/* Aixo Document Review — interactive local demo. Self-contained, no external resources. */

:root {
  --bg: #FAFAF9;
  --surface: #FFFFFF;
  --text: #14181F;
  --text-secondary: #4B5563;
  --accent: #1D4E89;
  --border: #E2E5EA;
  --error: #B3261E;
  --control-radius: 8px;
  --panel-radius: 12px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
}

h1, h2 {
  margin: 0 0 var(--space-1);
  font-weight: 700;
  line-height: 1.25;
}

h1 {
  font-size: 22px;
}

h2 {
  font-size: 18px;
}

p {
  margin: 0 0 var(--space-2);
}

a {
  color: var(--accent);
}

button {
  font-family: inherit;
}

/* Accessibility utilities */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -60px;
  background: var(--text);
  color: #FFFFFF;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--control-radius);
  z-index: 100;
  transition: top 0.15s ease;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-2);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
h1:focus-visible,
h2:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

/* Header */
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: var(--space-2) var(--space-3);
}

.app-header-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
  max-width: 1200px;
  margin-inline: auto;
}

.back-link {
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.back-link:hover {
  text-decoration: underline;
}

.demo-badge {
  max-width: 1200px;
  margin: var(--space-1) auto 0;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* Stepper */
.stepper {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  max-width: 1200px;
  margin: var(--space-3) auto 0;
  padding: 0 var(--space-3);
}

.stepper-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
}

.stepper-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
  flex-shrink: 0;
}

.stepper-item.is-current .stepper-index {
  border-color: var(--accent);
  color: var(--accent);
}

.stepper-item.is-current .stepper-label {
  color: var(--text);
}

.stepper-item.is-done .stepper-index {
  border-color: var(--accent);
  background: var(--accent);
  color: #FFFFFF;
}

.stepper-item.is-done .stepper-label {
  color: var(--text);
}

/* Workspace */
.workspace {
  max-width: 1200px;
  margin: var(--space-3) auto var(--space-4);
  padding: 0 var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--panel-radius);
  padding: var(--space-3);
  box-shadow: 0 1px 3px rgba(20, 24, 31, 0.06);
}

button.doc-toggle {
  display: none;
}

@media (min-width: 900px) {
  .workspace {
    flex-direction: row;
    align-items: flex-start;
  }

  .doc-panel,
  .action-panel {
    flex: 1 1 0;
    min-width: 0;
  }

  .workspace.mobile-fields-first .doc-panel {
    order: 1;
  }

  .workspace.mobile-fields-first .action-panel {
    order: 2;
  }
}

@media (max-width: 899px) {
  .workspace.mobile-fields-first .doc-panel {
    order: 2;
  }

  .workspace.mobile-fields-first .action-panel {
    order: 1;
  }

  button.doc-toggle {
    display: inline-flex;
  }

  .doc-content.is-collapsed {
    display: none;
  }
}

/* Document panel */
.doc-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.doc-panel-title {
  margin: 0;
}

.invoice {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--control-radius);
  padding: var(--space-3);
}

.invoice-stamp {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-2);
}

.invoice-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  font-size: 14px;
}

.invoice-label {
  color: var(--text-secondary);
}

.invoice-value {
  font-weight: 600;
  text-align: right;
}

.invoice-total .invoice-value {
  color: var(--accent);
}

.invoice-divider {
  border-top: 1px solid var(--border);
  margin: var(--space-1) 0;
}

/* Stage panels */
.stage-panel .hint {
  color: var(--text-secondary);
  font-size: 14px;
}

.notice {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--control-radius);
  padding: var(--space-2);
  font-size: 14px;
  color: var(--text-secondary);
}

.loading-line {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-secondary);
}

.spinner {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation: none;
  }
  * {
    transition: none !important;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Form fields */
.field {
  margin-bottom: var(--space-3);
}

.field label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: var(--space-1);
}

.field input[type="text"],
.field input[type="date"] {
  width: 100%;
  max-width: 360px;
  min-height: 44px;
  font-family: inherit;
  font-size: 16px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--control-radius);
  background: var(--surface);
  color: var(--text);
}

.field input:focus {
  border-color: var(--accent);
}

.field input:disabled {
  background: var(--bg);
  color: var(--text-secondary);
}

.field.has-error input[type="text"],
.field.has-error input[type="date"] {
  border-color: var(--error);
}

.field-error {
  display: none;
  color: var(--error);
  font-size: 14px;
  margin-top: var(--space-1);
}

.field.has-error .field-error {
  display: block;
}

.checkbox-inline {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  min-height: 44px;
  font-weight: 400;
  font-size: 14px;
  margin-top: var(--space-1);
  cursor: pointer;
}

.checkbox-inline input[type="checkbox"] {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.checkbox-field .checkbox-inline {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--control-radius);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #163C69;
  border-color: #163C69;
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-secondary:hover {
  background: var(--accent);
  color: #FFFFFF;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--text-secondary);
  color: var(--text);
}

.actions-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* Accepted summary */
.summary-list {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--control-radius);
  padding: var(--space-2) var(--space-3);
  margin: 0 0 var(--space-3);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.summary-row:last-child {
  border-bottom: none;
}

.summary-row dt {
  color: var(--text-secondary);
}

.summary-row dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
}

.stage-message {
  font-weight: 600;
  font-size: 17px;
}

/* Request-a-similar-project callout */
.demo-request-cta {
  max-width: 680px;
  margin: var(--space-4) auto 0;
  padding: var(--space-3);
  border: 1px dashed var(--border);
  border-radius: var(--panel-radius);
  text-align: center;
}

.demo-request-cta p {
  margin: 0 0 var(--space-2);
}