/* ==========================================================================
   Denim Designs — shared stylesheet
   ========================================================================== */

:root {
  --denim-900: #1c2e3f;
  --denim-700: #2c4a63;
  --denim-500: #3f6483;
  --denim-300: #8aa9bd;
  --denim-100: #dfe8ee;
  --copper: #b5651d;
  --copper-dark: #8f4e16;
  --canvas: #f5efe1;
  --canvas-dark: #e8dfc9;
  --charcoal: #26282b;
  --cream: #fbf7ef;

  --font-heading: 'Bitter', Georgia, serif;
  --font-nav: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'Work Sans', Arial, sans-serif;

  --max-width: 1140px;
  --radius: 4px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--charcoal);
  background: var(--canvas);
  line-height: 1.6;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--denim-700); }
a:hover { color: var(--copper); }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--denim-900);
  line-height: 1.2;
  margin: 0 0 .5em;
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--font-nav);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: .8rem;
  color: var(--copper);
  font-weight: 600;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-nav);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: .85rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s ease, color .15s ease, border-color .15s ease, transform .1s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--copper);
  color: var(--cream);
  border-color: var(--copper);
}
.btn-primary:hover { background: var(--copper-dark); border-color: var(--copper-dark); color: var(--cream); }

.btn-outline {
  background: transparent;
  color: var(--cream);
  border-color: var(--cream);
}
.btn-outline:hover { background: var(--cream); color: var(--denim-900); }

.btn-dark {
  background: var(--denim-700);
  color: var(--cream);
  border-color: var(--denim-700);
}
.btn-dark:hover { background: var(--denim-900); border-color: var(--denim-900); color: var(--cream); }

.btn-block { width: 100%; justify-content: center; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* ---------- stitched motif ---------- */
.stitched {
  border: 2px dashed var(--copper);
  border-radius: var(--radius);
}

.rivet {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--copper);
  box-shadow: 0 0 0 2px var(--cream);
}

/* ---------- header / nav ---------- */
.site-header {
  background: var(--denim-900);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 3px solid var(--copper);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--cream);
}
.brand img { width: 44px; height: 44px; }
.brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--cream);
  letter-spacing: .5px;
}
.brand-tag {
  display: block;
  font-family: var(--font-nav);
  font-size: .65rem;
  letter-spacing: 2px;
  color: var(--denim-300);
  text-transform: uppercase;
}

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a {
  font-family: var(--font-nav);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--denim-100);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover,
.main-nav a.active { color: var(--cream); border-bottom-color: var(--copper); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--denim-300);
  color: var(--cream);
  font-family: var(--font-nav);
  padding: 8px 12px;
  border-radius: var(--radius);
  cursor: pointer;
}

.cart-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--copper);
  color: var(--cream);
  font-size: .65rem;
  font-family: var(--font-nav);
  margin-left: 6px;
}

/* ---------- hero ---------- */
.hero {
  background:
    repeating-linear-gradient(115deg, rgba(255,255,255,.03) 0 2px, transparent 2px 6px),
    linear-gradient(160deg, var(--denim-700), var(--denim-900));
  color: var(--cream);
  padding: 90px 0 70px;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items: center;
}
.hero h1 { color: var(--cream); }
.hero p.lead { font-size: 1.1rem; color: var(--denim-100); max-width: 46ch; }
.hero-actions { display: flex; gap: 16px; margin-top: 28px; flex-wrap: wrap; }
.hero-badge-wrap { display: flex; justify-content: center; }
.hero-badge-wrap img { width: 100%; max-width: 320px; filter: drop-shadow(0 12px 24px rgba(0,0,0,.35)); }

/* ---------- sections ---------- */
section { padding: 64px 0; }
.section-alt { background: var(--canvas-dark); }
.section-dark { background: var(--denim-900); color: var(--cream); }
.section-dark h2, .section-dark h3 { color: var(--cream); }
.section-head { max-width: 620px; margin: 0 auto 40px; text-align: center; }

.grid {
  display: grid;
  gap: 28px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--cream);
  border: 1px solid var(--canvas-dark);
  border-radius: var(--radius);
  padding: 28px 24px;
  position: relative;
}
.card::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px dashed var(--denim-300);
  border-radius: 2px;
  pointer-events: none;
}
.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--denim-100);
  color: var(--denim-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: 16px;
}

.steps { counter-reset: step; }
.step {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px dashed var(--denim-300);
}
.step:last-child { border-bottom: none; }
.step-num {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--copper);
  min-width: 44px;
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--denim-900);
  color: var(--denim-100);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--denim-700);
}
.footer-grid h4 { color: var(--cream); font-family: var(--font-nav); font-size: .85rem; text-transform: uppercase; letter-spacing: 1px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { color: var(--denim-100); text-decoration: none; font-size: .92rem; }
.footer-grid a:hover { color: var(--copper); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  font-size: .8rem;
  color: var(--denim-300);
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- page hero (inner pages) ---------- */
.page-hero {
  background: var(--denim-900);
  color: var(--cream);
  padding: 56px 0;
  text-align: center;
}
.page-hero h1 { color: var(--cream); margin-bottom: 8px; }
.page-hero p { color: var(--denim-100); }

/* ---------- configurator ---------- */
.configurator {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 40px;
  align-items: start;
}
.config-panel {
  background: var(--cream);
  border: 1px solid var(--canvas-dark);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
}
.config-panel h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 2px dashed var(--denim-300);
  padding-bottom: 12px;
  margin-bottom: 20px;
}
.config-panel h3 .n {
  background: var(--denim-700);
  color: var(--cream);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-nav);
  font-size: .8rem;
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}

.option {
  position: relative;
  cursor: pointer;
}
.option input { position: absolute; opacity: 0; }
.option .option-card {
  border: 2px solid var(--canvas-dark);
  border-radius: var(--radius);
  padding: 12px 10px;
  text-align: center;
  background: var(--canvas);
  transition: border-color .15s ease, background .15s ease;
  height: 100%;
}
.option .swatch {
  width: 100%;
  height: 46px;
  border-radius: 3px;
  margin-bottom: 8px;
  border: 1px solid rgba(0,0,0,.15);
}
.option .option-label { font-size: .82rem; font-weight: 600; }
.option .option-price { font-size: .72rem; color: var(--denim-500); }
.option input:checked + .option-card {
  border-color: var(--copper);
  background: var(--denim-100);
}
.option input:focus-visible + .option-card {
  outline: 2px solid var(--denim-500);
  outline-offset: 2px;
}

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: .85rem; font-weight: 600; color: var(--denim-900); }
.field .hint { font-size: .75rem; color: var(--denim-500); font-weight: 400; }
.field input[type="number"],
.field input[type="text"],
.field select,
.field textarea {
  font-family: var(--font-body);
  font-size: .95rem;
  padding: 10px 12px;
  border: 1px solid var(--denim-300);
  border-radius: var(--radius);
  background: var(--canvas);
  color: var(--charcoal);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--copper);
}

.unit-toggle {
  display: inline-flex;
  border: 1px solid var(--denim-300);
  border-radius: var(--radius);
  overflow: hidden;
  font-family: var(--font-nav);
  font-size: .78rem;
}
.unit-toggle button {
  background: var(--canvas);
  border: none;
  padding: 6px 14px;
  cursor: pointer;
  color: var(--denim-700);
}
.unit-toggle button.active { background: var(--denim-700); color: var(--cream); }

/* order summary */
.summary {
  position: sticky;
  top: 96px;
  background: var(--denim-900);
  color: var(--cream);
  border-radius: var(--radius);
  padding: 26px;
  border: 1px solid var(--denim-700);
}
.summary h3 { color: var(--cream); margin-bottom: 16px; }
.summary-line {
  display: flex;
  justify-content: space-between;
  font-size: .88rem;
  padding: 7px 0;
  border-bottom: 1px dashed var(--denim-700);
  color: var(--denim-100);
}
.summary-line span:last-child { color: var(--cream); font-weight: 600; }
.summary-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin: 18px 0;
  padding-top: 12px;
  border-top: 2px solid var(--copper);
}
.summary-total .label { font-family: var(--font-nav); text-transform: uppercase; letter-spacing: 1px; font-size: .85rem; color: var(--denim-100); }
.summary-total .amount { font-family: var(--font-heading); font-size: 1.8rem; font-weight: 700; color: var(--cream); }
.summary small { color: var(--denim-300); font-size: .75rem; display: block; margin-top: 10px; }

.form-error { color: #d9743b; font-size: .8rem; margin-top: 4px; display: none; }
.field.invalid input { border-color: #d9743b; }
.field.invalid .form-error { display: block; }

/* ---------- cart page ---------- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}
.cart-summary {
  max-width: 640px;
  margin: 0 auto;
  background: var(--cream);
  border: 1px solid var(--canvas-dark);
  border-radius: var(--radius);
  padding: 32px;
}
.cart-summary .summary-line { color: var(--denim-900); border-color: var(--canvas-dark); }
.cart-summary .summary-line span:last-child { color: var(--denim-900); }
.cart-summary .summary-total { border-top-color: var(--copper); }
.cart-summary .summary-total .label { color: var(--denim-700); }
.cart-summary .summary-total .amount { color: var(--denim-900); }

.notice {
  background: var(--denim-100);
  border-left: 4px solid var(--denim-700);
  padding: 14px 18px;
  border-radius: 2px;
  font-size: .9rem;
  margin-bottom: 24px;
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-badge-wrap { order: -1; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .configurator { grid-template-columns: 1fr; }
  .summary { position: static; }
}

@media (max-width: 640px) {
  .main-nav { position: fixed; inset: 64px 0 auto 0; background: var(--denim-900); flex-direction: column; padding: 16px 24px; gap: 4px; border-bottom: 3px solid var(--copper); transform: translateY(-120%); transition: transform .2s ease; }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { width: 100%; padding: 12px 0; }
  .nav-toggle { display: inline-block; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
}