:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #1b2230;
  --muted: #687386;
  --line: #dfe4ec;
  --accent: #0f766e;
  --accent-dark: #0b5d57;
  --blue: #2563eb;
  --amber: #b45309;
  --red: #b91c1c;
  --green-soft: #e7f6f1;
  --shadow: 0 12px 32px rgba(27, 34, 48, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 8px;
  padding: 9px 12px;
  cursor: pointer;
}

button:hover {
  border-color: #aab4c3;
}

.hidden {
  display: none !important;
}

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-panel,
.task-form {
  width: min(460px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.login-panel h1,
.topbar h1,
.task-form h2,
.slack-panel h2 {
  margin: 0;
  letter-spacing: 0;
}

.login-panel label,
.task-form label,
.import-box label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
}

.login-panel input,
.task-form input,
.task-form select,
.task-form textarea,
.import-box input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 11px;
  background: #fff;
  color: var(--ink);
}

.login-panel button,
.task-form button[type="submit"],
.top-actions button:last-child {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.login-panel button:hover,
.task-form button[type="submit"]:hover,
.top-actions button:last-child:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.form-error {
  min-height: 20px;
  color: var(--red);
}

.app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  background: #121821;
  color: #f8fafc;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  font-weight: 800;
}

.brand span:last-child,
.sheet-link,
.muted,
.eyebrow {
  color: var(--muted);
}

.brand div span {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: #aab4c3;
}

.nav {
  display: grid;
  gap: 7px;
}

.nav button {
  width: 100%;
  text-align: left;
  color: #dbe3ee;
  background: transparent;
  border-color: transparent;
}

.nav button.active,
.nav button:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
}

.sheet-link {
  margin-top: auto;
  color: #dbe3ee;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 10px 12px;
}

.workspace {
  padding: 28px;
  display: grid;
  gap: 20px;
  align-content: start;
}

.topbar,
.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
}

.eyebrow {
  margin: 0 0 5px;
  text-transform: uppercase;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.top-actions {
  display: flex;
  gap: 8px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.summary-grid div {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
}

.summary-grid span {
  display: block;
  font-size: 26px;
  font-weight: 800;
}

.summary-grid small {
  color: var(--muted);
}

.task-list {
  display: grid;
  gap: 10px;
}

.task-card {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 12px;
  align-items: start;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
}

.task-card.done {
  opacity: 0.68;
}

.task-card.done .task-title {
  text-decoration: line-through;
}

.task-check {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  accent-color: var(--accent);
}

.task-title {
  margin: 0;
  font-size: 15px;
  font-weight: 750;
}

.task-meta,
.task-detail {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.pill {
  border-radius: 999px;
  padding: 4px 8px;
  background: #eef2f7;
  color: #415067;
}

.pill.high {
  color: var(--red);
  background: #fdecec;
}

.pill.medium {
  color: var(--amber);
  background: #fff4df;
}

.pill.low {
  color: var(--blue);
  background: #eaf1ff;
}

.task-actions {
  display: flex;
  gap: 7px;
}

.task-actions select {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: #fff;
}

.empty {
  background: var(--panel);
  border: 1px dashed #b8c2cf;
  border-radius: 8px;
  padding: 28px;
  color: var(--muted);
  text-align: center;
}

.slack-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  display: grid;
  gap: 16px;
}

.switch {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 700;
}

.import-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.candidate-list {
  display: grid;
  gap: 8px;
}

.candidate {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcfe;
}

dialog {
  border: 0;
  border-radius: 10px;
  padding: 0;
}

dialog::backdrop {
  background: rgba(18, 24, 33, 0.42);
}

.task-form {
  width: min(680px, calc(100vw - 28px));
}

.task-form header,
.task-form footer {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.task-form {
  display: grid;
  gap: 14px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@media (max-width: 840px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .nav,
  .summary-grid,
  .import-box,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .task-card {
    grid-template-columns: 30px 1fr;
  }

  .task-actions {
    grid-column: 2;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }
}