/* ============================================================
   DESIGN TOKENS & PALETTES
   ============================================================ */

/* 1. Classic Parchment (Default) */
:root[data-theme="parchment"] {
  --bg-base: #f5eedb;
  --bg-surface: #ede3cb;
  --bg-surface-2: #e2d3b5;
  --border: rgba(60, 48, 36, 0.14);
  --border-strong: rgba(60, 48, 36, 0.28);
  --text-primary: #2b221a;
  --text-secondary: #6e5c4d;
  --accent: #923414;
  --accent-soft: rgba(146, 52, 20, 0.1);
  --accent-contrast: #ffffff;
  --weekend-color: #b91c1c;
  --font-serif: 'Noto Serif Bengali', serif;
  --font-sans: 'Hind Siliguri', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* 2. Terracotta Clay */
:root[data-theme="terracotta"] {
  --bg-base: #f7ebe6;
  --bg-surface: #eed7cf;
  --bg-surface-2: #e2c4ba;
  --border: rgba(94, 38, 22, 0.15);
  --border-strong: rgba(94, 38, 22, 0.3);
  --text-primary: #381a12;
  --text-secondary: #744c41;
  --accent: #b43d1b;
  --accent-soft: rgba(180, 61, 27, 0.12);
  --accent-contrast: #ffffff;
  --weekend-color: #dc2626;
  --font-serif: 'Noto Serif Bengali', serif;
  --font-sans: 'Hind Siliguri', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* 3. Deep Obsidian (Dark) */
:root[data-theme="obsidian"] {
  --bg-base: #0b0f17;
  --bg-surface: #121824;
  --bg-surface-2: #1a2333;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.2);
  --text-primary: #f0f4fc;
  --text-secondary: #8c9bb3;
  --accent: #2dd4bf;
  --accent-soft: rgba(45, 212, 191, 0.12);
  --accent-contrast: #04211d;
  --weekend-color: #f87171;
  --font-serif: 'Noto Serif Bengali', serif;
  --font-sans: 'Hind Siliguri', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* 4. Minimalist Monospace */
:root[data-theme="monospace"] {
  --bg-base: #141517;
  --bg-surface: #1e2023;
  --bg-surface-2: #282a2e;
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.22);
  --text-primary: #e4e6eb;
  --text-secondary: #9aa0a6;
  --accent: #fbbf24;
  --accent-soft: rgba(251, 191, 36, 0.12);
  --accent-contrast: #1f1402;
  --weekend-color: #f87171;
  --font-serif: 'JetBrains Mono', monospace;
  --font-sans: 'JetBrains Mono', monospace;
  --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; }
html, body {
  height: 100%;
}
body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-serif);
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden;
}

.bg-theme { background-color: var(--bg-base); }
.bg-surface-1 { background-color: var(--bg-surface); }
.bg-surface-2 { background-color: var(--bg-surface-2); }
.text-theme { color: var(--text-primary); }
.text-muted { color: var(--text-secondary); }
.text-accent { color: var(--accent); }
.text-weekend { color: var(--weekend-color); }
.border-theme { border-color: var(--border); }
.bg-accent-soft { background-color: var(--accent-soft); }
.font-sans { font-family: var(--font-sans); }
.font-mono { font-family: var(--font-mono); }
.font-serif { font-family: var(--font-serif); }

.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* Masthead & Navigation */
.masthead-glass {
  background-color: var(--bg-surface);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.today-banner-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.65rem;
  background-color: var(--bg-surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--text-primary);
  transition: all 0.2s ease;
  white-space: nowrap;
}
@media (min-width: 640px) {
  .today-banner-pill { font-size: 0.82rem; padding: 0.35rem 0.85rem; }
}
.today-banner-pill:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.btn-tool {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.35rem 0.65rem;
  background-color: var(--bg-surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.18s ease;
}
.btn-tool:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.theme-select {
  background-color: var(--bg-surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.5rem;
  font-size: 0.75rem;
  font-family: var(--font-sans);
  cursor: pointer;
  outline: none;
}
.theme-select:focus { border-color: var(--accent); }

/* Navigation Tabs (Desktop) */
.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.75rem;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.nav-tab:hover { color: var(--text-primary); }
.nav-tab.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Calendar Controls */
.cal-nav-btn {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background-color: var(--bg-surface-2);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.18s ease;
}
@media (min-width: 640px) {
  .cal-nav-btn { width: 32px; height: 32px; }
}
.cal-nav-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.cal-title-pill {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px 6px;
  border-radius: 6px;
  background: transparent;
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.18s ease;
}
@media (min-width: 640px) {
  .cal-title-pill { font-size: 1.3rem; padding: 3px 8px; }
}
.cal-title-pill:hover, .cal-title-pill.is-active {
  background-color: var(--bg-surface-2);
}

/* Calendar Days Grid */
.cal-cell {
  position: relative;
  min-height: 48px;
  max-height: 82px;
  height: auto;
  aspect-ratio: 1 / 0.95;
  padding: 4px 5px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background-color: var(--bg-base);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.15s ease, border-color 0.15s ease;
  user-select: none;
}
@media (min-width: 640px) {
  .cal-cell {
    min-height: 60px;
    max-height: 94px;
    padding: 6px 8px;
    border-radius: 10px;
  }
}
.cal-cell:hover:not(.is-empty) {
  transform: translateY(-1.5px);
  border-color: var(--accent);
  box-shadow: 0 4px 12px -2px var(--accent-soft);
}
.cal-cell.is-empty {
  opacity: 0.12;
  background-color: transparent;
  border-color: transparent;
  cursor: default;
  pointer-events: none;
}
.cal-cell.is-weekend .cal-bn-day {
  color: var(--weekend-color);
}
.cal-cell.is-today {
  border-color: var(--accent) !important;
  box-shadow: inset 0 0 0 1.5px var(--accent);
  background-color: var(--accent-soft);
}
.cal-cell.is-holiday {
  background-color: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.28);
}

.cal-bn-day {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1;
}
@media (min-width: 640px) {
  .cal-bn-day { font-size: 1.35rem; }
}
.cal-en-day {
  font-size: 0.6rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}
@media (min-width: 640px) {
  .cal-en-day { font-size: 0.72rem; }
}

/* Indicators in Cell */
.cell-badge-pill {
  font-size: 0.62rem;
  padding: 1px 4px;
  border-radius: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.badge-holiday { background-color: rgba(239, 68, 68, 0.2); color: #dc2626; font-weight: 600; }
.badge-observance { background-color: rgba(59, 130, 246, 0.18); color: #2563eb; font-weight: 500; }

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
}
.dot-holiday { background-color: #ef4444; }
.dot-milestone { background-color: #3b82f6; }
.dot-note { background-color: #10b981; }

/* Subview Picker Buttons */
.cal-picker-btn {
  padding: 0.55rem 0.35rem;
  text-align: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  background-color: var(--bg-surface-2);
  color: var(--text-primary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.cal-picker-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.cal-picker-btn.is-selected {
  background-color: var(--accent);
  color: var(--accent-contrast);
  border-color: var(--accent);
  font-weight: 700;
}

/* ============================================================
   SEGMENTED DATE INPUTS WITH PERMANENT SLASHES & PICKERS
   ============================================================ */
.segmented-date-wrapper {
  display: flex;
  align-items: center;
  background-color: var(--bg-surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.75rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.segmented-date-wrapper:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}
.seg-input {
  background: transparent;
  outline: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  text-align: center;
}
.seg-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.45;
  font-weight: 500;
}
.seg-divider {
  user-select: none;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-secondary);
  padding: 0 0.35rem;
  opacity: 0.6;
}
.seg-picker-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem;
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  background: transparent;
  border: none;
  transition: all 0.15s ease;
}
.seg-picker-btn:hover {
  color: var(--accent);
  background-color: var(--accent-soft);
}

/* Modal Cell in Bengali Picker */
.bn-picker-cell {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}
.bn-picker-cell:hover:not(.is-empty) {
  background-color: var(--bg-surface-2);
  border-color: var(--accent);
  color: var(--accent);
}
.bn-picker-cell.is-selected {
  background-color: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
}

/* Form Styles */
.form-input-field {
  width: 100%;
  padding: 0.45rem 0.75rem;
  border-radius: 6px;
  background-color: var(--bg-surface-2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  outline: none;
}
.form-input-field:focus { border-color: var(--accent); }

.btn-primary {
  background-color: var(--accent);
  color: var(--accent-contrast);
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity 0.2s ease;
}
.btn-primary:hover { opacity: 0.92; }

@media print {
  body { background: #fff !important; color: #000 !important; }
  header, main, #dayDrawerWrapper, #bnPickerModalWrapper { display: none !important; }
  #printSheet { display: block !important; }
}