/*
 * Kanban Board — Stylesheet
 * Dibuat oleh: lautandigital.id
 * Website: https://lautandigital.id
 */

/* =====================
   Reset & Base
   ===================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --clr-bg:          #0f172a;
  --clr-surface:     #1e293b;
  --clr-surface-2:   #273449;
  --clr-border:      #334155;
  --clr-text:        #e2e8f0;
  --clr-text-muted:  #94a3b8;
  --clr-primary:     #6366f1;
  --clr-primary-h:   #818cf8;
  --clr-danger:      #ef4444;
  --clr-danger-h:    #f87171;
  --clr-success:     #22c55e;

  --clr-todo:        #6366f1;
  --clr-inprogress:  #f59e0b;
  --clr-review:      #3b82f6;
  --clr-done:        #22c55e;

  --clr-prio-low:    #22c55e;
  --clr-prio-medium: #f59e0b;
  --clr-prio-high:   #ef4444;

  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  14px;

  --shadow-card: 0 2px 8px rgba(0,0,0,.35);
  --shadow-modal: 0 8px 40px rgba(0,0,0,.6);

  --transition: .18s ease;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--clr-primary-h);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

/* =====================
   Header
   ===================== */
.app-header {
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.app-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.5px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--clr-text);
}

.app-title .icon {
  color: var(--clr-primary);
  font-size: 1.4rem;
}

/* =====================
   Buttons
   ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--clr-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--clr-primary-h); }

.btn-ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
}
.btn-ghost:hover {
  background: var(--clr-surface-2);
  color: var(--clr-text);
}

.btn-danger {
  background: var(--clr-danger);
  color: #fff;
}
.btn-danger:hover { background: var(--clr-danger-h); }

/* =====================
   Board Layout
   ===================== */
.board-container {
  flex: 1;
  overflow-x: auto;
  padding: 28px 24px;
}

.board {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  min-width: max-content;
}

/* =====================
   Columns
   ===================== */
.column {
  width: 290px;
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.column.drag-over {
  box-shadow: 0 0 0 2px var(--clr-primary);
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 10px;
  border-bottom: 2px solid transparent;
}

#col-todo      .column-header { border-color: var(--clr-todo); }
#col-inprogress .column-header { border-color: var(--clr-inprogress); }
#col-review    .column-header { border-color: var(--clr-review); }
#col-done      .column-header { border-color: var(--clr-done); }

.column-title {
  font-size: .9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--clr-text-muted);
}

.badge {
  font-size: .72rem;
  font-weight: 700;
  background: var(--clr-surface-2);
  color: var(--clr-text-muted);
  border-radius: 20px;
  padding: 2px 9px;
  min-width: 26px;
  text-align: center;
}

/* =====================
   Card List & Drop Zone
   ===================== */
.card-list {
  padding: 10px 10px 4px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 60px;
  flex: 1;
}

.card-list.drag-active {
  background: rgba(99, 102, 241, .05);
  border-radius: var(--radius-md);
}

/* =====================
   Cards
   ===================== */
.card {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  cursor: grab;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  user-select: none;
  position: relative;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0,0,0,.4);
}

.card.dragging {
  opacity: .4;
  cursor: grabbing;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 6px;
}

.card-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-text);
  line-height: 1.35;
  flex: 1;
}

.card-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition);
  flex-shrink: 0;
}
.card:hover .card-actions { opacity: 1; }

.card-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--clr-text-muted);
  font-size: .85rem;
  padding: 2px 5px;
  border-radius: 4px;
  line-height: 1;
  transition: color var(--transition), background var(--transition);
}
.card-btn:hover { background: var(--clr-surface); }
.card-btn.edit:hover { color: var(--clr-primary-h); }
.card-btn.delete:hover { color: var(--clr-danger); }

.card-desc {
  font-size: .78rem;
  color: var(--clr-text-muted);
  line-height: 1.45;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin-top: 4px;
}

.priority-tag {
  font-size: .7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.priority-tag.low    { background: rgba(34,197,94,.15);  color: var(--clr-prio-low); }
.priority-tag.medium { background: rgba(245,158,11,.15); color: var(--clr-prio-medium); }
.priority-tag.high   { background: rgba(239,68,68,.15);  color: var(--clr-prio-high); }

.due-date {
  font-size: .72rem;
  color: var(--clr-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}
.due-date.overdue { color: var(--clr-danger); }

/* Drop placeholder */
.drop-placeholder {
  height: 70px;
  border: 2px dashed var(--clr-primary);
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, .07);
  pointer-events: none;
}

/* =====================
   Add-card inline button
   ===================== */
.btn-add-card {
  display: block;
  width: 100%;
  background: none;
  border: none;
  border-top: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  font-size: .82rem;
  font-weight: 500;
  padding: 10px 16px;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}
.btn-add-card:hover {
  color: var(--clr-text);
  background: var(--clr-surface-2);
}

/* =====================
   Modal
   ===================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease;
  padding: 16px;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-modal);
  transform: translateY(16px) scale(.97);
  transition: transform .2s ease;
}

.modal-overlay.open .modal { transform: translateY(0) scale(1); }

.modal-sm { max-width: 360px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--clr-border);
}

.modal-title {
  font-size: 1rem;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--clr-text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color var(--transition), background var(--transition);
}
.modal-close:hover {
  color: var(--clr-text);
  background: var(--clr-surface-2);
}

.modal-body {
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal-body p {
  font-size: .9rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 22px 18px;
  border-top: 1px solid var(--clr-border);
}

/* =====================
   Form Controls
   ===================== */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
}

.required { color: var(--clr-danger); }

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: var(--clr-text);
  font-size: .9rem;
  font-family: inherit;
  padding: 9px 12px;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, .2);
}

.form-group textarea { resize: vertical; }

.form-group select option { background: var(--clr-surface); }

.form-group input.error { border-color: var(--clr-danger); }

/* =====================
   Footer
   ===================== */
.app-footer {
  text-align: center;
  padding: 16px;
  font-size: .78rem;
  color: var(--clr-text-muted);
  border-top: 1px solid var(--clr-border);
}

/* =====================
   Scrollbar
   ===================== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-text-muted); }

/* =====================
   Responsive
   ===================== */
@media (max-width: 640px) {
  .board-container { padding: 16px 12px; }
  .column { width: 260px; }
  .form-row { grid-template-columns: 1fr; }
}