/* The authenticated app shell: a near-black ground, a pill header, and a
   masonry of cream collection tiles. */

.tiles-layout {
  min-height: 100vh;
  background: var(--ground);
  font-family: var(--font-display);
  color: var(--on-ground);
}

.tiles-layout__main {
  max-width: var(--tiles-max-width);
  margin: 0 auto;
  padding: 32px var(--tiles-gutter) 120px;
}

/* ─── Header ─────────────────────────────────────────────────────────────── */

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--ground);
}

.app-header__bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: var(--tiles-max-width);
  height: var(--header-height);
  margin: 0 auto;
  padding: 0 var(--tiles-gutter);
}

.app-header__logo {
  flex: none;

  & img {
    width: 44px;
    height: 44px;
    border-radius: 11px;
  }
}

.app-header__pill {
  display: flex;
  flex: none;
  min-width: 0;
  gap: 9px;
  align-items: center;
  height: 56px;
  padding: 0 20px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--raised);
  color: var(--on-ground);
  font: 700 18px/1 var(--font-display);
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background var(--transition-fast);

  &:hover {
    background: var(--raised-hover);
    color: var(--on-ground);
  }

  & svg {
    flex: none;
    color: var(--on-ground-muted);
  }
}

.app-header__pill-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-header__search {
  display: flex;
  gap: 14px;
  align-items: center;
  width: 280px;
  min-width: 0;
  height: 56px;
  padding: 0 24px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--raised);
  color: var(--on-ground-muted);
  font: 500 17px/1 var(--font-display);
  text-align: left;
  cursor: text;
  transition: background var(--transition-fast), width var(--transition-normal);

  &:hover {
    background: var(--raised-hover);
  }

  &:focus-within {
    width: 440px;
    background: var(--raised-hover);
  }
}

.app-header__search-form {
  display: flex;
  flex: none;
  margin-left: auto;
  min-width: 0;
}

.app-header__search-input {
  width: 100%;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--on-ground);
  font: 500 17px/1 var(--font-display);

  &:focus {
    outline: none;
  }

  &::placeholder {
    color: var(--on-ground-muted);
  }

  &::-webkit-search-cancel-button {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: currentColor;
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 4 12 12M12 4 4 12' stroke='%23000' stroke-width='2' stroke-linecap='round' fill='none'/%3E%3C/svg%3E") center / contain no-repeat;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 4 12 12M12 4 4 12' stroke='%23000' stroke-width='2' stroke-linecap='round' fill='none'/%3E%3C/svg%3E") center / contain no-repeat;
    cursor: pointer;
  }
}

.app-header__search-open,
.app-header__search-close {
  display: none;
}

.app-header__spacer {
  flex: 1;
}

.app-header__avatar {
  display: grid;
  flex: none;
  place-items: center;
  width: 56px;
  height: 56px;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--on-accent);
  font: 700 20px/1 var(--font-display);
  cursor: pointer;

  &:hover {
    background: var(--accent-hover);
  }

  & img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
}

/* ─── Page head: space title, switcher, actions ──────────────────────────── */

.space-head {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}

.space-head__title {
  position: relative;
  flex: 1;
  min-width: 0;
}

.space-head__trigger {
  display: flex;
  gap: 16px;
  align-items: center;
  max-width: 100%;
  padding: 8px 22px;
  border: 0;
  border-radius: var(--radius-tile);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast);

  &:hover {
    background: var(--raised);
  }

  &:hover .space-head__chevron {
    color: var(--on-ground);
  }
}

.space-head__title:has(.menu--open) .space-head__trigger {
  background: var(--raised);
}

.space-head__name {
  min-width: 0;
  overflow: hidden;
  font: 700 clamp(44px, 5.4vw, 76px)/1.15 var(--font-display);
  letter-spacing: -0.04em;
  color: var(--on-ground);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.space-head__name--static {
  padding: 8px 22px;
}

.space-head__chevron {
  display: grid;
  flex: none;
  place-items: center;
  color: var(--on-ground-muted);
  transition: color var(--transition-fast), rotate var(--transition-fast);
}

.space-head__title:has(.menu--open) .space-head__chevron {
  color: var(--on-ground);
  rotate: 180deg;
}

.space-head__actions {
  display: flex;
  flex: none;
  gap: 10px;
  align-items: center;
}

/* ─── Buttons on the ground ──────────────────────────────────────────────── */

.ground-btn {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  height: 60px;
  padding: 0 26px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--raised);
  color: var(--on-ground);
  font: 600 18px/1 var(--font-display);
  cursor: pointer;
  transition: background var(--transition-fast);

  &:hover {
    background: var(--raised-hover);
    color: var(--on-ground);
  }

}

.ground-btn--accent {
  padding: 0 30px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;

  &:hover {
    background: var(--accent-hover);
    color: var(--on-accent);
  }
}

.ground-btn--wide {
  padding: 0 40px;
}

/* ─── Tile masonry ───────────────────────────────────────────────────────── */

.tile-grid {
  columns: 320px 3;
  column-gap: 20px;
}

/* The masonry controller replaces the browser's column engine — whose card
   distribution differs across browsers — with explicit, shortest-first columns. */
.tile-grid--masonry {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.masonry__column {
  display: flex;
  flex: 1;
  min-width: 0;
  flex-direction: column;
  gap: 20px;
}

/* Tiles are always ivory paper: glanced at, not read, and the brand's boldest
   surface. They remap the page tokens back to the paper set so at night they
   stay ivory on the dark desk while everything inside keeps its usual names. */
.tile,
.arrange__tile {
  --card: var(--paper);
  --row: var(--paper-row);
  --row-hover: var(--paper-row-hover);
  --chip: var(--paper-chip);
  --chip-hover: var(--paper-chip-hover);
  --hairline: var(--paper-hairline);
  --dashed: var(--paper-dashed);
  --ink: var(--paper-ink);
  --ink-body: var(--paper-ink-body);
  --ink-lede: var(--paper-ink-lede);
  --ink-muted: var(--paper-ink-muted);
  --ink-faint: var(--paper-ink-faint);
  --draft-ink: var(--paper-draft-ink);
}

.tile {
  margin: 0 0 20px;
  border-radius: var(--radius-tile);
  background: var(--card);
  color: var(--ink);
  break-inside: avoid;
}

.tile-grid--masonry .tile {
  margin-bottom: 0;
}

.tile__head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 30px 30px 22px;
}

.tile__heading {
  flex: 1;
  min-width: 0;
}

.tile__name {
  font: 700 34px/1.05 var(--font-display);
  letter-spacing: -0.03em;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.tile__meta {
  margin-top: 8px;
  font: 500 15px/1 var(--font-display);
  color: var(--ink-muted);
}

.tile__desc {
  margin-top: 10px;
  font: 500 16px/1.4 var(--font-display);
  color: var(--ink-lede);
  overflow-wrap: anywhere;
}

.tile__menu {
  flex: none;
  opacity: 0;
  transition: opacity var(--transition-fast);

  .tile:hover &,
  .tile:focus-within &,
  &:has(.menu--open) {
    opacity: 1;
  }
}

.tile__menu-trigger {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--row);
  color: var(--ink);
  cursor: pointer;

  &:hover {
    background: var(--row-hover);
    color: var(--ink);
  }
}

.tile__rows {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 16px 16px;
}

/* ─── Article rows ───────────────────────────────────────────────────────── */

.row {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 16px 18px;
  border-radius: var(--radius-row);
  background: var(--row);
  color: var(--ink);
  cursor: pointer;
  transition: background var(--transition-fast);

  &:hover {
    background: var(--row-hover);
    color: var(--ink);
  }
}

.row__dot {
  flex: none;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-pill);
  background: var(--ink);

}

.row__dot--draft {
  border: 3px solid var(--ink-faint);
  background: transparent;
}

.row__title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  font: 600 19px/1.25 var(--font-display);
  letter-spacing: -0.01em;
  text-overflow: ellipsis;
  white-space: nowrap;

  .row--draft & {
    color: var(--draft-ink);
  }
}

.row__date {
  flex: none;
  font: 500 14px/1 var(--font-display);
  color: var(--ink-muted);
}

.row--add {
  display: flex;
  gap: 8px;
  width: 100%;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  margin-top: 4px;
  padding: 0;
  border: 2px dashed var(--dashed);
  border-radius: var(--radius-row);
  background: transparent;
  color: var(--ink-faint);
  font: 600 16px/1 var(--font-display);
  cursor: pointer;

  &:hover {
    border-color: var(--ink);
    background: var(--row);
    color: var(--ink);
  }
}

/* ─── Reorder mode ───────────────────────────────────────────────────────── */

.arrange {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.arrange__tile {
  padding: 10px;
  border-radius: var(--radius-menu);
  background: var(--card);
  color: var(--ink);
}

.arrange__head {
  display: flex;
  gap: 18px;
  align-items: center;
  height: 78px;
  padding: 0 18px;
  cursor: grab;
}

.arrange__name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  font: 600 26px/1.15 var(--font-display);
  letter-spacing: -0.025em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.arrange__rows {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 8px 8px;
}

.arrange__row {
  display: flex;
  gap: 14px;
  align-items: center;
  height: 58px;
  padding: 0 16px;
  border-radius: var(--radius-row-sm);
  background: var(--row);
  cursor: grab;

  &:hover {
    background: var(--row-hover);
  }
}

.arrange__row-title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  font: 500 18px/1.25 var(--font-display);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.arrange__grip {
  flex: none;
  color: var(--ink);
  opacity: 0.4;

  .arrange__row & {
    opacity: 0.32;
  }
}

/* ─── Empty state ────────────────────────────────────────────────────────── */

.tiles-empty {
  padding: 80px 0;
  text-align: center;
}

.tiles-empty__title {
  font: 700 34px/1.1 var(--font-display);
  letter-spacing: -0.03em;
  color: var(--on-ground);
}

.tiles-empty__description {
  margin-top: 12px;
  font: 500 19px/1.5 var(--font-display);
  color: var(--on-ground-muted);
}

@media (pointer: coarse) {
  .tile__menu {
    opacity: 1;
  }

  .tile__menu-trigger {
    width: 44px;
    height: 44px;
  }
}

@media (width <= 640px) {
  .tiles-layout__main {
    padding-top: 16px;
  }

  .app-header__bar {
    gap: 10px;
  }

  .app-header__pill {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    flex: 0 1 auto;
    padding: 0 16px;
    font-size: 16px;
  }

  .app-header__search-open {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    padding: 0;
    border: 0;
    border-radius: var(--radius-pill);
    background: var(--raised);
    color: var(--on-ground-muted);
    cursor: pointer;

    &:hover {
      background: var(--raised-hover);
    }
  }

  .app-header__search {
    display: none;
  }

  .app-header__search-form--open {
    position: absolute;
    inset: 0 var(--tiles-gutter);
    z-index: 30;
    align-items: center;
    background: var(--ground);
  }

  .app-header__search-form--open .app-header__search-open {
    display: none;
  }

  .app-header__search-form--open .app-header__search {
    display: flex;
    flex: 1;
    width: auto;
    height: 56px;
    padding-right: 10px;
  }

  .app-header__search-form--open .app-header__search-close {
    display: grid;
    place-items: center;
    flex: none;
    width: 36px;
    height: 36px;
    margin-left: 6px;
    padding: 0;
    border: 0;
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--on-ground-muted);
    cursor: pointer;

    &:hover {
      background: var(--raised);
      color: var(--on-ground);
    }
  }

  .space-head {
    gap: 20px;
    margin-bottom: 28px;
  }

  .space-head__title {
    flex: none;
    width: 100%;
  }

  .space-head__actions {
    width: 100%;
  }

  .ground-btn {
    flex: 1;
    justify-content: center;
    height: 54px;
    padding: 0 18px;
    font-size: 16px;
  }

  .space-head__actions .ground-btn {
    flex: 0 1 auto;
    white-space: nowrap;
  }

  .space-head__actions .ground-btn--accent {
    flex: 1 1 auto;
  }

  .tile__head {
    padding: 22px 22px 16px;
  }

  .tile__name {
    font-size: 28px;
  }
}