:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #172033;
  --muted: #687386;
  --border: #dfe4ea;
  --primary: #2563eb;
  --primary-text: #ffffff;
  --danger: #dc2626;
  --warning: #d97706;
  --success: #16803d;
  --shadow: 0 7px 24px rgba(15, 23, 42, .08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --panel: #172033;
    --text: #f8fafc;
    --muted: #aab4c3;
    --border: #334155;
    --primary: #60a5fa;
    --primary-text: #07111f;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.app-shell { max-width: 760px; margin: 0 auto; padding: 18px 14px 48px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
h1, h2 { margin: 0; }
h1 { font-size: clamp(1.55rem, 5vw, 2rem); }
h2 { font-size: 1.1rem; }
.eyebrow { color: var(--muted); font-size: .82rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 18px; padding: 16px; box-shadow: var(--shadow); }
.auth-panel { margin-top: 32px; }
.muted { color: var(--muted); }
.error { color: var(--danger); min-height: 1.25rem; }
label, legend { display: block; font-weight: 700; font-size: .9rem; margin-bottom: 7px; }
input, select, textarea {
  width: 100%; min-height: 46px; border: 1px solid var(--border); border-radius: 12px; background: var(--panel); color: var(--text); padding: 11px 12px; margin-bottom: 14px;
}
textarea { resize: vertical; }
fieldset { border: 0; padding: 0; margin: 0 0 6px; }
.primary { border: 0; border-radius: 12px; background: var(--primary); color: var(--primary-text); font-weight: 800; min-height: 48px; padding: 11px 16px; }
.full { width: 100%; }
.profile-chip { border: 1px solid var(--border); background: var(--panel); color: var(--text); border-radius: 999px; padding: 9px 13px; font-weight: 800; }
.profile-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; margin-top: 14px; }
.profile-card { border: 1px solid var(--border); background: var(--panel); color: var(--text); border-radius: 14px; min-height: 72px; padding: 12px; text-align: left; font-weight: 800; }
.profile-card span { display: block; font-size: 1.35rem; margin-bottom: 4px; }
.quick-panel { margin-bottom: 14px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 12px; }
.section-heading p { margin: 4px 0 0; }
.mic-button { width: 58px; height: 58px; border: 0; border-radius: 50%; background: var(--primary); color: var(--primary-text); font-size: 1.55rem; }
.mic-button.listening { animation: pulse 1.1s infinite; background: var(--danger); }
@keyframes pulse { 50% { transform: scale(1.08); } }
.form-grid { display: grid; gap: 10px; }
.form-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.assignee-checks { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.assignee-check { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); border-radius: 999px; padding: 8px 10px; font-size: .9rem; font-weight: 700; }
.assignee-check input { width: 18px; min-height: 18px; margin: 0; }
.switch-row { display: flex; align-items: center; gap: 10px; font-weight: 600; margin: 0 0 14px; }
.switch-row input { width: 20px; min-height: 20px; margin: 0; }
.status-line { min-height: 1.25rem; margin: 10px 0 0; font-size: .88rem; }
.filters { margin-bottom: 18px; }
.segmented { display: grid; grid-template-columns: repeat(3,1fr); gap: 6px; background: var(--bg); border-radius: 12px; padding: 4px; margin-bottom: 10px; }
.segmented button { border: 0; background: transparent; color: var(--text); border-radius: 9px; padding: 10px 8px; font-weight: 700; }
.segmented button.active { background: var(--panel); box-shadow: 0 2px 8px rgba(15,23,42,.08); }
.filter-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.filter-row select { margin: 0; }
.list-heading { display: flex; align-items: center; gap: 9px; margin: 0 2px 10px; }
.count-badge { background: var(--panel); border: 1px solid var(--border); border-radius: 999px; padding: 3px 9px; font-size: .85rem; color: var(--muted); }
.task-list { display: grid; gap: 10px; }
.task-card { background: var(--panel); border: 1px solid var(--border); border-left: 5px solid var(--border); border-radius: 15px; padding: 13px; box-shadow: var(--shadow); }
.task-card.priority-high { border-left-color: var(--danger); }
.task-card.priority-medium { border-left-color: var(--warning); }
.task-card.priority-low { border-left-color: var(--success); }
.task-card.done { opacity: .62; }
.task-top { display: flex; align-items: flex-start; gap: 10px; }
.task-check { width: 24px; height: 24px; flex: 0 0 auto; margin-top: 1px; }
.task-body { min-width: 0; flex: 1; }
.task-title { font-weight: 800; overflow-wrap: anywhere; }
.task-card.done .task-title { text-decoration: line-through; }
.task-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tag { border: 1px solid var(--border); border-radius: 999px; padding: 4px 7px; font-size: .76rem; color: var(--muted); }
.task-notes { margin-top: 8px; color: var(--muted); font-size: .9rem; white-space: pre-wrap; }
.task-actions { display: flex; justify-content: flex-end; margin-top: 8px; }
.icon-button { border: 0; background: transparent; color: var(--danger); padding: 8px; border-radius: 9px; font-weight: 700; }
.empty { text-align: center; display: grid; justify-items: center; gap: 5px; padding: 28px 16px; }
.empty-icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; background: var(--bg); font-size: 1.3rem; }
.toast { position: sticky; bottom: 14px; margin: 16px auto 0; width: fit-content; max-width: calc(100% - 20px); background: #111827; color: #fff; border-radius: 999px; padding: 10px 14px; font-weight: 700; box-shadow: 0 8px 30px rgba(0,0,0,.2); }
@media (max-width: 520px) {
  .form-grid.two, .filter-row { grid-template-columns: 1fr; }
  .profile-grid { grid-template-columns: 1fr 1fr; }
}