/* ThermaBlind — production stylesheet.
   Part 1: Modernist design-system tokens + components (source of truth: design handoff styles.css).
   Part 2: page layout classes + responsive rules for the real build. */

/* ══════════ Part 1 — tokens & components ══════════ */

:root {
  --color-bg: #f3f2f2;
  --color-surface: #eae9e9;
  --color-text: #201e1d;
  --color-accent: #ec3013;
  --color-accent-2: #e15b47;
  --color-divider: color-mix(in srgb, #201e1d 40%, transparent);

  --color-neutral-100: #f8f4f4;
  --color-neutral-200: #eae7e7;
  --color-neutral-300: #d7d3d3;
  --color-neutral-400: #bab6b6;
  --color-neutral-500: #9b9797;
  --color-neutral-600: #7d7979;
  --color-neutral-700: #605d5d;
  --color-neutral-800: #444141;
  --color-neutral-900: #2d2b2b;

  --color-accent-100: #fff2ef;
  --color-accent-200: #ffe0d9;
  --color-accent-300: #ffc4b8;
  --color-accent-400: #ff9783;
  --color-accent-500: #ff563c;
  --color-accent-600: #dd2b0f;
  --color-accent-700: #ae1800;
  --color-accent-800: #7c1405;
  --color-accent-900: #4d170e;

  --font-heading: "Archivo", system-ui, sans-serif;
  --font-heading-weight: 800;
  --font-body: "Archivo", system-ui, sans-serif;

  --space-1: 4px; --space-2: 8px; --space-3: 12px;
  --space-4: 16px; --space-6: 24px; --space-8: 32px;

  --radius-sm: 0px; --radius-md: 0px; --radius-lg: 0px;

  --shadow-sm: 0 1px 2px color-mix(in srgb, #2d2b2b 14%, transparent);
  --shadow-md: 0 3px 10px color-mix(in srgb, #2d2b2b 16%, transparent);
  --shadow-lg: 0 12px 32px color-mix(in srgb, #2d2b2b 22%, transparent);

  --pad-x: clamp(20px, 5vw, 72px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--color-bg); color: var(--color-text);
  font-family: var(--font-body); font-size: 15px; line-height: 1.55; font-weight: 400;
  text-wrap: pretty;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 var(--space-2);
}
p { margin: 0 0 var(--space-3); }
a { color: var(--color-text); text-underline-offset: 3px; }
a:hover { color: var(--color-accent); }
img { display: block; max-width: 100%; }
figure { margin: 0; }
.grayscale { filter: grayscale(1) contrast(1.08); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

.hr { height: 2px; border: 0; margin: 0; background: var(--color-divider); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 14px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid transparent;
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: var(--radius-md);
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--color-accent); color: var(--color-bg); }
.btn-primary:hover { background: var(--color-accent-600); color: var(--color-bg); }
.btn-primary:active { background: var(--color-accent-700); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-ghost { color: var(--color-accent); padding-inline: var(--space-1); }
.btn-ghost:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-ghost:active { background: color-mix(in srgb, var(--color-accent) 18%, transparent); }
.btn-inverse { color: var(--color-bg); border-color: var(--color-bg); }
.btn-inverse:hover { background: color-mix(in srgb, #ffffff 15%, transparent); color: var(--color-bg); }

.field > .label, .label {
  display: block; font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 6px;
}
.input {
  width: 100%; min-height: 36px; padding: 6px 10px; font: inherit;
  font-size: 14px; color: var(--color-text); caret-color: var(--color-accent);
  background: var(--color-surface);
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
}
.input:hover { border-color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.input:focus-visible { border-color: var(--color-accent); outline-offset: 0; }
textarea.input { min-height: 90px; resize: vertical; }

.nav {
  display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap;
  padding: var(--space-3) var(--pad-x);
  padding-inline: max(var(--pad-x), calc((100% - 1240px) / 2 + var(--pad-x)));
  border-bottom: 2px solid var(--color-divider);
}
.nav-brand {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 18px; margin-right: auto; color: var(--color-text); text-decoration: none;
}
.nav a { color: inherit; text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--color-accent); }
.nav a[aria-current='page'] { color: var(--color-accent); box-shadow: inset 0 -2px 0 var(--color-accent); }
.nav a.btn-primary { color: var(--color-bg); }
.nav a.btn-primary:hover { color: var(--color-bg); }
.nav a.btn-primary[aria-current='page'] { background: var(--color-accent-700); box-shadow: none; }
.nav .btn-ghost { white-space: nowrap; }

/* ══════════ Part 2 — layout & pages ══════════ */

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 var(--pad-x); }

.kicker {
  display: block; font-size: 13px; line-height: 14px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--color-accent-700); margin: 0 0 28px;
}
.kicker-tight { margin-bottom: 14px; }
.muted { color: color-mix(in srgb, var(--color-text) 70%, transparent); }
.body-muted { color: color-mix(in srgb, var(--color-text) 78%, transparent); }

.display-1 {
  font-size: clamp(38px, 4.6vw, 64px); line-height: 1.06; letter-spacing: -0.02em;
  margin: 0 0 0 -0.058em;
}
.display-2 { font-size: clamp(26px, 2.8vw, 38px); line-height: 1.15; margin: 0; }
.lede { font-size: 17px; line-height: 28px; margin: 28px 0 0; }

.grid-2, .grid-75, .grid-57 {
  display: grid; gap: 28px clamp(28px, 5vw, 84px); align-items: center;
}
.grid-2  { grid-template-columns: minmax(0,6fr) minmax(0,6fr); }
.grid-75 { grid-template-columns: minmax(0,7fr) minmax(0,5fr); }
.grid-57 { grid-template-columns: minmax(0,5fr) minmax(0,7fr); }
.grid-start { align-items: start; }

.section { padding: 70px 0; }
.section-hero { padding: 70px 0 84px; }
.section-tail { padding: 70px 0 84px; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px,1fr)); gap: clamp(20px,3vw,42px); }
.tile { display: flex; flex-direction: column; gap: 14px; text-decoration: none; color: inherit; }
.tile h2 { font-size: 22px; line-height: 28px; letter-spacing: -0.01em; margin: 0; }
.tile .tile-note { font-size: 15px; line-height: 24px; margin: 0; color: color-mix(in srgb, var(--color-text) 78%, transparent); }
.tile .tile-price { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 17px; margin: 0; color: var(--color-accent-700); }
.tile:hover h2 { color: var(--color-accent); }

.steps { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: clamp(20px,3vw,42px); }
.step { border-top: 2px solid var(--color-divider); padding-top: 18px; }
.step .num { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 15px; line-height: 28px; margin: 0; font-feature-settings: 'tnum' 1; }
.step h3 { font-size: 22px; line-height: 28px; margin: 8px 0 0; }
.step p:not(.num) { font-size: 15px; line-height: 24px; margin: 10px 0 0; color: color-mix(in srgb, var(--color-text) 78%, transparent); }

.banner { background: var(--color-accent); color: var(--color-bg); }
.banner a { color: var(--color-bg); }
.banner .banner-title {
  font-size: clamp(32px, 3.8vw, 52px); line-height: 1.06; letter-spacing: -0.015em;
  margin: 0 0 0 -0.058em;
}
.banner .lede { max-width: 52ch; }

.stats { display: grid; grid-template-columns: repeat(4, auto); justify-content: space-between; gap: 42px 28px; }
.stat-num {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(34px, 3.4vw, 48px); line-height: 56px; color: var(--color-accent);
  margin: 0 0 0 -0.045em;
}
.stat-label {
  font-size: 13px; line-height: 18px; letter-spacing: 0.08em; text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
  margin: 14px 0 0; max-width: 20ch;
}

.footer {
  padding: 42px 0; font-size: 13px; line-height: 28px;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
  border-top: 2px solid var(--color-divider);
}
.footer-plain { border-top: 0; padding: 56px 0; }

/* — configurator (order page) — */
.opt-btn {
  cursor: pointer; text-align: left; font-family: var(--font-body); font-size: 14px;
  background: transparent; color: var(--color-text);
  border: 2px solid var(--color-divider); padding: 10px 16px;
}
.opt-btn:hover { border-color: var(--color-accent); }
.opt-btn.selected { background: var(--color-accent-100); border-color: var(--color-accent); }

.mode-btn {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 16px; padding: 12px 20px;
}
.fabric-btn {
  padding: 14px 18px; display: flex; justify-content: space-between; gap: 14px;
  align-items: baseline; flex-wrap: wrap; width: 100%;
}
.fabric-btn .fabric-name { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 17px; }
.fabric-btn .fabric-note { font-size: 14px; color: color-mix(in srgb, var(--color-text) 70%, transparent); }

.swatch-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 12px; }
.swatch-btn {
  cursor: pointer; text-align: left; font-family: var(--font-body);
  background: none; border: 2px solid var(--color-divider); padding: 6px;
  display: flex; flex-direction: column; gap: 8px;
}
.swatch-btn:hover { border-color: var(--color-accent); }
.swatch-btn.selected { border-color: var(--color-accent); }
.swatch-btn img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.swatch-btn span { font-size: 13px; line-height: 16px; padding: 0 2px 4px; }

.summary-card {
  position: sticky; top: 24px; display: flex; flex-direction: column;
  border: 2px solid var(--color-divider);
}
.summary-card > img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.summary-body {
  padding: clamp(20px, 2.5vw, 32px); display: flex; flex-direction: column; gap: 14px;
  border-top: 2px solid var(--color-divider);
}
.summary-line {
  font-size: 13px; line-height: 18px; letter-spacing: 0.08em; text-transform: uppercase;
  margin: 0; color: color-mix(in srgb, var(--color-text) 70%, transparent);
}
.summary-price {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(38px, 3.6vw, 52px); line-height: 1.06; margin: 0; color: var(--color-accent);
}
.summary-note { font-size: 13px; line-height: 20px; margin: 0; color: color-mix(in srgb, var(--color-text) 70%, transparent); }

/* — cart panel — */
.cart-panel {
  border: 2px solid var(--color-divider); margin-top: 24px;
  padding: clamp(20px, 2.5vw, 32px); display: flex; flex-direction: column; gap: 14px;
}
.cart-row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 14px;
  border-top: 2px solid var(--color-divider); padding-top: 8px;
}
.cart-row .price { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 15px; color: var(--color-accent-700); }
.cart-remove {
  cursor: pointer; background: none; border: none; font-family: var(--font-body);
  font-size: 13px; color: color-mix(in srgb, var(--color-text) 70%, transparent);
  text-decoration: underline; padding: 0;
}
.cart-total-row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 14px;
  border-top: 2px solid var(--color-text); padding-top: 10px;
}
.cart-total-row .total {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 20px; color: var(--color-accent);
}
.cart-contact { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin-top: 4px; }

.form-msg { font-size: 15px; line-height: 24px; margin: 0; }
.form-msg.error { color: var(--color-accent-700); }

/* — responsive — */
@media (max-width: 900px) {
  .grid-2, .grid-75, .grid-57 { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .stats { grid-template-columns: repeat(2, auto); }
  .summary-card { position: static; }
  .cart-contact { grid-template-columns: 1fr; }
  .section, .section-hero, .section-tail { padding: 48px 0; }
  .nav { gap: var(--space-3); row-gap: 10px; }
}
@media (max-width: 560px) {
  .stats { grid-template-columns: 1fr; }
  .nav { justify-content: flex-start; }
  .nav-brand { flex-basis: 100%; }
}

.nav .btn-ghost { gap: 0; }