/* ============================================
   Client Onboarding Kit - Design System
   Color: Teal #0d9488
   ============================================ */

:root {
  --color-bg: #ffffff;
  --color-surface: #f8f9fa;
  --color-text: #1a1a2e;
  --color-text-muted: #6b7280;
  --color-text-faint: #9ca3af;
  --color-primary: #0d9488;
  --color-primary-light: #2dd4bf;
  --color-primary-dark: #0f766e;
  --color-success: #047857;
  --color-warning: #9a5400;
  --color-error: #dc2626;
  --color-border: #e5e7eb;
  --radius: 12px;
  --max-width: 1100px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2.5rem;
  --spacing-2xl: 4rem;
  --section-gap: clamp(3rem, 6vw, 5rem);
  --radius-sm: 6px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.04), 0 4px 8px rgba(0, 0, 0, 0.06), 0 8px 16px rgba(0, 0, 0, 0.04);
  --font-xs: 0.75rem;
  --font-sm: 0.85rem;
  --font-base: 1rem;
  --font-lg: 1.15rem;
  --z-header: 50;
  --z-skip-link: 200;
  --transition: 0.2s ease-out;
  --color-success-light: #dcfce7;
  --color-warning-light: #fef3c7;
  --color-error-light: #fee2e2;
}

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-text-faint: #64748b;
  --color-primary: #2dd4bf;
  --color-primary-light: #5eead4;
  --color-primary-dark: #14b8a6;
  --color-success: #10b981;
  --color-warning: #fbbf24;
  --color-error: #f87171;
  --color-border: #334155;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; top: -100%; left: 1rem;
  background: var(--color-primary); color: #fff;
  padding: 0.5rem 1rem; border-radius: var(--radius);
  z-index: 1000; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* ---------- Announcement Bar ---------- */
.announcement-bar {
  background: #111827; color: rgba(255,255,255,0.85);
  text-align: center; padding: 0.5rem 1rem;
  font-size: 0.785rem; font-weight: 400;
  letter-spacing: 0.01em; line-height: 1.4;
}
.announcement-bar strong { font-weight: 600; color: #fff; }
.announcement-bar .ann-cta {
  color: #2dd4bf; text-decoration: underline;
  text-underline-offset: 2px; font-weight: 500; margin-left: 0.35rem;
}
.announcement-bar .ann-cta:hover { color: #fff; }
.announcement-bar .ann-sep { margin: 0 0.4rem; opacity: 0.35; }
[data-theme="dark"] .announcement-bar { background: #1e293b; }
[data-theme="dark"] .announcement-bar .ann-cta { color: #2dd4bf; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}
.header-inner {
  max-width: var(--max-width); margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { font-weight: 800; font-size: 1.2rem; color: var(--color-text); }
.logo:hover { text-decoration: none; }
.nav-links {
  list-style: none; display: flex; align-items: center; gap: 1.5rem;
}
.nav-links a { color: var(--color-text-muted); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover, .nav-links a.active { color: var(--color-primary); text-decoration: none; }

/* ---------- Mobile menu ---------- */
.mobile-toggle {
  display: none; background: none; border: none;
  font-size: 1.5rem; color: var(--color-text); cursor: pointer;
}
@media (max-width: 768px) {
  .mobile-toggle { display: block; }
  .nav-links {
    display: none; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-bg); border-bottom: 1px solid var(--color-border);
    padding: 1rem; gap: 0.75rem;
  }
  .nav-links.open { display: flex; }
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
  background: none; border: 1px solid var(--color-border);
  border-radius: 50%; width: 2rem; height: 2rem;
  cursor: pointer; color: var(--color-text); font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
}

/* ---------- Hero ---------- */
.hero {
  padding: 3rem 1.5rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
}
.hero .subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 1.5rem;
}

/* ---------- Tabs ---------- */
.tab-bar {
  display: flex; gap: 0;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1.5rem;
  overflow-x: auto;
}
.tab-btn {
  flex: 1;
  padding: 0.65rem 0.5rem;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--color-bg);
  color: var(--color-text-muted);
  border: none;
  border-right: 1px solid var(--color-border);
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.tab-btn:last-child { border-right: none; }
.tab-btn.active {
  background: var(--color-primary);
  color: #fff;
}
.tab-btn:hover:not(.active) {
  background: var(--color-surface);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---------- Kit builder container ---------- */
.kit-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}
.kit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 768px) {
  .kit-grid { grid-template-columns: 1fr; }
}

.kit-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.kit-panel h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ---------- Preview panel ---------- */
.preview-panel {
  position: sticky;
  top: 80px;
}
.preview-content {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  font-size: 0.88rem;
  line-height: 1.7;
  min-height: 300px;
  white-space: pre-wrap;
  font-family: system-ui, -apple-system, sans-serif;
}
.preview-content .preview-placeholder {
  color: var(--color-text-faint);
  font-style: italic;
}

/* ---------- Form controls ---------- */
.form-group {
  margin-bottom: 1rem;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}
.form-group select,
.form-group input[type="number"],
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="date"],
.form-group textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: inherit;
}
.form-group textarea {
  resize: vertical;
  min-height: 60px;
}
.form-group select:focus,
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

/* ---------- Checkbox group ---------- */
.checkbox-group {
  margin-bottom: 1rem;
}
.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0;
  font-size: 0.9rem;
  cursor: pointer;
}
.checkbox-group input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
}

/* ---------- Line items ---------- */
.line-items { margin-bottom: 1rem; }
.line-item {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr auto;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.5rem;
}
.line-item input {
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.88rem;
  font-family: inherit;
}
.line-item input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}
.btn-remove {
  background: none;
  border: none;
  color: var(--color-error);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.25rem;
}
.btn-add {
  background: none;
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  padding: 0.5rem;
  width: 100%;
  cursor: pointer;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.85rem;
}
.btn-add:hover {
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 5%, var(--color-bg));
}
@media (max-width: 768px) {
  .line-item {
    grid-template-columns: 1fr 1fr;
  }
  .line-item input:first-child {
    grid-column: 1 / -1;
  }
}

/* ---------- Buttons ---------- */
.btn-copy {
  display: inline-flex; align-items: center; gap: 0.35rem;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 0.55rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s;
}
.btn-copy:hover {
  border-color: var(--color-primary);
}
.btn-copy.copied {
  border-color: var(--color-success);
  color: var(--color-success);
}

.btn-pdf, .buy-btn, .hero-cta {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1.05rem;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-pdf:hover, .buy-btn:hover, .hero-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  text-decoration: none;
  color: #fff;
}
.btn-pdf {
  display: block;
  width: 100%;
  text-align: center;
  margin-top: 1rem;
}
.btn-group {
  display: flex; gap: 0.75rem; margin-top: 1rem;
  flex-wrap: wrap;
}

/* ---------- Info sections ---------- */
.info-section {
  max-width: var(--max-width);
  margin: 3rem auto;
  padding: 0 1.5rem;
}
.info-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.info-card .card-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}
.info-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.info-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ---------- Author section ---------- */
.author-section {
  max-width: 600px;
  margin: 3rem auto;
  padding: 0 1.5rem;
  display: flex;
  gap: 1.25rem;
  align-items: center;
}
.author-photo {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.author-info h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
}
.author-info p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ---------- Trust badges ---------- */
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.3rem 0.7rem;
  border-radius: 9999px;
}

/* ---------- FAQ ---------- */
.faq-section { max-width: 700px; margin: 3rem auto; padding: 0 1.5rem; }
.faq-section h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; text-align: center; }
.faq-item { border-bottom: 1px solid var(--color-border); padding: 1rem 0; }
.faq-item summary { cursor: pointer; font-weight: 600; list-style: none; }
.faq-item summary::before { content: "+ "; color: var(--color-primary); }
.faq-item[open] summary::before { content: "- "; }
.faq-answer { margin-top: 0.5rem; color: var(--color-text-muted); }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 4rem; padding: 2rem 1.5rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}
.footer-inner {
  max-width: var(--max-width); margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 2rem;
}
.footer-brand { flex: 2; min-width: 200px; }
.footer-brand h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.footer-brand p { color: var(--color-text-muted); font-size: 0.9rem; }
.footer-links { flex: 1; min-width: 120px; }
.footer-links h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); margin-bottom: 0.5rem; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 0.35rem; }
.footer-links a { color: var(--color-text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--color-primary); }

/* ---------- Cross-sell ---------- */
.footer-products {
  max-width: var(--max-width); margin: 1.5rem auto 0;
  padding-top: 1rem; border-top: 1px solid var(--color-border);
  text-align: center;
}
.footer-products h4 {
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--color-text-muted); margin-bottom: 0.5rem;
}
.footer-products-list {
  list-style: none; display: flex; flex-wrap: wrap;
  gap: 0.5rem 1.5rem; justify-content: center; font-size: 0.85rem;
}
.footer-products-list a { color: var(--color-text-muted); }
.footer-products-list a:hover { color: var(--color-primary); }
.product-dot {
  display: inline-block; width: 8px; height: 8px;
  border-radius: 50%; margin-right: 0.35rem;
}

/* ---------- Footer bottom ---------- */
.footer-bottom {
  max-width: var(--max-width); margin: 1rem auto 0;
  text-align: center; font-size: 0.85rem; color: var(--color-text-muted);
}

/* ---------- Content pages ---------- */
.content-page {
  max-width: 750px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}
.content-page h1 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 1rem;
}
.content-page h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
}
.content-page h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 1.5rem 0 0.5rem;
}
.content-page p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.content-page ul, .content-page ol {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}
.content-page li {
  margin-bottom: 0.35rem;
}

/* ---------- Template cards ---------- */
.template-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.template-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.template-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}
.template-card .field-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.template-card .field-list li {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ---------- Rating stars ---------- */
.rating-group {
  display: flex; gap: 0.25rem; margin: 0.5rem 0;
}
.rating-group label {
  font-size: 1.5rem; cursor: pointer; color: var(--color-border);
  transition: color 0.1s;
}
.rating-group input { display: none; }
.rating-group label:hover,
.rating-group label:hover ~ label { color: var(--color-primary); }
.rating-group input:checked ~ label { color: var(--color-primary); }

/* ---------- Success page ---------- */
.success-box {
  max-width: 600px;
  margin: 4rem auto;
  padding: 2rem 1.5rem;
  text-align: center;
}
.success-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.success-box h1 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}
.success-box p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* ---------- Scroll reveal ---------- */
[data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity 0.5s, transform 0.5s; }
[data-reveal].visible { opacity: 1; transform: translateY(0); }

/* ---------- Print ---------- */
@media print {
  .announcement-bar, .site-header, .mobile-toggle, .theme-toggle,
  .skip-link, .buy-btn, .hero-cta, .site-footer, .author-section { display: none !important; }
  body { background: #fff; color: #000; }
}

/* ---------- Utility ---------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }