/* ===================================================
   tasks-app — Clare Media internal task viewer
   =================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sidebar-bg: #1e2330;
  --sidebar-hover: #2a3045;
  --sidebar-active: #3b4a6b;
  --sidebar-text: #b0bcd4;
  --sidebar-text-active: #ffffff;
  --sidebar-border: #2e3650;
  --accent: #4f80e1;
  --accent-light: #6b9af0;

  --bg: #f4f6f9;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text: #1a202c;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --col-backlog: #94a3b8;
  --col-todo: #3b82f6;
  --col-inprogress: #f59e0b;
  --col-review: #8b5cf6;
  --col-waiting: #06b6d4;
  --col-approved: #10b981;
  --col-done: #6b7280;
  --col-operations: #ef4444;
  --col-changes: #f97316;

  --tag-bg: #eff6ff;
  --tag-text: #3b82f6;
  --tag-border: #bfdbfe;

  --date-ok: #10b981;
  --date-warn: #f59e0b;
  --date-overdue: #ef4444;

  --sidebar-width: 220px;
  --subnav-width: 180px;
  --header-height: 56px;

  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== HEADER ===== */
header {
  height: var(--header-height);
  background: #13192a;
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 24px;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.logo {
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.logo span { color: var(--accent-light); }

.top-nav {
  display: flex;
  gap: 4px;
}

.top-nav button {
  background: none;
  border: none;
  color: var(--sidebar-text);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.top-nav button:hover { background: var(--sidebar-hover); color: #fff; }
.top-nav button.active { background: var(--sidebar-active); color: #fff; }

.header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.refresh-btn {
  background: none;
  border: 1px solid var(--sidebar-border);
  color: var(--sidebar-text);
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.refresh-btn:hover { background: var(--sidebar-hover); color: #fff; }

.last-updated {
  font-size: 0.75rem;
  color: var(--sidebar-text);
}

/* ===== LAYOUT ===== */
.app-body {
  display: flex;
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  flex-shrink: 0;
  position: fixed;
  left: 0;
  top: var(--header-height);
  bottom: 0;
  overflow-y: auto;
  padding: 12px 0;
  border-right: 1px solid var(--sidebar-border);
}

.sidebar-section-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
  padding: 12px 16px 4px;
}

.sidebar-item {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  cursor: pointer;
  color: var(--sidebar-text);
  font-size: 0.875rem;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
  user-select: none;
}
.sidebar-item:hover { background: var(--sidebar-hover); color: #fff; }
.sidebar-item.active {
  background: var(--sidebar-active);
  color: var(--sidebar-text-active);
  border-left-color: var(--accent);
}

/* ===== SUBNAV (board types) ===== */
.subnav {
  width: var(--subnav-width);
  background: #252d3f;
  flex-shrink: 0;
  position: fixed;
  left: var(--sidebar-width);
  top: var(--header-height);
  bottom: 0;
  overflow-y: auto;
  padding: 12px 0;
  border-right: 1px solid var(--sidebar-border);
}

.subnav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 14px;
  cursor: pointer;
  color: var(--sidebar-text);
  font-size: 0.82rem;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
  user-select: none;
}
.subnav-item:hover { background: var(--sidebar-hover); color: #fff; }
.subnav-item.active {
  background: rgba(79, 128, 225, 0.2);
  color: var(--accent-light);
  border-left-color: var(--accent);
}
.subnav-count {
  font-size: 0.7rem;
  background: rgba(255,255,255,0.08);
  color: var(--text-light);
  padding: 1px 6px;
  border-radius: 10px;
}

/* ===== MAIN CONTENT ===== */
.main {
  margin-left: calc(var(--sidebar-width) + var(--subnav-width));
  flex: 1;
  padding: 24px;
  min-width: 0;
}

/* ===== BOARD ===== */
.board-header {
  margin-bottom: 20px;
}
.board-header h1 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
}
.board-header p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.board-stats {
  display: flex;
  gap: 12px;
  margin-top: 10px;
  flex-wrap: wrap;
}
.stat-pill {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.stat-pill strong { color: var(--text); }

/* Columns container - scrollable horizontally */
.columns-wrapper {
  overflow-x: auto;
  padding-bottom: 12px;
}

.columns {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  min-width: max-content;
}

.column {
  width: 280px;
  background: var(--card-bg);
  border-radius: 10px;
  border: 1px solid var(--border);
  overflow: hidden;
  flex-shrink: 0;
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
}
.column-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}
.column-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.column-name {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text);
}
.column-count {
  font-size: 0.72rem;
  background: var(--bg);
  padding: 1px 7px;
  border-radius: 10px;
  color: var(--text-muted);
  font-weight: 600;
}
.collapse-icon {
  font-size: 0.7rem;
  color: var(--text-light);
  transition: transform 0.2s;
}
.column.collapsed .collapse-icon { transform: rotate(-90deg); }

.column-body {
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.column.collapsed .column-body { display: none; }

/* ===== TASK CARDS ===== */
.task-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 10px 12px;
  font-size: 0.82rem;
  transition: box-shadow 0.15s;
}
.task-card:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.task-text {
  line-height: 1.45;
  color: var(--text);
  word-break: break-word;
}
.task-text.done {
  text-decoration: line-through;
  color: var(--text-muted);
}

.owner-emoji {
  font-size: 1rem;
  margin-right: 2px;
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 7px;
}

.tag {
  font-size: 0.68rem;
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--tag-border);
  padding: 1px 6px;
  border-radius: 10px;
  font-weight: 500;
}

.task-date {
  font-size: 0.68rem;
  padding: 1px 6px;
  border-radius: 10px;
  font-weight: 500;
}
.task-date.ok { background: #ecfdf5; color: var(--date-ok); }
.task-date.warn { background: #fffbeb; color: var(--date-warn); }
.task-date.overdue { background: #fef2f2; color: var(--date-overdue); }

.task-notes {
  margin-top: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.4;
  border-left: 2px solid var(--border);
  padding-left: 7px;
}

.empty-col {
  font-size: 0.78rem;
  color: var(--text-light);
  text-align: center;
  padding: 12px 0;
  font-style: italic;
}

/* ===== DONE COLUMN special style ===== */
.column.col-done .column-header { background: #f8fafc; }
.column.col-done .task-card { opacity: 0.65; }

/* ===== WELCOME / EMPTY STATE ===== */
.welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  color: var(--text-muted);
}
.welcome h2 { font-size: 1.4rem; color: var(--text); margin-bottom: 8px; }
.welcome p { font-size: 0.9rem; }

/* ===== LOADING ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ===== SCROLLBARS ===== */
.sidebar::-webkit-scrollbar,
.subnav::-webkit-scrollbar,
.columns-wrapper::-webkit-scrollbar { height: 4px; width: 4px; }
.sidebar::-webkit-scrollbar-thumb,
.subnav::-webkit-scrollbar-thumb,
.columns-wrapper::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  :root {
    --sidebar-width: 180px;
    --subnav-width: 150px;
  }
}

@media (max-width: 640px) {
  .sidebar, .subnav { position: static; width: 100%; height: auto; }
  .app-body { flex-direction: column; }
  .main { margin-left: 0; padding: 12px; }
  .columns { flex-direction: column; min-width: unset; }
  .column { width: 100%; }
}

/* Column colour accents */
.dot-backlog { background: var(--col-backlog); }
.dot-todo { background: var(--col-todo); }
.dot-inprogress { background: var(--col-inprogress); }
.dot-review { background: var(--col-review); }
.dot-waiting { background: var(--col-waiting); }
.dot-approved { background: var(--col-approved); }
.dot-done { background: var(--col-done); }
.dot-operations { background: var(--col-operations); }
.dot-changes { background: var(--col-changes); }
.dot-default { background: var(--accent); }