/* Shared ChalkboardAI platform UI, aligned with the landing page */
:root {
  --cb-chalkboard: #173f35;
  --cb-chalkboard-deep: #0d2f28;
  --cb-green: #2f6f5d;
  --cb-mint: #dcefe6;
  --cb-mint-soft: #eff8f2;
  --cb-cream: #f8f3e8;
  --cb-paper: #fffdf7;
  --cb-ink: #1d2d2a;
  --cb-muted: #52655f;
  --cb-line: #d7e2d8;
  --cb-ok: #1b9b6b;
  --cb-warn: #f1d69a;
  --cb-warn-ink: #6b4e16;
  --cb-danger: #a33a3a;
  --cb-radius: 8px;
  --cb-radius-lg: 8px;
  --cb-shadow-soft: 0 12px 26px rgba(18, 51, 43, 0.09);
  --cb-shadow: 0 18px 45px rgba(18, 51, 43, 0.12);
  --cb-max: 1120px;
  --cb-gap: 20px;

  --cb-bg: var(--cb-cream);
  --cb-surface: var(--cb-paper);
  --cb-surface-soft: var(--cb-mint-soft);
  --cb-brand-900: var(--cb-chalkboard);
  --cb-brand-800: var(--cb-chalkboard-deep);
  --cb-brand-700: var(--cb-green);
  --cb-brand-600: var(--cb-chalkboard);
  --cb-brand-500: var(--cb-chalkboard-deep);
  --cb-border: var(--cb-line);
  --cb-border-strong: #b9d0c3;
}

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

html,
body {
  min-height: 100%;
}

body.cb-app {
  margin: 0;
  color: var(--cb-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background:
    radial-gradient(circle at top left, rgba(220, 239, 230, 0.9), transparent 34rem),
    linear-gradient(180deg, var(--cb-cream) 0%, #fbf8ef 50%, var(--cb-paper) 100%);
}

.cb-app a {
  color: inherit;
}

.cb-app a:focus-visible,
.cb-app button:focus-visible,
.cb-app input:focus-visible,
.cb-app textarea:focus-visible,
.cb-app select:focus-visible {
  outline: 3px solid #9fd5bb;
  outline-offset: 3px;
}

.cb-shell {
  width: min(var(--cb-max), calc(100% - 40px));
  margin: 0 auto;
  padding: 44px 0 42px;
}

.cb-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  color: var(--cb-chalkboard-deep);
  border-bottom: 1px solid rgba(215, 226, 216, 0.9);
  background: rgba(248, 243, 232, 0.94);
  backdrop-filter: blur(14px);
}

.cb-topbar__inner {
  width: min(var(--cb-max), calc(100% - 40px));
  min-height: 74px;
  margin: 0 auto;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cb-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--cb-chalkboard-deep);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
  padding: 0;
}

.cb-brand:hover,
.cb-brand:focus-visible {
  background: transparent;
  box-shadow: none;
  transform: none;
}

.cb-brand__mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 7px;
  color: #f5fbf6;
  font-weight: 900;
  background: linear-gradient(145deg, var(--cb-chalkboard), var(--cb-green));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.cb-brand__mark::before {
  content: "C";
}

.cb-brand__text {
  display: grid;
  line-height: 1.08;
}

.cb-brand__name {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0;
}

.cb-brand__tagline {
  color: var(--cb-muted);
  font-size: 0.82rem;
  font-weight: 650;
}

.cb-topnav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  color: var(--cb-muted);
  font-size: 0.95rem;
  font-weight: 650;
  flex-wrap: wrap;
}

.cb-topnav a,
.cb-topnav button {
  color: var(--cb-muted);
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  font: inherit;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
}

.cb-topnav a:hover,
.cb-topnav button:hover {
  color: var(--cb-green);
  text-decoration: underline;
  text-underline-offset: 4px;
  background: transparent;
  box-shadow: none;
  transform: none;
}

.cb-section {
  margin: 0 0 58px;
}

.cb-page-title {
  max-width: 780px;
  margin: 0 0 14px;
  color: var(--cb-chalkboard-deep);
  font-size: clamp(2.25rem, 4.6vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.cb-page-kicker,
.cb-muted {
  color: var(--cb-muted);
}

.cb-page-kicker {
  max-width: 780px;
  margin: 0 0 26px;
  font-size: 1.05rem;
}

.cb-card,
.cb-panel {
  border: 1px solid rgba(215, 226, 216, 0.95);
  border-radius: var(--cb-radius);
}

.cb-card {
  background: rgba(255, 253, 247, 0.9);
  box-shadow: var(--cb-shadow);
}

.cb-card__body {
  padding: 24px;
}

.cb-panel {
  background: var(--cb-mint-soft);
  padding: 18px;
}

.cb-stack {
  display: grid;
  gap: 16px;
}

.cb-cluster {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.cb-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.btn,
.cb-btn,
.cb-app button {
  min-height: 48px;
  border: 1px solid var(--cb-border-strong);
  border-radius: var(--cb-radius);
  background: rgba(255, 253, 247, 0.76);
  color: var(--cb-chalkboard-deep);
  padding: 12px 18px;
  font: inherit;
  font-weight: 800;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}

.btn:hover,
.cb-btn:hover,
.cb-app button:hover {
  background: #fff;
  border-color: #b9d0c3;
  box-shadow: 0 10px 20px rgba(23, 63, 53, 0.1);
  transform: translateY(-1px);
}

.btn:disabled,
.cb-btn:disabled,
.cb-app button:disabled {
  opacity: 0.58;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn--primary,
.cb-btn.primary,
.cb-app button.primary {
  background: var(--cb-chalkboard);
  border-color: var(--cb-chalkboard);
  color: #fffdf7;
  box-shadow: 0 12px 22px rgba(23, 63, 53, 0.18);
}

.btn--primary:hover,
.cb-btn.primary:hover,
.cb-app button.primary:hover {
  background: var(--cb-chalkboard-deep);
  border-color: var(--cb-chalkboard-deep);
}

.btn--secondary,
.cb-btn.secondary {
  background: rgba(255, 253, 247, 0.76);
  color: var(--cb-chalkboard-deep);
}

.btn--ghost {
  background: transparent;
}

.btn--warn {
  background: var(--cb-warn);
  border-color: rgba(107, 78, 22, 0.25);
  color: var(--cb-warn-ink);
}

.btn--small,
.cb-app button.small {
  min-height: 34px;
  padding: 6px 9px;
  font-size: 0.86rem;
}

input[type="text"],
input[type="number"],
input[type="file"],
textarea,
select {
  width: 100%;
  max-width: 100%;
  border: 1px solid var(--cb-border-strong);
  border-radius: var(--cb-radius);
  background: #fff;
  color: var(--cb-ink);
  padding: 10px 11px;
  font: inherit;
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
}

textarea {
  min-height: 92px;
  resize: vertical;
}

label {
  color: var(--cb-chalkboard-deep);
  font-weight: 760;
}

.cb-field {
  display: grid;
  gap: 6px;
}

.cb-field label,
.field-group label {
  display: block;
  width: auto;
  font-size: 0.92rem;
}

.cb-grid-2,
.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.cb-workflow {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 0 0 24px;
}

.cb-workflow .step,
.pilot-progress .step {
  border: 1px solid var(--cb-line);
  border-radius: 999px;
  background: #fff;
  color: var(--cb-muted);
  padding: 8px 12px;
  font-weight: 760;
}

.cb-workflow .step.active,
.pilot-progress .step.active {
  background: rgba(220, 239, 230, 0.82);
  border-color: #b9d0c3;
  color: var(--cb-chalkboard-deep);
}

.cb-workflow .step.complete,
.pilot-progress .step.complete {
  background: var(--cb-chalkboard);
  border-color: var(--cb-chalkboard);
  color: #fffdf7;
}

.pill,
.cb-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border-radius: 999px;
  border: 1px solid var(--cb-line);
  background: #fff;
  color: var(--cb-chalkboard-deep);
  font-size: 14px;
  line-height: 1;
  white-space: nowrap;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(29, 45, 42, 0.48);
}

.dot--ok {
  background: var(--cb-ok);
}

.dot--warn {
  background: var(--cb-warn-ink);
}

.dot--lock {
  background: rgba(29, 45, 42, 0.48);
}

.cb-status,
.status,
.cb-banner {
  border: 1px solid var(--cb-line);
  border-radius: var(--cb-radius);
  background: var(--cb-mint-soft);
  padding: 12px;
  color: var(--cb-muted);
}

.cb-table-wrap,
.table-wrap,
.table-viewport {
  width: 100%;
  overflow: auto;
  border: 1px solid var(--cb-line);
  border-radius: var(--cb-radius);
  background: #fff;
}

.cb-table,
.chalkboard-table {
  width: 100%;
  border-collapse: collapse;
}

.cb-table th,
.cb-table td,
.chalkboard-table th,
.chalkboard-table td {
  padding: 10px;
  border-bottom: 1px solid var(--cb-line);
  text-align: left;
  vertical-align: top;
}

.cb-table th,
.chalkboard-table th {
  background: var(--cb-mint-soft);
  color: var(--cb-chalkboard-deep);
  font-weight: 850;
}

.cb-error {
  margin-top: 10px;
  background: #fff1f1;
  border: 1px solid #ffcccc;
  padding: 10px;
  border-radius: var(--cb-radius);
  color: #7a1b1b;
  font-size: 13px;
}

.hidden,
[hidden] {
  display: none !important;
}

/* Pilot access layer: intentionally self-contained for easy removal after the pilot. */
.pilot-access-pending body > *:not(.pilot-access-gate),
.pilot-access-blocked body > *:not(.pilot-access-gate) {
  visibility: hidden;
}

.pilot-access-gate {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(13, 47, 40, 0.68);
  visibility: visible;
}

.pilot-access-panel {
  width: min(460px, 100%);
  padding: 24px;
  border: 1px solid var(--cb-line);
  border-radius: var(--cb-radius);
  background: var(--cb-paper);
  color: var(--cb-ink);
  box-shadow: var(--cb-shadow);
}

.pilot-access-panel h1 {
  margin: 0 0 10px;
  color: var(--cb-chalkboard-deep);
  font-size: 1.55rem;
}

.pilot-access-form {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.pilot-access-form button,
.pilot-access-link {
  display: inline-block;
  text-align: center;
  text-decoration: none;
}

.pilot-access-form button:disabled {
  opacity: 0.65;
  cursor: wait;
}

.pilot-access-privacy {
  margin: 14px 0 0;
  color: var(--cb-muted);
  font-size: 0.92rem;
}

.pilot-access-error {
  min-height: 1.25rem;
  margin-top: 12px;
  color: #b91c1c;
  font-weight: 700;
}

.pilot-tool-unavailable {
  opacity: 0.5;
  filter: grayscale(0.35);
}

.pilot-version-banner {
  width: 100%;
  padding: 8px 16px;
  background: var(--cb-mint-soft);
  color: var(--cb-chalkboard-deep);
  border-bottom: 1px solid rgba(185, 208, 195, 0.72);
  font-size: 0.92rem;
  text-align: center;
}

.pilot-feedback-controls {
  margin-top: 18px;
  padding: 16px;
  border: 1px solid var(--cb-line);
  border-radius: var(--cb-radius);
  background: var(--cb-mint-soft);
}

.pilot-feedback-controls h3 {
  margin: 0 0 10px;
  color: var(--cb-chalkboard-deep);
  font-size: 1rem;
}

.pilot-feedback-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.pilot-feedback-controls button.is-selected,
.pilot-feedback-controls .pilot-feedback-send {
  background: var(--cb-chalkboard);
  color: #fffdf7;
  border-color: var(--cb-chalkboard);
}

.pilot-feedback-controls label {
  display: grid;
  gap: 6px;
}

.pilot-feedback-send {
  margin-top: 10px;
}

.pilot-feedback-message {
  min-height: 1.25rem;
  margin: 10px 0 0;
  color: var(--cb-muted);
}

.pilot-feedback-message[data-kind="error"] {
  color: #b91c1c;
  font-weight: 700;
}

.pilot-feedback-message[data-kind="ok"] {
  color: var(--cb-green);
  font-weight: 700;
}

.cb-footer {
  text-align: center;
  color: var(--cb-muted);
  padding: 20px 18px 34px;
}

@media (max-width: 900px) {
  .cb-topbar__inner {
    flex-wrap: wrap;
    justify-content: center;
    padding: 16px 0;
  }

  .cb-topnav {
    order: 3;
    width: 100%;
    gap: 14px 22px;
  }
}

@media (max-width: 760px) {
  .cb-page-title {
    font-size: 32px;
  }

  .cb-grid-2,
  .two-column {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .cb-shell,
  .cb-topbar__inner {
    width: min(100% - 28px, var(--cb-max));
  }

  .cb-brand__tagline {
    display: none;
  }
}