/* Kaihex: navy, paper and amber. Shared tokens and page components. */

:root {
  /* Color */
  --color-ink: #16253D;
  --color-ink-soft: #2C3E54;
  --color-paper: #FBFAF7;
  --color-paper-dim: #F1EEE6;
  --color-amber: #D9A62B;
  --color-amber-dark: #B3860F;
  --color-slate: #5C7086;
  --color-border: #DEDAD0;

  /* Type */
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --fs-sm: 0.9375rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 2rem;
  --fs-2xl: clamp(2.25rem, 4.5vw + 1rem, 3.75rem);

  /* Layout */
  --container: 1120px;
  --radius: 4px;
  --border-thin: 1px solid var(--color-border);

  /* Spacing */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
}

/* ============================================
   RESET
   ============================================ */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-amber);
  outline-offset: 2px;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  color: var(--color-ink);
}

h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); margin-bottom: var(--space-3); max-width: 30ch; }
h3 { font-size: var(--fs-lg); margin-bottom: var(--space-1); }

p { max-width: 62ch; }

.section-lead {
  font-size: var(--fs-md);
  color: var(--color-slate);
  margin-bottom: var(--space-4);
  max-width: 50ch;
}

/* ============================================
   LAYOUT HELPERS
   ============================================ */

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

main section {
  padding-block: var(--space-6);
}

/* Shared grid structure; each section sets its own spacing. */
.hero-inner,
.why-grid,
.trades-grid,
.services-grid,
.pricing-grid,
.examples-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-base);
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  transition: background-color 150ms ease, color 150ms ease, transform 150ms ease;
}

.btn-primary {
  background: var(--color-amber);
  color: var(--color-ink);
}

.btn-primary:hover {
  background: var(--color-amber-dark);
  transform: translateY(-1px);
}

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

.btn-ghost:hover {
  background: var(--color-ink);
  color: var(--color-paper);
}

.btn-large {
  font-size: var(--fs-md);
  padding: 1rem 2.25rem;
}

.text-link {
  font-weight: 600;
  color: var(--color-ink);
  border-bottom: 2px solid var(--color-amber);
  padding-bottom: 2px;
}

.text-link:hover { color: var(--color-amber-dark); }

/* ============================================
   HEADER / NAV
   ============================================ */

.site-header {
  border-bottom: var(--border-thin);
  background: var(--color-paper);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-2);
  flex-wrap: wrap;
  gap: var(--space-2);
}

.logo {
  display: inline-flex;
  align-items: center;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.75rem;
  line-height: 1;
  -webkit-text-stroke: 0.5px #000;
}

.wordmark-k {
  height: 1.0em;
  width: auto;
  flex: 0 0 auto;
  margin-right: 0.03em;
  transform: translateY(0.02em);
  -webkit-text-stroke: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.site-nav a { font-weight: 500; color: var(--color-ink-soft); }
.site-nav a:hover { color: var(--color-ink); }

.site-nav a.nav-cta {
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
}

.site-nav a.nav-cta:hover { background: var(--color-ink-soft); }

/* ============================================
   HERO
   ============================================ */

.hero-inner {
  gap: var(--space-5);
  align-items: center;
}

.hero-sub {
  font-size: var(--fs-md);
  color: var(--color-slate);
  margin-block: var(--space-3);
}

.hero-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}

.hero-art { max-width: 320px; margin-inline: auto; }

.art-ink-stroke { stroke: var(--color-ink); }
.art-ink-fill { fill: var(--color-ink); }
.art-amber-fill { fill: var(--color-amber); }
.art-amber-stroke,
.art-sign-board { stroke: var(--color-amber); }

@media (prefers-reduced-motion: no-preference) {
  .hero-copy {
    animation: rise-in 700ms ease-out both;
  }
  .hero-art {
    animation: rise-in 700ms 150ms ease-out both;
  }
}

@keyframes rise-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================
   WHY IT MATTERS
   ============================================ */

.why,
.examples,
.faq { background: var(--color-paper-dim); }

.examples,
.faq { scroll-margin-top: 7rem; }

.why-grid {
  gap: var(--space-4);
}

.why-item p { color: var(--color-slate); }

/* ============================================
   WHO WE HELP
   ============================================ */

.trades-grid {
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.trade-card {
  border: var(--border-thin);
  border-radius: var(--radius);
  padding: var(--space-3);
}

.trade-icon {
  width: 32px;
  height: 32px;
  color: var(--color-amber-dark);
  margin-bottom: var(--space-2);
}

.trade-card p { color: var(--color-slate); font-size: var(--fs-sm); }

.trades-note {
  margin-top: var(--space-4);
  color: var(--color-slate);
  font-style: italic;
}

/* ============================================
   SERVICES
   ============================================ */

.services-grid {
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.service-card {
  border-top: 3px solid var(--color-ink);
  padding-top: var(--space-3);
}

.service-card p { color: var(--color-slate); margin-bottom: var(--space-2); }

.service-card .service-price {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-lg);
  color: var(--color-ink);
}

.service-area {
  margin-top: var(--space-4);
  color: var(--color-slate);
  font-size: var(--fs-sm);
  max-width: 60ch;
}

/* ============================================
   PRICING
   ============================================ */

.pricing-grid {
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.price-tier {
  border: var(--border-thin);
  border-radius: var(--radius);
  padding: var(--space-3);
}

.price-tier-highlight {
  border-color: var(--color-amber);
  border-width: 2px;
  background: var(--color-paper-dim);
}

.price-amount {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  margin-block: var(--space-1);
}

.price-desc { color: var(--color-slate); margin-bottom: var(--space-2); }

.price-tier li {
  padding-block: 0.4rem;
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-sm);
}

.price-tier li:first-child { border-top: none; }

.price-note {
  margin-top: var(--space-2);
  font-weight: 600;
  color: var(--color-amber-dark);
  font-size: var(--fs-sm);
}

.pricing-footnote {
  margin-top: var(--space-4);
  color: var(--color-slate);
}

/* ============================================
   ABOUT
   ============================================ */

.about { background: var(--color-ink); color: var(--color-paper); }
.about h2 { color: var(--color-paper); }
.about p { color: var(--color-paper-dim); max-width: 65ch; }
.about-inner { max-width: 800px; }
.about p + p {
  margin-top: var(--space-3);
}

/* ============================================
   CTA BAND
   ============================================ */

.cta-band {
  background: var(--color-amber);
  text-align: left;
}

.cta-inner { max-width: 640px; }

.cta-band h2 { margin-bottom: var(--space-2); }

.cta-band p {
  color: var(--color-ink-soft);
  margin-bottom: var(--space-3);
}

.cta-band .btn-primary {
  background: var(--color-ink);
  color: var(--color-paper);
}

.cta-band .btn-primary:hover { background: var(--color-ink-soft); }
/* ============================================
   QUOTE REQUEST FORM
   ============================================ */

#contact-cta {
  scroll-margin-top: 8rem;
}

.quote-form {
  margin-top: var(--space-4);
  padding: clamp(1rem, 4vw, 2rem);
  background: var(--color-paper);
  border: var(--border-thin);
  border-radius: var(--radius);
  text-align: left;
}

.form-field {
  min-width: 0;
  margin-bottom: var(--space-2);
}

.form-field label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--color-ink);
  font-size: var(--fs-sm);
  font-weight: 600;
}

.form-field label span {
  color: var(--color-ink-soft);
  font-size: 0.8125rem;
  font-weight: 400;
}

.form-field input,
.form-field select,
.form-field textarea {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 0.75rem;
  border: 1px solid var(--color-slate);
  border-radius: var(--radius);
  background: #fff;
  color: var(--color-ink);
  font: inherit;
}

.form-field textarea {
  min-height: 130px;
  resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--color-slate);
  opacity: 1;
}

.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible {
  outline: 3px solid var(--color-amber-dark);
  outline-offset: 2px;
}

.cta-band .form-privacy {
  margin-bottom: var(--space-3);
  color: var(--color-ink-soft);
  font-size: 0.8125rem;
}

.quote-form button {
  width: 100%;
  min-height: 48px;
  cursor: pointer;
}

.quote-form button:disabled {
  opacity: 0.65;
  cursor: wait;
  transform: none;
}

.cta-band .form-status {
  margin: var(--space-2) 0 0;
  font-size: var(--fs-sm);
  font-weight: 600;
}

.form-status:empty {
  display: none;
}

.cta-band .form-status[data-state="success"] {
  color: #236137;
}

.cta-band .form-status[data-state="error"] {
  color: #a02720;
}

/* ============================================
   CONCEPT EXAMPLES
   ============================================ */

.examples-grid {
  gap: var(--space-3);
}

.example-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--space-3);
  border: var(--border-thin);
  border-top: 3px solid var(--color-amber);
  border-radius: var(--radius);
  background: var(--color-paper);
}

.example-card h3 {
  margin-bottom: var(--space-2);
}

.example-card p {
  margin-bottom: var(--space-3);
  color: var(--color-slate);
}

.example-card .text-link {
  margin-top: auto;
}

/* ============================================
   FREQUENTLY ASKED QUESTIONS
   ============================================ */

.faq-list {
  max-width: 800px;
  margin-top: var(--space-4);
  border-top: var(--border-thin);
}

.faq-item {
  border-bottom: var(--border-thin);
}

.faq-item summary {
  padding: var(--space-3) var(--space-2);
  color: var(--color-ink);
  font-weight: 600;
  cursor: pointer;
}

.faq-item summary::marker {
  color: var(--color-amber-dark);
}

.faq-item summary:hover {
  background: var(--color-paper);
}

.faq-item summary:focus-visible {
  outline: 3px solid var(--color-amber-dark);
  outline-offset: -3px;
}

.faq-item[open] {
  background: var(--color-paper);
}

.faq-item p {
  max-width: 65ch;
  padding: 0 var(--space-2) var(--space-3);
  color: var(--color-ink-soft);
}
/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  border-top: var(--border-thin);
  padding-block: var(--space-4);
  font-size: var(--fs-sm);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-md);
}

.footer-tagline { color: var(--color-slate); }

.footer-nav { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.footer-nav a { color: var(--color-slate); }
.footer-nav a:hover { color: var(--color-ink); }

.footer-copy { color: var(--color-slate); font-size: 0.8125rem; }

/* ============================================
   RESPONSIVE LAYOUTS
   ============================================ */

@media (min-width: 640px) {
  .why-grid,
  .pricing-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .trades-grid,
  .services-grid,
  .examples-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .quote-form button { width: auto; }
}

@media (min-width: 900px) {
  .hero-inner { grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); }
  .hero-art { margin-inline: 0; }
  .trades-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .examples-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}