cell {
  padding: 4px 1px;
  text-align: center;
}

.cell {
  position: relative;
  display: inline-block;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: var(--border-radius);
  background: transparent;
  cursor: pointer;
  transition: transform .12s ease;
  -webkit-tap-highlight-color: transparent;
}

.cell::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 20px;
  height: 20px;
  margin: auto;
  border-radius: 50%;
  background: var(--accent);
  transform: scale(.2);
  transition: transform .15s ease, background .15s ease;
}

.cell:not(.is-on):hover::after {
  transform: scale(.3);
}

.cell.is-on::after {
  transform: scale(1);
}

.day-cell.is-weekend .cell::after {
  background: var(--weekend);
}

.cell:active { transform: scale(.9); }

.cell.pop { animation: cell-pop .24s ease; }

@keyframes cell-pop {
  0% { transform: scale(.84); }
  55% { transform: scale(1.09); }
  100% { transform: scale(1); }
}

/* ---------- empty & add ---------- */
.empty {
  padding: 22px 0 6px;
  text-align: center;
}

.empty-title {
  margin: 0 0 6px;
  font-family: var(--display);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0;
}

.empty-text {
  max-width: 330px;
  margin: 0 auto 6px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.45;
}

.add-zone { margin-top: 14px; }

.add-form {
  display: flex;
  align-items: center;
  gap: 6px;
}

.add-form input {
  flex: 1;
  min-width: 0;
  height: 36px;
  padding: 0 2px;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font-size: var(--font-size-base);
  outline: none;
}
.add-form input::placeholder { color: var(--muted); }
.add-form input:focus {
  border-bottom-color: var(--ink);
  box-shadow: 0 1px 0 0 var(--ink);
}
.add-form input:focus-visible { outline: none; }

.add-submit {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: var(--border-radius);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.add-submit:hover {
  background: var(--accent-soft);
  color: var(--ink);
}
.add-submit .icon { width: 18px; height: 18px; }

/* ---------- footer ---------- */
.app-foot {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 18px 30px max(26px, calc(16px + env(safe-area-inset-bottom)));
  color: var(--muted);
  font-size: 11.5px;
}

.foot-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.chip {
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: var(--border-radius);
  background: var(--surface-soft);
  color: var(--ink-soft);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* ---------- dialogs ---------- */
.dialog {
  width: min(520px, calc(100vw - 28px));
  max-height: calc(100dvh - 28px);
  padding: 0;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--border-radius);
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 34px 100px -20px rgba(35, 35, 51, .3);
}

.dialog::backdrop {
  background: rgba(35, 35, 51, .35);
  backdrop-filter: blur(4px);
}

.dialog-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 22px;
}

.dialog-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.dialog-head h2,
.dialog-confirm h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 26px;
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -.01em;
}

.dialog-sub {
  max-width: 48ch;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.45;
}

.dialog-text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.5;
}

.dialog-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 2px;
}

.dialog-confirm { width: min(420px, calc(100vw - 28px)); }
.dialog-confirm .dialog-form { gap: 12px; }
.dialog-confirm .dialog-actions { margin-top: 8px; }

.form-error {
  margin: 0;
  padding: 8px 11px;
  border-radius: var(--border-radius);
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 12.5px;
  line-height: 1.4;
}

/* markdown editor */
.md-dialog {
  width: min(840px, calc(100vw - 24px));
  overflow: hidden;
}

.md-dialog .dialog-form {
  height: min(780px, calc(100dvh - 24px));
}

.md-dialog textarea {
  flex: 1;
  width: 100%;
  min-height: 260px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--border-radius);
  background: var(--color-pre-bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.55;
  tab-size: 2;
  resize: none;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow: auto;
}
.md-dialog textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.format-hint {
  margin: -4px 0 0;
  color: var(--muted);
  font-size: 11.5px;
}

.format-hint code {
  padding: 1px 5px;
  border-radius: var(--border-radius);
  background: var(--color-code-bg);
  font-family: var(--mono);
  font-size: 10.5px;
  white-space: nowrap;
}

/* ---------- toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: max(24px, calc(16px + env(safe-area-inset-bottom)));
  z-index: 100;
  max-width: calc(100vw - 32px);
  padding: 10px 16px;
  border-radius: var(--border-radius);
  background: var(--ink);
  color: var(--bg);
  box-shadow: 0 14px 44px rgba(0, 0, 0, .22);
  font-size: 13px;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity .2s ease, transform .2s ease;
}
.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (hover: hover) {
  .grid tbody tr:hover th.habit-cell {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    background: var(--surface-soft);
  }
  .grid tbody tr:hover td.day-cell { background: var(--surface-soft); }
  .grid tbody tr:hover td.day-cell:last-child {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
  }
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .topbar {
    padding: max(16px, env(safe-area-inset-top)) 16px 0;
  }

  .main { padding: 20px 16px 0; }

  .week-title { font-size: 20px; }

  .grid-wrap { margin-top: 16px; }
  .week-section:not(.is-current) .grid-wrap { margin-top: 10px; }
  .grid { min-width: 330px; }
  .grid tbody td.day-cell { width: 34px; }

  .habit-name { font-size: 14px; }

  .app-foot {
    padding: 14px 20px max(22px, calc(14px + env(safe-area-inset-bottom)));
    font-size: 11px;
  }

  .md-dialog {
    width: calc(100vw - 16px);
    max-height: calc(100dvh - 16px);
    border-radius: var(--border-radius);
  }
  .md-dialog .dialog-form {
    height: calc(100dvh - 16px);
    padding: 16px;
  }
  .md-dialog .dialog-head h2 { font-size: 23px; }
  .format-hint { display: none; }
  .dialog-form { padding: 18px; }
  .dialog-head h2, .dialog-confirm h2 { font-size: 23px; }
}

@media (max-width: 370px) {
  .topbar { padding-left: 12px; padding-right: 12px; }
  .main { padding-left: 12px; padding-right: 12px; }
  .week-title { font-size: 19px; }
  .grid tbody td.day-cell { width: 32px; }
  .cell { width: 30px; height: 30px; }
  .habit-name { font-size: 13.5px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- noscript ---------- */
.noscript {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--bg);
  color: var(--ink);
  text-align: center;
  z-index: 200;
}