/* ═══════════════════════════════════════════════════════════════════════════
   SLICK — style.css
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Theme Variables ───────────────────────────────────────────────────────── */
:root {
  --bg:           #f4f5fb;
  --header:       #ffffff;
  --header-border:#e5e7eb;
  --column:       #e8eaf4;
  --card:         #ffffff;
  --input-bg:     #f0f1f8;
  --modal:        #f8f9fc;
  --modal-border: #d1d5db;
  --t1:           #1e2130;
  --t2:           #4b5563;
  --t3:           #9ca3af;
  --br:           #d1d5db;
  --br2:          #e5e7eb;
  --shadow:       0 2px 8px rgba(0,0,0,0.08);
}

html.dark {
  --bg:           #0f1117;
  --header:       #0d0f18;
  --header-border:#1a2035;
  --column:       #141621;
  --card:         #1e2130;
  --input-bg:     #0c0e16;
  --modal:        #1a1d2e;
  --modal-border: #2d3748;
  --t1:           #e2e8f0;
  --t2:           #94a3b8;
  --t3:           #6b7280;
  --br:           #2d3748;
  --br2:          #1a2035;
  --shadow:       0 2px 8px rgba(0,0,0,0.4);
}

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

body {
  background: var(--bg);
  color: var(--t1);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 15px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ────────────────────────────────────────────────────────────────── */
#app-header {
  background: var(--header);
  border-bottom: 1px solid var(--header-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 24px;
  box-shadow: var(--shadow);
  transition: background 0.3s, border-color 0.3s;
}

/* ── Content area ──────────────────────────────────────────────────────────── */
#content-area {
  flex: 1;
  display: flex;
  flex-direction: row;
  overflow: hidden;
  min-height: 0;
}

/* ── Board wrap ────────────────────────────────────────────────────────────── */
#board-wrap {
  display: flex;
  gap: 20px;
  padding: 20px 24px;
  overflow: hidden;
  flex: 1;
  min-height: 0;
  flex-direction: row;
}

/* ── Column sections ───────────────────────────────────────────────────────── */
.board-col {
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  overflow: hidden;
  background: var(--column);
  transition: background 0.3s;
  flex: 1;
  height: 100%;
}

.col-todo  { border-top: 3px solid #6366f1; }
.col-doing { border-top: 3px solid #a855f7; }
.col-done  { border-top: 3px solid #22c55e; }

.col-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--br2);
  flex-shrink: 0;
}

.col-cards {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
}

/* Section labels inside columns */
.section-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 4px 2px;
  margin-top: 4px;
  user-select: none;
  pointer-events: none;   /* don't interfere with drag */
  flex-shrink: 0;
}
.section-label-line {
  flex: 1;
  height: 1px;
  opacity: 0.3;
}

/* ── Task cards ────────────────────────────────────────────────────────────── */
.task-card {
  background: var(--card);
  border-radius: 10px;
  padding: 12px;
  cursor: grab;
  transition: transform 0.15s, box-shadow 0.15s, background 0.3s;
  box-shadow: var(--shadow);
  flex-shrink: 0;
}
.task-card:active  { cursor: grabbing; }
.task-card:hover   { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.15); }

.sortable-ghost { opacity: 0.3; border: 2px dashed #6366f1 !important; background: var(--column) !important; border-radius: 10px; }
.sortable-drag  { opacity: 0.9; box-shadow: 0 20px 40px rgba(0,0,0,0.3); }

/* Priority borders */
.priority-high   { border-left: 4px solid #ef4444; }
.priority-medium { border-left: 4px solid #f59e0b; }
.priority-low    { border-left: 4px solid #22c55e; }

/* Priority badges */
.badge-high   { background: #fee2e2; color: #991b1b; }
.badge-medium { background: #fef3c7; color: #92400e; }
.badge-low    { background: #d1fae5; color: #065f46; }
html.dark .badge-high   { background: #7f1d1d; color: #fca5a5; }
html.dark .badge-medium { background: #78350f; color: #fcd34d; }
html.dark .badge-low    { background: #14532d; color: #86efac; }

/* Overdue card */
.task-overdue { background: rgba(239,68,68,0.1) !important; box-shadow: 0 0 0 1px rgba(239,68,68,0.35); }

/* Carried-over entrance */
@keyframes carriedIn { from { opacity:0; transform:translateX(20px); } to { opacity:1; transform:translateX(0); } }
.carried-in { animation: carriedIn 0.45s ease forwards; }

/* ── Floating calendar button ──────────────────────────────────────────────── */
#cal-float-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 45;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #4f46e5;
  color: #fff;
  font-size: 20px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(79,70,229,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s, box-shadow 0.15s;
}
#cal-float-btn:hover { transform: scale(1.1); box-shadow: 0 6px 22px rgba(79,70,229,0.55); }
#cal-float-btn.active { background: #6366f1; }

/* ── Calendar panel (fixed, bottom-left) ───────────────────────────────────── */
#calendar-panel {
  position: fixed;
  bottom: 78px;
  right: 20px;
  z-index: 44;
  width: 320px;
  background: var(--modal);
  border: 1px solid var(--modal-border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  display: none;
  transition: background 0.3s;
}
#calendar-panel.open { display: block; }

.cal-cell {
  aspect-ratio: 1;
  border-radius: 8px;
  cursor: default;
  transition: transform 0.1s, box-shadow 0.1s;
  position: relative;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 6px;
  color: var(--t1);
}
.cal-cell.has-tasks { cursor: pointer; }
.cal-cell.has-tasks:hover { transform: scale(1.1); z-index: 2; box-shadow: 0 4px 12px rgba(99,102,241,0.3); }
.cal-today { box-shadow: 0 0 0 2px #6366f1 !important; }
.cal-other-month { opacity: 0.35; }

#cal-tooltip {
  position: fixed;
  z-index: 200;
  pointer-events: none;
  background: var(--modal);
  border: 1px solid var(--modal-border);
  border-radius: 10px;
  padding: 10px 14px;
  max-width: 240px;
  font-size: 13px;
  color: var(--t1);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  display: none;
}

/* ── Modals ────────────────────────────────────────────────────────────────── */
.modal-overlay { backdrop-filter: blur(4px); }
.theme-modal {
  background: var(--modal);
  border: 1px solid var(--modal-border);
  color: var(--t1);
  transition: background 0.3s;
}
.theme-input {
  background: var(--input-bg);
  border: 1px solid var(--br);
  color: var(--t1);
  border-radius: 10px;
  transition: border-color 0.15s, background 0.3s;
}
.theme-input:focus { outline: none; border-color: #6366f1; }
.theme-border { border-color: var(--br2); }

/* ── Timeline pills ────────────────────────────────────────────────────────── */
.timeline-pill {
  transition: all 0.15s;
  white-space: nowrap;
  border: 1px solid;
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 13px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ── Header controls ───────────────────────────────────────────────────────── */
.header-btn {
  padding: 7px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity 0.15s, background 0.15s;
}
.header-btn:hover { opacity: 0.85; }

/* ── Scrollbar ─────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--br); border-radius: 3px; }

/* ── Start-shift sweep ─────────────────────────────────────────────────────── */
@keyframes colGlow {
  0%   { box-shadow: none; }
  40%  { box-shadow: 0 0 50px var(--glow-color); }
  100% { box-shadow: none; }
}
.glow-todo  { --glow-color: rgba(99,102,241,0.8);  animation: colGlow 0.75s ease forwards; }
.glow-doing { --glow-color: rgba(168,85,247,0.8);  animation: colGlow 0.75s ease forwards; }
.glow-done  { --glow-color: rgba(34,197,94,0.8);   animation: colGlow 0.75s ease forwards; }

/* ── Banners ───────────────────────────────────────────────────────────────── */
#handover-banner, #view-banner {
  margin: 12px 24px 0;
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 14px;
  flex-shrink: 0;
}
#view-banner {
  display: none;
  align-items: center;
  justify-content: space-between;
  background: var(--input-bg);
  border: 1px solid var(--br);
  color: var(--t2);
}
#view-banner.show { display: flex; }