:root {
  color-scheme: dark;
  --bg: #0f172a;
  --panel: #111827;
  --panel-soft: #1f2937;
  --text: #f8fafc;
  --muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.18);
  --accent: #38bdf8;
  --danger: #fb7185;
  --ok: #22c55e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, #020617 0%, var(--bg) 100%);
  color: var(--text);
  font: 14px/1.45 Inter, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  overscroll-behavior: none;
}
#app {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 14px 28px;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.eyebrow { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
h1 { margin: 2px 0 0; font-size: 28px; }
.banner, .user-card {
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.75);
  padding: 12px 14px;
  border-radius: 14px;
  margin-bottom: 12px;
}
.banner.error { border-color: rgba(251, 113, 133, 0.35); color: #fecdd3; }
.banner.ok { border-color: rgba(34, 197, 94, 0.35); color: #bbf7d0; }
.hidden { display: none !important; }

/* Board */
.board {
  display: grid;
  grid-template-columns: repeat(4, minmax(240px, 1fr));
  gap: 14px;
  align-items: start;
}
.column {
  border: 1px solid var(--border);
  background: rgba(17, 24, 39, 0.92);
  border-radius: 18px;
  overflow: hidden;
  min-height: 240px;
  transition: box-shadow 0.2s;
}
.column-header {
  padding: 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}
.column-header h2 { margin: 0; font-size: 16px; }
.column-meta { color: var(--muted); font-size: 12px; margin-top: 4px; }
.column-body { padding: 10px; display: flex; flex-direction: column; gap: 8px; min-height: 120px; }
.drop-zone--over {
  background: rgba(56, 189, 248, 0.06);
  outline: 2px dashed rgba(56, 189, 248, 0.35);
  border-radius: 10px;
}

/* Card */
.card {
  border: 1px solid var(--border);
  background: var(--panel-soft);
  border-radius: 14px;
  padding: 12px;
  box-shadow: 0 4px 14px rgba(0,0,0,.14);
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s, opacity 0.12s;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
}
.card:active { transform: scale(0.97); box-shadow: 0 2px 8px rgba(0,0,0,.2); }
.card--dragging { opacity: 0.3; pointer-events: none; }
.card--ghost {
  border: 1px solid rgba(56, 189, 248, 0.45) !important;
  background: #1e293b !important;
  box-shadow: 0 16px 40px rgba(0,0,0,.5) !important;
  transform: rotate(1.5deg) scale(1.03);
}
.card-topline { display:flex; justify-content:space-between; gap:8px; color:var(--muted); font-size:12px; margin-bottom: 6px; }
.title { margin: 0 0 8px; font-size: 14px; line-height: 1.4; }
.card-meta { display: flex; justify-content: space-between; align-items: center; gap: 6px; }
.assignee { color: var(--muted); font-size: 12px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-labels { display: flex; gap: 4px; flex-shrink: 0; }
.label-pip { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

.priority[data-priority="urgent"] { color: #fb7185; }
.priority[data-priority="high"] { color: #f59e0b; }
.priority[data-priority="medium"] { color: #fde047; }
.priority[data-priority="low"] { color: #34d399; }

/* Epic grouping */
.epic-header {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); padding: 4px 2px 2px;
  margin-top: 4px;
}
.epic-header:first-child { margin-top: 0; }
.epic-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.epic-count { margin-left: auto; background: var(--border); border-radius: 100px; padding: 0 6px; }

.empty { color: var(--muted); font-style: italic; padding: 10px 4px; }

/* Buttons */
button {
  border-radius: 10px; border: 1px solid var(--border);
  background: #0b1220; color: var(--text); padding: 10px 12px; font: inherit;
  cursor: pointer;
}
button.ghost { background: transparent; }

/* Modal */
.modal {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; flex-direction: column; justify-content: flex-end;
}
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(4px);
}
.modal-sheet {
  position: relative; z-index: 1;
  background: #131c2e;
  border-radius: 24px 24px 0 0;
  max-height: 90vh;
  overflow-y: auto;
  padding: 0 0 env(safe-area-inset-bottom, 24px);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}
.modal-sheet--open { transform: translateY(0); }
.modal-handle {
  width: 40px; height: 4px; border-radius: 2px;
  background: var(--border);
  margin: 12px auto 0;
}
.modal-header {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--border);
}
.modal-meta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.modal-identifier { color: var(--muted); font-size: 13px; font-weight: 600; }
.modal-priority { font-size: 12px; font-weight: 600; }
.modal-priority[data-priority="urgent"] { color: #fb7185; }
.modal-priority[data-priority="high"] { color: #f59e0b; }
.modal-priority[data-priority="medium"] { color: #fde047; }
.modal-priority[data-priority="low"] { color: #34d399; }
.modal-close {
  background: var(--panel-soft); border: none; color: var(--muted);
  width: 32px; height: 32px; border-radius: 50%; padding: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; flex-shrink: 0;
}
.modal-body { padding: 18px; }
.modal-title { margin: 0 0 14px; font-size: 18px; line-height: 1.4; }
.modal-labels { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.label-badge {
  font-size: 12px; font-weight: 600;
  padding: 3px 10px; border-radius: 100px;
  border: 1px solid;
}
.modal-description {
  font-size: 14px; line-height: 1.6; color: #cbd5e1;
  margin-bottom: 18px;
  padding: 14px; background: var(--panel-soft);
  border-radius: 12px; border: 1px solid var(--border);
}
.modal-description p { margin: 0 0 8px; }
.modal-description p:last-child { margin-bottom: 0; }
.modal-info-grid { margin-bottom: 20px; }
.info-row {
  display: flex; gap: 12px; justify-content: space-between;
  padding: 8px 0; border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.info-row:last-child { border-bottom: none; }
.info-key { color: var(--muted); }
.info-val { font-weight: 500; text-align: right; }
.modal-move-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 10px; }
.modal-move-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.move-btn {
  flex: 1; min-width: 100px; padding: 12px 16px;
  background: var(--panel-soft); border: 1px solid var(--border);
  border-radius: 14px; color: var(--text); font-size: 14px;
  cursor: pointer; text-align: center;
  transition: background 0.15s;
}
.move-btn:active { background: rgba(56, 189, 248, 0.12); border-color: var(--accent); }

/* Responsive */
@media (max-width: 1100px) {
  .board { grid-template-columns: repeat(2, minmax(220px, 1fr)); }
}
@media (max-width: 720px) {
  #app { padding: 10px 8px 20px; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .board { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  h1 { font-size: 22px; }
  .column-header { padding: 10px 12px; }
  .column-header h2 { font-size: 14px; }
  .card { padding: 10px; }
  .title { font-size: 13px; }
}
@media (max-width: 440px) {
  .board { grid-template-columns: 1fr; }
}