/* ===== Self-hosted Fonts ===== */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 600 800;
  font-display: swap;
  src: url('../fonts/plus-jakarta-sans-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ===== AClaw.ai Design System ===== */

:root {
  --brand-500: #FF6B4A;
  --brand-600: #E85C3D;
  --brand-200: #FFD8CC;
  --bg-0: #FFFDFB;
  --bg-50: #FFF6F1;
  --bg-100: #FFEDE5;
  --text-900: #2B1B14;
  --text-700: #5A3A2E;
  --text-500: #8A6A5D;
  --accent-teal: #1A6B5B;
  --accent-gold: #C98A2E;
  --border-soft: #F2D9CF;
  --shadow-brand: 0 4px 24px #FF835F33;
}

/* ===== Base ===== */

/* Override Tailwind font-zh to use system CJK fonts instead of Google-hosted Noto Sans SC */
.font-zh {
  font-family: Inter, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-0);
  color: var(--text-900);
}

::selection {
  background-color: var(--brand-200);
  color: var(--text-900);
}

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1.5rem;
  background: var(--brand-500);
  color: #fff;
  font-weight: 600;
  border-radius: 0 0 0.5rem 0;
}
.skip-link:focus {
  left: 0;
}

/* ===== Navbar ===== */
.navbar {
  transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.navbar.scrolled {
  background-color: var(--bg-0);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: 0 1px 8px rgba(255, 131, 95, 0.08);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: 0.75rem;
  transition: all 0.2s;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.4;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--bg-0), 0 0 0 5px var(--brand-500);
}
.btn-primary {
  background-color: var(--brand-500);
  color: #fff;
  box-shadow: var(--shadow-brand);
}
.btn-primary:hover {
  background-color: var(--brand-600);
  transform: translateY(-1px);
  box-shadow: 0 6px 28px #FF835F44;
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  background: transparent;
  color: var(--brand-500);
  border: 2px solid var(--brand-500);
}
.btn-outline:hover {
  background-color: var(--bg-100);
  color: var(--brand-600);
  border-color: var(--brand-600);
}
.btn-white {
  background: #fff;
  color: var(--brand-600);
  box-shadow: var(--shadow-brand);
}
.btn-white:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 28px #FF835F44;
}

/* ===== Cards ===== */
.card {
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 1rem;
  padding: 1.75rem;
  transition: box-shadow 0.25s, transform 0.25s;
}
.card:hover {
  box-shadow: var(--shadow-brand);
  transform: translateY(-2px);
}

/* ===== Pricing Card ===== */
.pricing-card {
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 1.25rem;
  padding: 2rem;
  transition: box-shadow 0.25s, transform 0.25s;
  position: relative;
}
.pricing-card--highlighted {
  border: 2px solid var(--brand-500);
  box-shadow: var(--shadow-brand);
}

/* ===== FAQ Accordion ===== */
.faq-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-900);
  border-bottom: 1px solid var(--border-soft);
  transition: color 0.2s;
}
.faq-btn:hover {
  color: var(--brand-500);
}
.faq-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--bg-0), 0 0 0 5px var(--brand-500);
  border-radius: 0.25rem;
}
.faq-btn svg {
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq-btn[aria-expanded="true"] svg {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-answer.open {
  max-height: 500px;
}
.faq-answer-inner {
  padding: 0 0 1.25rem;
  color: var(--text-700);
  line-height: 1.7;
}

/* ===== Mobile Nav Overlay ===== */
.mobile-nav {
  display: none;
  position: fixed;
  top: 4rem;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgb(255, 253, 251);
  z-index: 40;
  padding: 2rem 1.5rem;
}
.mobile-nav.open {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.mobile-nav a {
  display: block;
  padding: 0.75rem 0;
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-700);
  text-decoration: none;
  border-bottom: 1px solid var(--border-soft);
  transition: color 0.2s;
}
.mobile-nav a:hover {
  color: var(--brand-500);
}

/* ===== Comparison Table ===== */
.comparison-table th,
.comparison-table td {
  padding: 0.875rem 1rem;
}
.comparison-table th:first-child,
.comparison-table td:first-child {
  text-align: left;
}
.comparison-table th:not(:first-child),
.comparison-table td:not(:first-child) {
  text-align: center;
}
.comparison-table thead th {
  font-weight: 600;
  color: var(--text-900);
  border-bottom: 2px solid var(--border-soft);
}
.comparison-table tbody tr {
  border-bottom: 1px solid var(--border-soft);
}
.comparison-table tbody tr:hover {
  background-color: var(--bg-50);
}
.comparison-table .col-highlight {
  background-color: rgba(255, 107, 74, 0.04);
}
.comparison-table .col-highlight-head {
  background-color: var(--brand-500);
  color: #fff;
  border-radius: 0.75rem 0.75rem 0 0;
}

/* ===== Prose (legal pages) ===== */
.prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-900);
  margin: 2rem 0 1rem;
}
.prose h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-900);
  margin: 1.5rem 0 0.75rem;
}
.prose p {
  color: var(--text-700);
  line-height: 1.8;
  margin-bottom: 1rem;
}
.prose ul, .prose ol {
  color: var(--text-700);
  line-height: 1.8;
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}
.prose a {
  color: var(--brand-500);
  text-decoration: underline;
}
.prose a:hover {
  color: var(--brand-600);
}

/* ===== Setup Modal ===== */
.setup-modal-backdrop {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 60;
  background: rgba(43, 27, 20, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.2s ease;
}
.setup-modal {
  position: relative;
  background: #fff;
  border-radius: 1.25rem;
  box-shadow: 0 20px 60px rgba(43, 27, 20, 0.18);
  width: 100%;
  max-width: 28rem;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  animation: scaleIn 0.25s ease;
}
.setup-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-500);
  padding: 0.25rem;
  border-radius: 0.5rem;
  transition: color 0.2s, background 0.2s;
}
.setup-close:hover {
  color: var(--text-900);
  background: var(--bg-100);
}

/* Stepper */
.setup-stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 1.75rem;
}
.setup-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}
.setup-step span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  font-size: 0.8125rem;
  font-weight: 700;
  background: var(--bg-100);
  color: var(--text-500);
  transition: background 0.25s, color 0.25s;
}
.setup-step.active span {
  background: var(--brand-500);
  color: #fff;
}
.setup-step.done span {
  background: var(--accent-teal);
  color: #fff;
}
.setup-step small {
  font-size: 0.6875rem;
  color: var(--text-500);
  white-space: nowrap;
}
.setup-step.active small {
  color: var(--brand-500);
  font-weight: 600;
}
.setup-step-line {
  width: 2.5rem;
  height: 2px;
  background: var(--border-soft);
  margin: 0 0.5rem;
  margin-bottom: 1rem;
  transition: background 0.25s;
}
.setup-step-line.done {
  background: var(--accent-teal);
}

/* Panel */
.setup-heading {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-900);
  margin-bottom: 0.25rem;
}
.setup-desc {
  font-size: 0.875rem;
  color: var(--text-500);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

/* Form elements */
.setup-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-700);
  margin-bottom: 0.375rem;
}
.setup-select,
.setup-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  color: var(--text-900);
  background: var(--bg-0);
  border: 1.5px solid var(--border-soft);
  border-radius: 0.75rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
  appearance: none;
}
.setup-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%238A6A5D' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
}
.setup-select:focus,
.setup-input:focus {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.12);
}
.setup-input::placeholder {
  color: var(--text-500);
  opacity: 0.6;
}
.setup-hint {
  font-size: 0.75rem;
  color: var(--text-500);
  margin-top: 0.5rem;
  margin-bottom: 1.25rem;
}
.setup-error {
  font-size: 0.75rem;
  color: #D94444;
  margin-top: 0.375rem;
}

/* Details / instructions */
.setup-details {
  margin-top: 0.75rem;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-soft);
  border-radius: 0.75rem;
  overflow: hidden;
}
.setup-details summary {
  padding: 0.625rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--brand-500);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}
.setup-details summary::-webkit-details-marker {
  display: none;
}
.setup-details summary::before {
  content: '?';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background: var(--bg-100);
  color: var(--brand-500);
  font-size: 0.6875rem;
  font-weight: 700;
  flex-shrink: 0;
}
.setup-details ol {
  padding: 0 1rem 0.75rem 2.75rem;
  font-size: 0.8125rem;
  color: var(--text-700);
  line-height: 1.7;
}
.setup-details ol li {
  margin-bottom: 0.25rem;
}
.setup-details code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  background: var(--bg-100);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  color: var(--brand-600);
}

/* Summary card */
.setup-summary {
  background: var(--bg-50);
  border: 1px solid var(--border-soft);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}
.setup-summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
}
.setup-summary-row + .setup-summary-row {
  border-top: 1px solid var(--border-soft);
}
.setup-summary-label {
  font-size: 0.8125rem;
  color: var(--text-500);
}
.setup-summary-value {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-900);
}

/* Actions */
.setup-actions {
  margin-top: 1.25rem;
}
.setup-actions--duo {
  display: flex;
  gap: 0.75rem;
}
.setup-actions--duo .btn-outline {
  flex: 0 0 auto;
}
.setup-actions--duo .btn-primary {
  flex: 1;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}