/* ============================================================
   FLOOR IT HARDWOOD FLOORS — Design System
   main.css: variables, reset, typography, layout, utilities
   ============================================================ */

/* --- Custom Properties ------------------------------------ */
:root {
  /* Color palette — warm wood tones, no gradients */
  --ink:            #0c0805;
  --charcoal:       #1c1208;
  --bark:           #2e1d0a;
  --bark-mid:       #3d2710;
  --amber:          #c88b2a;
  --amber-dark:     #a87220;
  --amber-light:    #e8aa48;
  --parchment:      #f5f0e8;
  --cream:          #faf8f5;
  --grain:          #ede5d8;
  --smoke:          #7a6a56;
  --ash:            #b8a898;
  --white:          #ffffff;

  /* Semantic aliases */
  --bg-dark:        var(--ink);
  --bg-dark-alt:    var(--charcoal);
  --bg-mid-dark:    var(--bark);
  --bg-light:       var(--cream);
  --bg-light-alt:   var(--parchment);
  --bg-warm:        var(--grain);

  --text-on-dark:   #f0e8da;
  --text-muted-dark:var(--ash);
  --text-on-light:  var(--charcoal);
  --text-muted-light:var(--smoke);

  --cta:            var(--amber);
  --cta-hover:      var(--amber-dark);
  --cta-text:       var(--ink);

  --border-dark:    rgba(255,255,255,0.08);
  --border-light:   rgba(0,0,0,0.08);

  /* Typography */
  --font-body:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display:   'Inter', Georgia, serif;

  /* Scale */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.125rem;
  --text-lg:   1.25rem;
  --text-xl:   1.5rem;
  --text-2xl:  2rem;
  --text-3xl:  2.5rem;
  --text-4xl:  3.25rem;
  --text-5xl:  4.25rem;
  --text-6xl:  5.5rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Section rhythm */
  --section-py:    clamp(4rem, 8vw, 8rem);
  --section-py-sm: clamp(2.5rem, 5vw, 5rem);

  /* Layout */
  --container-max:  1200px;
  --container-wide: 1380px;
  --container-px:   clamp(1.25rem, 5vw, 2.5rem);

  /* Effects */
  --radius-sm:  4px;
  --radius:     8px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  --shadow-sm:   0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
  --shadow:      0 4px 16px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.08);
  --shadow-lg:   0 12px 40px rgba(0,0,0,0.18), 0 4px 12px rgba(0,0,0,0.10);
  --shadow-xl:   0 24px 64px rgba(0,0,0,0.22);

  --transition: 0.25s ease;
  --transition-slow: 0.5s ease;

  /* Header height */
  --header-h: 72px;
}

/* --- Reset ------------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--text-on-light);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol { list-style: none; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* --- Typography ------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: inherit;
}

h1 { font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl)); }
h2 { font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl)); }
h3 { font-size: clamp(var(--text-xl), 2.5vw, var(--text-2xl)); }
h4 { font-size: var(--text-lg); font-weight: 700; }
h5 { font-size: var(--text-base); font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }
h6 { font-size: var(--text-sm); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }

p { max-width: 68ch; }

.lead {
  font-size: var(--text-md);
  line-height: 1.7;
  color: var(--text-muted-light);
}

.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: var(--space-4);
}

/* --- Layout ----------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

.container--wide {
  max-width: var(--container-wide);
}

.section {
  padding-block: var(--section-py);
}

.section--sm {
  padding-block: var(--section-py-sm);
}

.section--dark  { background: var(--bg-dark); color: var(--text-on-dark); }
.section--mid   { background: var(--bg-dark-alt); color: var(--text-on-dark); }
.section--bark  { background: var(--bg-mid-dark); color: var(--text-on-dark); }
.section--light { background: var(--bg-light); color: var(--text-on-light); }
.section--alt   { background: var(--bg-light-alt); color: var(--text-on-light); }
.section--warm  { background: var(--bg-warm); color: var(--text-on-light); }

/* Grid */
.grid {
  display: grid;
  gap: var(--space-8);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.grid--auto-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid--auto-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid--auto-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); }

/* Flex */
.flex { display: flex; }
.flex--center { align-items: center; justify-content: center; }
.flex--between { align-items: center; justify-content: space-between; }
.flex--gap-4  { gap: var(--space-4); }
.flex--gap-6  { gap: var(--space-6); }
.flex--gap-8  { gap: var(--space-8); }

/* Section header */
.section-header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.section-header--center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.section-header p {
  margin-top: var(--space-4);
  font-size: var(--text-md);
  color: var(--text-muted-light);
}
.section--dark  .section-header p,
.section--mid   .section-header p,
.section--bark  .section-header p { color: var(--text-muted-dark); }
.section--dark  .lead,
.section--mid   .lead,
.section--bark  .lead { color: var(--text-muted-dark); }

/* --- Buttons --------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.875rem 2rem;
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  cursor: pointer;
  line-height: 1;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--amber);
  color: var(--ink);
  border-color: var(--amber);
}
.btn--primary:hover {
  background: var(--amber-light);
  border-color: var(--amber-light);
  box-shadow: 0 6px 24px rgba(200, 139, 42, 0.35);
}

.btn--outline-light {
  background: transparent;
  color: var(--text-on-dark);
  border-color: rgba(255,255,255,0.35);
}
.btn--outline-light:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

.btn--outline-dark {
  background: transparent;
  color: var(--text-on-light);
  border-color: var(--bark-mid);
}
.btn--outline-dark:hover {
  background: var(--bark-mid);
  color: var(--text-on-dark);
}

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

.btn--lg { padding: 1.1rem 2.5rem; font-size: var(--text-base); }
.btn--sm { padding: 0.625rem 1.25rem; font-size: var(--text-xs); }
.btn--full { width: 100%; }

/* CTA group */
.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

/* --- Forms ----------------------------------------------- */
.form-grid {
  display: grid;
  gap: var(--space-5);
}
.form-grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-field label {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-on-light);
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--white);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius);
  font-size: var(--text-base);
  color: var(--text-on-light);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(200,139,42,0.15);
}

.form-field input.valid { border-color: #2d9e57; }
.form-field input.invalid { border-color: #c0392b; }

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

.form-field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237a6a56' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-field .hint {
  font-size: var(--text-xs);
  color: var(--smoke);
}

.form-field .err-msg {
  font-size: var(--text-xs);
  color: #c0392b;
  display: none;
}
.form-field.has-error .err-msg { display: block; }

.form-trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--border-light);
  margin-top: var(--space-2);
}
.form-trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--smoke);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.form-trust-item::before {
  content: '';
  width: 14px;
  height: 14px;
  background: var(--amber);
  border-radius: 50%;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='%230c0805' stroke='none' d='M10 3L5 8.5 2 5.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 10px;
}

.form-status {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: var(--text-sm);
  display: none;
}
.form-status--success { background: #d4edda; color: #155724; display: block; }
.form-status--error   { background: #f8d7da; color: #721c24; display: block; }

/* --- Cards ----------------------------------------------- */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card--dark {
  background: var(--charcoal);
  border-color: var(--border-dark);
  color: var(--text-on-dark);
}

/* --- Scroll Animations ----------------------------------- */
[data-animate] {
  opacity: 0;
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-animate="up"]    { transform: translateY(40px); }
[data-animate="left"]  { transform: translateX(-40px); }
[data-animate="right"] { transform: translateX(40px); }
[data-animate="scale"] { transform: scale(0.92); }
[data-animate="fade"]  { transform: none; }

[data-animate].in-view {
  opacity: 1;
  transform: none;
}

[data-delay="1"] { transition-delay: 0.1s; }
[data-delay="2"] { transition-delay: 0.2s; }
[data-delay="3"] { transition-delay: 0.3s; }
[data-delay="4"] { transition-delay: 0.4s; }
[data-delay="5"] { transition-delay: 0.5s; }
[data-delay="6"] { transition-delay: 0.6s; }

/* --- Utility Classes ------------------------------------- */
.text-center { text-align: center; }
.text-amber  { color: var(--amber); }
.text-muted  { color: var(--smoke); }
.text-sm     { font-size: var(--text-sm); }
.text-lg     { font-size: var(--text-lg); }

.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }

.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }

.w-full { width: 100%; }
.block  { display: block; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* --- Dividers -------------------------------------------- */
.divider {
  width: 60px;
  height: 3px;
  background: var(--amber);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}
.section--dark .divider,
.section--mid  .divider,
.section--bark .divider { background: var(--amber); }

/* --- Responsive ------------------------------------------ */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }

  .cta-group { justify-content: center; }
  .cta-group .btn { min-width: 220px; }
}

@media (max-width: 480px) {
  :root { --section-py: clamp(3rem, 8vw, 4rem); }
  p { max-width: 100%; }
}