:root {
  --paper: #040a14;
  --paper-shadow: rgba(0, 0, 0, 0.28);
  --surface: #081321;
  --surface-strong: #0b1a2d;
  --surface-soft: #050d19;
  --ink: #90bcff;
  --muted: rgba(144, 188, 255, 0.68);
  --line: rgba(150, 186, 230, 0.28);
  --accent: #90bcff;
  --stroke: 1px;
  --thin-stroke: 1px;
  --cell-dot: 12px;
  --radius: 0;
  --safe-top: max(14px, env(safe-area-inset-top));
  --safe-right: max(14px, env(safe-area-inset-right));
  --safe-bottom: max(14px, env(safe-area-inset-bottom));
  --safe-left: max(14px, env(safe-area-inset-left));
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--paper);
}

body {
  min-height: 100dvh;
  background:
    radial-gradient(circle at top left, rgba(71, 111, 173, 0.18), transparent 30%),
    linear-gradient(180deg, #02060e 0%, var(--paper) 42%, #06101e 100%);
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color-scheme: dark;
}

body.modal-open {
  overflow: hidden;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.hidden {
  display: none !important;
}

.app-shell {
  min-height: calc(100dvh + env(safe-area-inset-bottom, 0px));
  background: var(--surface-soft);
}

.tracker-shell {
  height: calc(100dvh + env(safe-area-inset-bottom, 0px));
  min-height: 0;
}

.tracker-scroll {
  height: 100%;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  overflow: auto;
  overscroll-behavior: contain;
  border: 0;
  border-radius: 0;
  background: var(--surface-soft);
  box-shadow: none;
  -webkit-overflow-scrolling: touch;
  scrollbar-gutter: stable both-edges;
}

.tracker-table {
  width: max-content;
  min-width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
}

.tracker-table th,
.tracker-table td {
  padding: 0;
  font-weight: 400;
}

.tracker-table col.leading-column {
  width: var(--leading-col-width);
}

.tracker-table col.data-column {
  width: var(--data-col-width);
}

.tracker-header {
  height: var(--table-header-size);
}

.tracker-header th {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 8;
  height: var(--table-header-size);
  min-height: var(--table-header-size);
  max-height: var(--table-header-size);
  border-bottom: var(--stroke) solid var(--line);
  background: var(--surface-strong);
  overflow: hidden;
}

.corner-cell {
  position: -webkit-sticky;
  position: sticky;
  left: 0;
  top: 0;
  z-index: 40 !important;
  width: var(--leading-col-width);
  min-width: var(--leading-col-width);
  max-width: var(--leading-col-width);
  border-right: var(--stroke) solid var(--line);
  background: var(--surface-strong);
}

.tracker-table--portrait .date-label {
  position: -webkit-sticky;
  position: sticky;
  left: 0;
  z-index: 24;
  width: var(--leading-col-width);
  min-width: var(--leading-col-width);
  max-width: var(--leading-col-width);
  height: var(--table-row-size);
  border-right: var(--stroke) solid var(--line);
  border-bottom: var(--thin-stroke) solid var(--line);
  background: var(--surface);
  vertical-align: middle;
}

.tracker-table--portrait .date-label-text {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: 100%;
  height: 100%;
  padding: 0 5px 0 4px;
  font-family: "Avenir Next Condensed", "Arial Narrow", sans-serif;
  font-size: clamp(0.86rem, 2vw, 1.08rem);
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
}

.day-row,
.habit-row {
  height: var(--table-row-size);
}

.tracker-table--portrait .day-row.is-today > .date-label {
  background: #0e2036;
}

.tracker-cell {
  width: var(--data-col-width);
  min-width: var(--data-col-width);
  max-width: var(--data-col-width);
  height: var(--table-row-size);
  border-right: var(--stroke) solid var(--line);
}

.habit-header-button:focus-visible,
.habit-label-button:focus-visible,
.cell-toggle:focus-visible,
.add-habit-button:focus-visible,
.modal-icon-button:focus-visible,
.modal-delete:focus-visible,
.modal-input:focus-visible {
  outline: 3px solid rgba(17, 17, 17, 0.28);
  outline-offset: -3px;
}

.header-actions-cell {
  background: var(--surface-strong);
  overflow: hidden;
}

.header-actions {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 100%;
  padding: 0 6px 4px;
}

.header-helper {
  margin: 0;
  max-width: 10rem;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  line-height: 1.25;
  text-transform: uppercase;
}

.add-habit-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  min-width: 22px;
  height: 22px;
  border: var(--stroke) solid var(--line);
  background: var(--surface);
  border-radius: 2px;
  padding: 0;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  touch-action: manipulation;
}

.tracker-cell,
.filler-cell {
  border-bottom: var(--thin-stroke) solid var(--line);
  background: var(--surface-soft);
}

.cell-toggle {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
  touch-action: manipulation;
}

.cell-toggle.is-checked::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--cell-dot);
  height: var(--cell-dot);
  border-radius: 999px;
  background: var(--streak-color, var(--accent));
  transform: translate(-50%, -50%);
}

.tracker-table--portrait .habit-header-cell {
  width: var(--data-col-width);
  min-width: var(--data-col-width);
  max-width: var(--data-col-width);
  background: var(--surface-strong);
}

.tracker-table--portrait .habit-header-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
  padding: 1px 0 3px;
  cursor: pointer;
  overflow: hidden;
  touch-action: manipulation;
}

.tracker-table--portrait .habit-header-text {
  display: inline-block;
  max-height: calc(var(--table-header-size) - 4px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: "Avenir Next Condensed", "Arial Narrow", sans-serif;
  font-size: clamp(1rem, 2vw, 1.35rem);
  letter-spacing: 0.06em;
  line-height: 0.95;
  text-transform: uppercase;
}

.tracker-header .header-actions-cell {
  border-right: 0;
}

.tracker-table tr > :last-child {
  border-right: 0;
}

.tracker-table--portrait .header-actions-cell {
  background: var(--surface-strong);
  overflow: hidden;
}

.tracker-table--landscape .corner-cell {
  vertical-align: bottom;
}

.tracker-table--landscape .date-header-cell {
  width: var(--data-col-width);
  min-width: var(--data-col-width);
  max-width: var(--data-col-width);
  border-right: var(--stroke) solid var(--line);
  z-index: 30;
}

.tracker-table--landscape .date-header-cell.is-today {
  background: #0e2036;
}

.tracker-table--landscape .date-header-text {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  height: 100%;
  padding: 5px 0 0;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: "Avenir Next Condensed", "Arial Narrow", sans-serif;
  font-size: clamp(0.86rem, 2vw, 1.08rem);
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
}

.tracker-table--landscape .habit-label {
  position: -webkit-sticky;
  position: sticky;
  left: 0;
  z-index: 24;
  width: var(--leading-col-width);
  min-width: var(--leading-col-width);
  max-width: var(--leading-col-width);
  height: var(--table-row-size);
  border-right: var(--stroke) solid var(--line);
  border-bottom: var(--thin-stroke) solid var(--line);
  background: var(--surface);
  vertical-align: middle;
}

.tracker-table--landscape .habit-label-button {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
  padding: 0 12px;
  cursor: pointer;
  text-align: right;
  touch-action: manipulation;
}

.tracker-table--landscape .habit-label-text {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: "Avenir Next Condensed", "Arial Narrow", sans-serif;
  font-size: clamp(1rem, 2vw, 1.35rem);
  letter-spacing: 0.04em;
  line-height: 1;
  text-transform: uppercase;
}

.tracker-table--landscape .tracker-cell.is-today {
  background: #08192c;
}

.tracker-table--landscape .header-actions {
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 8px;
  padding: 8px 10px;
}

.tracker-table--landscape .header-helper {
  max-width: 12rem;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 14, 0.58);
  backdrop-filter: blur(6px);
}

.modal-card {
  position: relative;
  z-index: 201;
  width: min(92vw, 22rem);
  margin: min(12vh, 5rem) auto 0;
  border: var(--stroke) solid var(--line);
  border-radius: 22px;
  background: var(--surface-strong);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.32);
  padding: 20px;
  animation: modal-enter 160ms ease-out;
}

@keyframes modal-enter {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.985);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-title {
  margin: 0 0 14px;
  font-family: "Avenir Next Condensed", "Arial Narrow", sans-serif;
  font-size: 1.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.modal-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.modal-input {
  width: 100%;
  border: var(--stroke) solid var(--line);
  border-radius: 14px;
  background: var(--surface-soft);
  color: var(--ink);
  padding: 12px 14px;
  font-size: 1rem;
}

.modal-error {
  min-height: 1.3em;
  margin: 10px 0 0;
  color: #ff8c5a;
  font-size: 0.88rem;
}

.modal-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
}

.modal-primary-actions {
  display: flex;
  gap: 10px;
  margin-left: auto;
}

.modal-icon-button,
.modal-delete {
  min-width: 52px;
  min-height: 52px;
  border: var(--stroke) solid var(--line);
  background: var(--surface);
  border-radius: 14px;
  cursor: pointer;
  touch-action: manipulation;
}

.modal-icon-button {
  font-size: 1.55rem;
  line-height: 1;
}

.modal-delete {
  padding: 0 16px;
  font-family: "Avenir Next Condensed", "Arial Narrow", sans-serif;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 640px) {
  .header-actions {
    gap: 10px;
  }

  .header-helper {
    max-width: 8rem;
    font-size: 0.74rem;
  }

  .modal-card {
    margin-top: max(14px, env(safe-area-inset-top) + 8px);
    width: min(94vw, 22rem);
  }
}