/* ProTask - Pure CSS Layout using Flex/Grid. Modern, responsive, no frameworks. */

:root {
  --bg: #0b0c10;
  --bg-soft: #13151b;
  --text: #e6edf3;
  --muted: #9aa7b2;
  --accent: #4f8cff;
  --accent-2: #22c55e;
  --danger: #ef4444;
  --warning: #eab308;
  --card: #111827;
  --border: #1f2937;
  --surface: #0f172a;
  --shadow: rgba(0,0,0,0.3);
}

body.theme-light {
  --bg: #f6f7fb;
  --bg-soft: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --accent: #2563eb;
  --accent-2: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --card: #ffffff;
  --border: #e2e8f0;
  --surface: #f1f5f9;
  --shadow: rgba(0,0,0,0.08);
}

html,body {
  margin: 0;
  padding: 0;
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  height: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-layout { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.app-sidebar { background: var(--bg-soft); border-right: 1px solid var(--border); padding: 16px; position: sticky; top: 0; height: 100vh; }
.app-main { background: var(--surface); min-height: calc(100vh - 48px); }
.app-footer { background: var(--bg-soft); border-top: 1px solid var(--border); padding: 8px 16px; }
.container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 12px; }
.spacer { flex: 1; }

.brand { display:flex; align-items:center; gap:12px; padding: 8px 0 16px; border-bottom:1px solid var(--border); margin-bottom: 16px; }
.brand .logo { width:36px; height:36px; background: var(--accent); color:#fff; display:grid; place-items:center; border-radius:8px; font-weight:700; }
.brand .title { font-weight:700; letter-spacing:0.3px; }

.nav { display:flex; flex-direction:column; gap:8px; }
.nav-link { padding:10px 12px; border-radius:8px; color: var(--text); display:flex; gap:8px; align-items:center; }
.nav-link:hover { background: var(--card); text-decoration:none; }
.user-mini { margin-top:auto; padding-top:16px; border-top:1px solid var(--border); color: var(--muted); font-size: 12px; }

.app-main { padding: 20px; }
.card { background: var(--card); border:1px solid var(--border); border-radius:12px; box-shadow: 0 10px 20px var(--shadow); }
.card-header { padding: 14px 16px; border-bottom:1px solid var(--border); font-weight:600; display:flex; align-items:center; justify-content:space-between; }
.card-body { padding: 16px; }

.grid { display:grid; gap:16px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } .app-layout { grid-template-columns: 72px 1fr; } .brand .title { display:none; } .nav-link { font-size: 0; } .nav-link::after { content: attr(title); font-size: 0; } }
@media (max-width: 720px) { .app-layout { grid-template-columns: 1fr; } .app-sidebar { position: relative; height:auto; } .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

h1,h2,h3 { margin: 0 0 8px; }
h1 { font-size: 24px; }
h2 { font-size: 20px; }
h3 { font-size: 16px; color: var(--muted); }

.btn { background: var(--accent); color: #fff; border:none; padding:10px 14px; border-radius:8px; cursor:pointer; }
.btn:hover { opacity:0.95; }
.btn-danger { background: var(--danger); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-secondary { background: var(--accent-2); color: #fff; }

.input, .select, .textarea {
  width: 100%; padding: 10px 12px; border:1px solid var(--border); border-radius:8px; background: var(--bg-soft); color: var(--text);
}
.label { font-size: 12px; color: var(--muted); margin-bottom:6px; display:block; }

.form-row { display:grid; grid-template-columns: 1fr 1fr; gap:12px; }
.form-row-3 { display:grid; grid-template-columns: 1fr 1fr 1fr; gap:12px; }
.form-actions { display:flex; gap: 10px; justify-content: flex-end; margin-top: 12px; }

.table { width:100%; border-collapse: collapse; }
.table th, .table td { padding:10px; border-bottom:1px solid var(--border); text-align:left; }
.table th { color: var(--muted); font-weight:600; }

/* Kanban Board */
.kanban { display:grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.column { background: var(--card); border:1px solid var(--border); border-radius:12px; display:flex; flex-direction:column; min-height: 280px; }
.column h3 { padding: 12px 12px; border-bottom:1px solid var(--border); }
.column .tasks { padding: 12px; display:flex; flex-direction:column; gap: 10px; min-height: 140px; }
.task { background: var(--bg-soft); border:1px solid var(--border); border-radius:10px; padding:10px; cursor:grab; }
.task.dragging { opacity: 0.5; }
.badge { display:inline-block; padding:2px 6px; font-size:12px; border-radius:999px; border:1px solid var(--border); color: var(--muted); }
.badge.high { background: rgba(239,68,68,0.12); color: #ef4444; border-color: rgba(239,68,68,0.4); }
.badge.medium { background: rgba(234,179,8,0.12); color: #eab308; border-color: rgba(234,179,8,0.4); }
.badge.low { background: rgba(34,197,94,0.12); color: #22c55e; border-color: rgba(34,197,94,0.4); }
.badge.urgent { background: rgba(168,85,247,0.12); color: #a855f7; border-color: rgba(168,85,247,0.4); }

.task .meta { display:flex; gap:8px; align-items:center; font-size:12px; color: var(--muted); margin-top:6px; }

/* Modal */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display:none; align-items:center; justify-content:center; z-index: 1000; }
.modal { background: var(--card); border:1px solid var(--border); border-radius:12px; width: 100%; max-width: 600px; box-shadow: 0 10px 30px var(--shadow); }
.modal-header { padding: 12px 16px; border-bottom:1px solid var(--border); font-weight:600; display:flex; justify-content:space-between; }
.modal-body { padding: 16px; }
.modal-actions { padding: 12px 16px; border-top:1px solid var(--border); display:flex; justify-content:flex-end; gap:10px; }

/* Calendar */
.calendar { background: var(--card); border:1px solid var(--border); border-radius:12px; padding: 12px; }
.calendar .controls { display:flex; gap:12px; align-items:center; justify-content:space-between; margin-bottom: 12px; }
.calendar-grid { display:grid; grid-template-columns: repeat(7, 1fr); border-top:1px solid var(--border); border-left:1px solid var(--border); }
.calendar-grid .cell { min-height: 100px; border-right:1px solid var(--border); border-bottom:1px solid var(--border); padding: 6px; position:relative; }
.calendar-grid .date { font-size: 12px; color: var(--muted); }
.event-dot { width: 8px; height: 8px; border-radius: 50%; display:inline-block; margin-right: 4px; }

/* Auth pages */
.auth-card { max-width: 460px; margin: 40px auto; }
.center { display:flex; justify-content:center; }

/* Alerts */
.alert { padding: 10px 12px; border-radius: 8px; border:1px solid var(--border); background: var(--bg-soft); }
.alert.error { border-color: rgba(239,68,68,0.4); background: rgba(239,68,68,0.12); color: #ef4444; }
.alert.success { border-color: rgba(34,197,94,0.4); background: rgba(34,197,94,0.12); color: #22c55e; }

/* File chip */
.file-chip { display:inline-flex; align-items:center; gap:6px; border:1px solid var(--border); padding:4px 8px; border-radius:999px; font-size:12px; }

/* Simple charts */
.chart { width: 100%; height: 280px; }