/* ==========================================================================
   DESIGN SYSTEM — "Sheets"
   Standalone component layer. Pairs with Tailwind utilities for layout.
   Structure:
     1. Tokens          — colors, radii, shadows, type
     2. Base            — page defaults, motion
     3. Sheet           — the centralized paper sheet + stacked edges
     4. Buttons         — .btn + variants & sizes
     5. Forms           — .field, .select-field, .textarea, .checkbox, .toggle, .stepper
     6. List rows       — .row, .task-row (selectable)
     7. Progress        — .progress-track/.progress-fill
     8. Floating bar    — .float-bar + .bar-btn
     9. Calendar badge  — .cal-badge (tear-off date)
   ========================================================================== */

/* 1. TOKENS ------------------------------------------------------------- */
:root {
  /* color */
  --paper:      #F1EEE7;   /* page background */
  --ink:        #25302E;   /* primary text, dark surfaces */
  --faded:      #7C837E;   /* secondary text */
  --clover:     #2F7A4D;   /* primary action, success */
  --clover-tint:#EFF6F1;   /* selected-row tint */
  --brick:      #CE4B3B;   /* expense, danger, calendar band */
  --gold:       #E8C468;   /* highlight strokes (sun, quotes) */
  --gold-soft:  #FDF0D5;   /* highlight fills (chips, quote band) */
  --gold-ink:   #6B5518;   /* text on gold-soft */
  --hover:      #FAF9F5;   /* row hover */
  --track:      #E8E4DA;   /* progress/toggle track */

  --border-strong: rgba(37, 48, 46, .25);
  --border-mid:    rgba(37, 48, 46, .15);
  --border-faint:  rgba(37, 48, 46, .10);

  /* shape */
  --r-sheet: 18px;
  --r-card:  14px;
  --r-field: 12px;
  --r-pill:  9999px;

  /* elevation */
  --shadow-sheet: 0 1px 2px rgba(37,48,46,.06), 0 12px 32px -16px rgba(37,48,46,.25);
  --shadow-soft:  0 1px 2px rgba(37,48,46,.10);
  --shadow-lift:  0 2px 6px rgba(37,48,46,.14);
  --shadow-float: 0 20px 45px -12px rgba(37,48,46,.45);

  /* type */
  --font-sans: "Hanken Grotesk", system-ui, sans-serif;

  /* focus */
  --focus-ring: 0 0 0 4px rgba(47, 122, 77, .12);
}

/* 2. BASE ---------------------------------------------------------------- */
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* 3. SHEET ---------------------------------------------------------------- */
.sheet {
  background: #fff;
  border-radius: var(--r-sheet);
  position: relative;
  z-index: 1;
  overflow: hidden;
  box-shadow: var(--shadow-sheet);
}

.sheet-stack { position: relative; }
.sheet-stack::before,
.sheet-stack::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 0 0 var(--r-card) var(--r-card);
  background: #fff;
  box-shadow: 0 1px 2px rgba(37,48,46,.08);
}
.sheet-stack::before { bottom: -8px;  width: calc(100% - 36px); height: 16px; opacity: .75; }
.sheet-stack::after  { bottom: -15px; width: calc(100% - 76px); height: 16px; opacity: .45; }

/* 4. BUTTONS -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  height: 2.5rem;               /* default: md */
  padding: 0 1.25rem;
  border: 0;
  border-radius: var(--r-pill);
  background: transparent;
  color: inherit;
  font: 700 .875rem/1 var(--font-sans);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  transition: background-color .12s ease, box-shadow .12s ease,
              border-color .12s ease, transform .05s ease;
}
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.btn:active:not(:disabled) { transform: scale(.98); }
.btn:disabled { cursor: not-allowed; opacity: .5; }

/* variants */
.btn-primary { background: var(--clover); color: #fff; box-shadow: var(--shadow-soft); }
.btn-primary:hover:not(:disabled) { box-shadow: var(--shadow-lift); }

.btn-white { background: #fff; color: var(--ink); box-shadow: var(--shadow-soft); }
.btn-white:hover:not(:disabled) { box-shadow: var(--shadow-lift); }

.btn-outline { background: #fff; color: var(--ink); border: 2px solid var(--border-mid); }
.btn-outline:hover:not(:disabled) { border-color: var(--border-strong); }

/* sizes */
.btn-sm { height: 2.25rem; padding: 0 1rem;    font-size: .85rem;  }
.btn-lg { height: 2.75rem; padding: 0 1.25rem; font-size: .9rem;   }
.btn-xl { height: 3rem;    padding: 0 1.75rem; font-size: 1rem;    }

/* 5. FORMS ---------------------------------------------------------------- */
.field {
  width: 100%;
  height: 3rem;
  border-radius: var(--r-field);
  background: #fff;
  border: 2px solid var(--border-mid);
  padding: 0 1rem;
  font: 400 15px/1.4 var(--font-sans);
  color: var(--ink);
  transition: border-color .12s ease, box-shadow .12s ease;
}
.field::placeholder { color: #A9AFA9; }
.field:focus { outline: none; border-color: var(--clover); box-shadow: var(--focus-ring); }

.textarea {
  width: 100%;
  border-radius: var(--r-field);
  background: #fff;
  border: 2px solid var(--border-mid);
  padding: .6rem 1rem;
  font: 400 15px/1.6 var(--font-sans);
  color: var(--ink);
  transition: border-color .12s ease, box-shadow .12s ease;
}
.textarea:focus { outline: none; border-color: var(--clover); box-shadow: var(--focus-ring); }

.select-field {
  height: 2.5rem;
  border-radius: 10px;
  background: #fff;
  border: 2px solid var(--border-mid);
  padding: 0 2rem 0 .8rem;
  font: 600 14px/1 var(--font-sans);
  color: var(--ink);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none'%3E%3Cpath d='M6 8l4 4 4-4' stroke='%237C837E' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .5rem center;
  background-size: 1rem;
  cursor: pointer;
}
.select-field:focus { outline: none; border-color: var(--clover); }

.checkbox {
  appearance: none;
  width: 1.15rem;
  height: 1.15rem;
  flex-shrink: 0;
  border: 2px solid var(--border-strong);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  transition: background-color .12s ease, border-color .12s ease;
}
.checkbox:checked {
  background: var(--clover) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14' fill='none'%3E%3Cpath d='M2.5 7.5L6 11l5.5-8' stroke='white' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/72% no-repeat;
  border-color: var(--clover);
}
.checkbox:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.toggle {
  --w: 2.6rem; --h: 1.5rem;
  appearance: none;
  width: var(--w);
  height: var(--h);
  flex-shrink: 0;
  border-radius: var(--r-pill);
  background: var(--track);
  position: relative;
  cursor: pointer;
  transition: background-color .15s ease;
}
.toggle::before {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: calc(var(--h) - 4px);
  height: calc(var(--h) - 4px);
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 2px rgba(0,0,0,.18);
  transition: transform .15s ease;
}
.toggle:checked { background: var(--clover); }
.toggle:checked::before { transform: translateX(calc(var(--w) - var(--h))); }
.toggle:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.toggle-sm { --w: 2.25rem; --h: 1.3rem; }

.stepper {
  display: inline-flex;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border-mid);
  border-radius: var(--r-pill);
}
.stepper button {
  width: 2.25rem; height: 2.25rem;
  display: grid; place-items: center;
  border: 0; background: none; cursor: pointer;
  font: 700 1.1rem/1 var(--font-sans);
  color: rgba(37,48,46,.7);
}
.stepper button:hover { color: var(--ink); }
.stepper output, .stepper .stepper-value {
  font: 700 .875rem/1 var(--font-sans);
  font-variant-numeric: tabular-nums;
  text-align: center;
  min-width: 1.25rem;
}

/* 6. LIST ROWS ------------------------------------------------------------ */
.row { transition: background-color .12s ease; }
.row:hover { background: var(--hover); }

.task-row { transition: background-color .12s ease; }
.task-row:hover { background: var(--hover); }
.task-row.selected { background: var(--clover-tint); }
.task-row.selected:hover { background: #E7F1EA; }

/* 7. PROGRESS ------------------------------------------------------------- */
.progress-track { height: 8px; border-radius: var(--r-pill); background: var(--track); overflow: hidden; }
.progress-fill  { height: 100%; background: var(--clover); border-radius: var(--r-pill); transition: width .3s ease; }

/* 8. FLOATING ACTION BAR -------------------------------------------------- */
.float-bar {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  z-index: 40;
  transform: translateX(-50%) translateY(150%);
  transition: transform .18s ease;
  display: flex;
  align-items: center;
  gap: .25rem;
  background: var(--ink);
  border-radius: var(--r-pill);
  box-shadow: var(--shadow-float);
  padding: .5rem .75rem;
  max-width: 94vw;
  overflow-x: auto;
}
.float-bar.visible { transform: translateX(-50%) translateY(0); }

.bar-btn {
  padding: .45rem .85rem;
  border: 0;
  border-radius: var(--r-pill);
  background: none;
  font: 600 .85rem/1 var(--font-sans);
  color: rgba(255,255,255,.92);
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .12s ease;
}
.bar-btn:hover:not(:disabled) { background: rgba(255,255,255,.14); color: #fff; }
.bar-btn:disabled { opacity: .4; cursor: not-allowed; }

/* 9. CALENDAR BADGE (tear-off date) --------------------------------------- */
.cal-badge { position: relative; display: inline-block; }
.cal-badge.tilt { transform: rotate(-3deg); }
.cal-card {
  background: #fff;
  border-radius: 13px;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(37,48,46,.12), 0 10px 22px -10px rgba(37,48,46,.35);
  border: 1px solid rgba(37,48,46,.08);
  text-align: center;
  position: relative;
  z-index: 1;
}
.cal-badge::after {          /* page peeking out below */
  content: '';
  position: absolute;
  left: 10%; right: 10%; bottom: -4px;
  height: 10px;
  background: #fff;
  border-radius: 0 0 9px 9px;
  box-shadow: 0 1px 2px rgba(37,48,46,.12);
  opacity: .8;
}
.cal-band {
  background: var(--brick);
  color: #fff;
  position: relative;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.cal-hole {
  position: absolute; top: 3px;
  width: 7px; height: 7px;
  border-radius: var(--r-pill);
  background: rgba(0,0,0,.28);
  z-index: 2;
}
.cal-hole.l { left: 20%; }  .cal-hole.r { right: 20%; }
.cal-ring {
  position: absolute; top: -7px;
  width: 5px; height: 15px;
  border-radius: 4px;
  background: var(--ink);
  z-index: 3;
  box-shadow: inset -1px 0 0 rgba(255,255,255,.25);
}
.cal-ring.l { left: 20%; margin-left: 1px; }  .cal-ring.r { right: 20%; margin-right: 1px; }
.cal-perf { border-top: 2px dashed var(--border-faint); }

/* 10. NAVIGATION MENU (HEY-style dropdown card) ---------------------------- */
.menu-card {
  position: fixed;
  top: 4.5rem;
  left: 50%;
  z-index: 50;
  width: min(92vw, 33rem);
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  background: var(--ink);
  border-radius: 24px;
  box-shadow: 0 24px 60px -12px rgba(37,48,46,.55);
  display: none;
  opacity: 0;
  transform: translateX(-50%) translateY(-10px) scale(.98);
  transition: opacity .16s ease, transform .16s ease;
}
.menu-card.open  { display: block; }
.menu-card.shown { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }

.menu-tile {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .5rem;
  position: relative;
  padding: 1.15rem .5rem 1rem;
  border-radius: 14px;
  background: rgba(255,255,255,.10);
  color: #fff; font-weight: 600; font-size: .9rem;
  text-decoration: none;
  transition: background-color .12s ease;
}
.menu-tile:hover { background: rgba(255,255,255,.18); }
.menu-tile.active { background: rgba(0,0,0,.32); }
.menu-tile.soon { opacity: .45; pointer-events: none; }
.menu-tile .kbd-hint {
  position: absolute; top: .45rem; right: .6rem;
  font-size: .65rem; font-weight: 500; color: rgba(255,255,255,.55);
}
.menu-tile .soon-tag {
  position: absolute; top: .45rem; right: .6rem;
  font-size: .6rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  color: rgba(255,255,255,.6);
}

.menu-list-link {
  display: flex; align-items: center; gap: .75rem;
  padding: .5rem .25rem;
  color: rgba(255,255,255,.92); font-weight: 600; font-size: .95rem;
  border-radius: 10px;
  text-decoration: none;
}
.menu-list-link:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
.menu-list-link.active { color: #fff; text-decoration: underline; text-underline-offset: 4px; }

.menu-open-state .chevron { transform: rotate(180deg); }
.chevron { transition: transform .15s ease; }