/* ── Layout ───────────────────────────────────────────────── */
* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background: var(--pico-background-color);
}

/* ── Header ───────────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  background: var(--pico-card-background-color);
  border-bottom: 1px solid var(--pico-card-border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-header .logo {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--pico-color);
  white-space: nowrap;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--pico-muted-color);
  font-size: 0.9rem;
  flex: 1;
}

.breadcrumb .sep { opacity: 0.4; }

.breadcrumb .crumb {
  color: var(--pico-muted-color);
  text-decoration: none;
}

.breadcrumb .crumb.active {
  color: var(--pico-color);
  font-weight: 500;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.user-name {
  font-size: 0.875rem;
  color: var(--pico-muted-color);
}

.header-right button {
  margin: 0;
  padding: 0.4rem 0.9rem;
  font-size: 0.8rem;
}

/* ── Login ────────────────────────────────────────────────── */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: 2rem;
  background: var(--pico-card-background-color);
  border: 1px solid var(--pico-card-border-color);
  border-radius: 12px;
}

.login-card h2 {
  margin-top: 0;
  margin-bottom: 1.5rem;
  text-align: center;
}

.login-card .error-msg {
  color: var(--pico-del-color);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  padding: 0.5rem 0.75rem;
  background: color-mix(in srgb, var(--pico-del-color) 10%, transparent);
  border-radius: 6px;
}

/* ── Project Grid ─────────────────────────────────────────── */
.projects-page {
  padding: 2rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.projects-page h2 { margin-top: 0; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

.project-card {
  background: var(--pico-card-background-color);
  border: 1px solid var(--pico-card-border-color);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  transition: box-shadow 0.15s, border-color 0.15s, transform 0.1s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.project-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  border-color: var(--pico-primary-border);
  transform: translateY(-1px);
}

.project-card .project-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.project-card .project-identifier {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  background: var(--pico-primary-background);
  color: var(--pico-primary);
  border-radius: 4px;
  margin-bottom: 0.75rem;
}

.project-card .project-members {
  font-size: 0.8rem;
  color: var(--pico-muted-color);
}

/* ── Board ────────────────────────────────────────────────── */
.board-page {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 57px);
  overflow: hidden;
}

.filter-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background: var(--pico-card-background-color);
  border-bottom: 1px solid var(--pico-card-border-color);
  flex-shrink: 0;
}

.filter-bar button {
  margin: 0;
  padding: 0.4rem 0.9rem;
  font-size: 0.8rem;
}

.filter-bar .spacer { flex: 1; }

.board {
  display: flex;
  gap: 1rem;
  padding: 1rem 1.5rem;
  overflow-x: auto;
  flex: 1;
  align-items: flex-start;
}

/* ── Column ───────────────────────────────────────────────── */
.column {
  flex: 1;
  min-width: 250px;
  max-width: 350px;
  background: var(--pico-card-background-color);
  border: 1px solid var(--pico-card-border-color);
  border-radius: 10px;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  max-height: 100%;
}

.column-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.25rem 0.75rem;
  border-bottom: 1px solid var(--pico-card-border-color);
  margin-bottom: 0.5rem;
  flex-shrink: 0;
}

.column-header .col-name {
  font-weight: 600;
  font-size: 0.875rem;
}

.count-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  background: var(--pico-secondary-background);
  color: var(--pico-secondary-color);
  border-radius: 12px;
  min-width: 20px;
  text-align: center;
}

.column-body {
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.25rem 0;
  min-height: 80px;
}

/* ── Issue Card ───────────────────────────────────────────── */
.issue-card {
  background: var(--pico-background-color);
  border: 1px solid var(--pico-card-border-color);
  border-left: 3px solid #9ca3af;
  border-radius: 6px;
  padding: 0.625rem 0.75rem;
  cursor: grab;
  transition: box-shadow 0.15s, transform 0.1s;
  user-select: none;
}

.issue-card:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  transform: translateY(-1px);
}

.issue-card:active { cursor: grabbing; }

.card-identifier {
  font-size: 0.7rem;
  color: var(--pico-muted-color);
  font-weight: 500;
  margin-bottom: 0.25rem;
  letter-spacing: 0.03em;
}

.card-title {
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 0.5rem;
  word-break: break-word;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.card-due {
  font-size: 0.7rem;
  color: var(--pico-muted-color);
  margin-left: auto;
}

.card-due.overdue {
  color: #ef4444;
  font-weight: 600;
}

/* ── Avatar Circle ────────────────────────────────────────── */
.avatar-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  text-transform: uppercase;
}

/* ── View Toggle ──────────────────────────────────────────── */
.view-toggle {
  display: inline-flex;
  border: 1px solid var(--pico-card-border-color);
  border-radius: 6px;
  overflow: hidden;
}

.view-toggle button {
  margin: 0;
  border: none;
  border-radius: 0;
  padding: 0.35rem 0.7rem;
  font-size: 0.75rem;
  min-width: 3rem;
  border-right: 1px solid var(--pico-card-border-color);
}

.view-toggle button:last-child { border-right: none; }

.view-toggle button.active {
  background: var(--pico-primary);
  color: var(--pico-primary-inverse);
  border-color: var(--pico-primary);
}

/* ── List View ───────────────────────────────────────────── */
.list-view {
  flex: 1;
  overflow: auto;
  padding: 0.5rem 1.5rem 1.5rem;
}

.issue-list-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.issue-list-table thead th {
  position: sticky;
  top: 0;
  background: var(--pico-card-background-color);
  border-bottom: 2px solid var(--pico-card-border-color);
  padding: 0.6rem 0.75rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  white-space: nowrap;
  z-index: 1;
}

.sortable-header {
  cursor: pointer;
  user-select: none;
}

.sortable-header:hover { color: var(--pico-primary); }

.issue-list-row {
  cursor: pointer;
  transition: background 0.1s;
}

.issue-list-row:hover { background: var(--pico-primary-background); }

.issue-list-row td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--pico-card-border-color);
  vertical-align: middle;
}

.cell-id {
  font-size: 0.75rem;
  color: var(--pico-muted-color);
  font-weight: 500;
  white-space: nowrap;
  width: 1%;
}

.cell-title {
  font-weight: 500;
  max-width: 400px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cell-status { width: 1%; white-space: nowrap; }
.cell-priority { width: 1%; white-space: nowrap; }
.cell-assignee { white-space: nowrap; }
.cell-due { width: 1%; white-space: nowrap; }

.status-pill {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--pico-secondary-background);
  color: var(--pico-secondary-color);
}

.priority-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 0.3rem;
}

.overdue {
  color: #ef4444;
  font-weight: 600;
}

/* ── Drag States ──────────────────────────────────────────── */
.sortable-ghost {
  opacity: 0.4;
  border: 2px dashed var(--pico-primary-border);
  background: var(--pico-primary-background);
}

.sortable-chosen {
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  transform: rotate(1deg);
  cursor: grabbing !important;
}

.sortable-drag {
  opacity: 1;
}

/* ── Modal ────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
  animation: fadeIn 0.15s ease;
}

.modal {
  background: var(--pico-card-background-color);
  border-radius: 12px;
  padding: 1.75rem;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  animation: slideUp 0.2s ease;
}

.modal h3 {
  margin-top: 0;
  margin-bottom: 1.25rem;
  font-size: 1.1rem;
}

.modal-footer {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--pico-card-border-color);
}

.modal-footer .btn-delete {
  margin-right: auto;
  background: transparent;
  border-color: #ef4444;
  color: #ef4444;
}

.modal-footer .btn-delete:hover {
  background: #ef4444;
  color: #fff;
}

.modal-footer button { margin: 0; }

/* ── Loading ──────────────────────────────────────────────── */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--pico-card-border-color);
  border-top-color: var(--pico-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ── Toast ────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  padding: 0.7rem 1.1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  animation: slideInRight 0.25s ease forwards;
  pointer-events: auto;
  max-width: 320px;
}

.toast.info    { background: #3b82f6; }
.toast.success { background: #22c55e; }
.toast.error   { background: #ef4444; }
.toast.warning { background: #f97316; }
.toast.out     { animation: slideOutRight 0.25s ease forwards; }

/* ── Mobile Tabs ──────────────────────────────────────────── */
.board-tabs {
  display: none;
  gap: 0;
  background: var(--pico-card-background-color);
  border-bottom: 1px solid var(--pico-card-border-color);
  overflow-x: auto;
  flex-shrink: 0;
}

.board-tab {
  padding: 0.6rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  color: var(--pico-muted-color);
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.board-tab.active {
  color: var(--pico-primary);
  border-bottom-color: var(--pico-primary);
}

/* ── Animations ───────────────────────────────────────────── */
@keyframes spin        { to { transform: rotate(360deg); } }
@keyframes fadeIn      { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp     { from { transform: translateY(12px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes slideInRight  { from { transform: translateX(110%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes slideOutRight { from { transform: translateX(0); opacity: 1; } to { transform: translateX(110%); opacity: 0; } }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .app-header { padding: 0.75rem 1rem; }
  .user-name  { display: none; }

  .projects-page { padding: 1.25rem 1rem; }
  .project-grid { grid-template-columns: 1fr; }

  .filter-bar { padding: 0.6rem 1rem; }

  .board {
    padding: 0.75rem 1rem;
    overflow-x: hidden;
  }

  .board-tabs { display: flex; }

  /* On mobile: only the active column is visible */
  .column { display: none; min-width: 100%; max-width: 100%; }
  .column.tab-active { display: flex; }

  .modal { border-radius: 8px; padding: 1.25rem; }
  .modal-overlay { align-items: flex-end; padding: 0; }
  .modal {
    max-width: 100%;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    max-height: 85vh;
  }

  .list-view { padding: 0.5rem 0.75rem; }
  .cell-assignee, .cell-due { display: none; }
  .cell-title { max-width: 180px; }

  #toast-container { bottom: 1rem; right: 1rem; left: 1rem; }
  .toast { max-width: 100%; }
}