/* =============================================================================
   ABOPART — Editorial Architectural Design System
   Fonts: DM Serif Display (headings) + DM Sans (body)
   No emojis. No pill badges. No generic gradients.
   ============================================================================= */

/* --- Design Tokens --- */
:root {
  /* Light Mode */
  --c-bg:          #fafaf8;
  --c-surface:     #ffffff;
  --c-muted:       #f4f3f0;
  --c-border:      #e8e6e0;
  --c-ink:         #181714;
  --c-ink-2:       #5a574f;
  --c-ink-3:       #9e9a92;
  --c-gold:        #a8762a;
  --c-gold-hover:  #8a6020;
  --c-gold-subtle: #f5edd8;

  /* Nav */
  --nav-bg:        rgba(250, 250, 248, 0.9);

  /* Shadows — subtle, architectural */
  --sh-card:  0 2px 16px rgba(24, 23, 20, 0.06);
  --sh-modal: 0 20px 60px rgba(24, 23, 20, 0.18);

  /* Transitions */
  --t-fast:   160ms ease;
  --t-med:    320ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --t-slow:   500ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --c-bg:          #111110;
  --c-surface:     #1a1916;
  --c-muted:       #221f1a;
  --c-border:      #2e2b24;
  --c-ink:         #f0ede6;
  --c-ink-2:       #9e9a92;
  --c-ink-3:       #5a574f;
  --c-gold:        #c9963a;
  --c-gold-hover:  #dba94a;
  --c-gold-subtle: rgba(168, 118, 42, 0.15);
  --nav-bg:        rgba(17, 17, 16, 0.9);
  --sh-card:  0 2px 16px rgba(0, 0, 0, 0.3);
  --sh-modal: 0 20px 60px rgba(0, 0, 0, 0.6);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--c-bg);
  color: var(--c-ink);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background var(--t-med), color var(--t-med);
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select { font-family: inherit; font-size: inherit; }

/* --- Typography --- */
.font-serif { font-family: 'DM Serif Display', Georgia, serif; }
em { font-style: italic; font-family: 'DM Serif Display', Georgia, serif; }

h1, h2, h3 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* =============================================================================
   NAVIGATION
   ============================================================================= */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-med), background var(--t-med);
}

.nav.is-scrolled {
  border-bottom-color: var(--c-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav__logo {
  display: flex;
  align-items: baseline;
  gap: 0;
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 1.5rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-ink);
}

.nav__logo-mark {
  color: var(--c-gold);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-ink-2);
  letter-spacing: 0.04em;
  transition: color var(--t-fast);
  position: relative;
}

.nav__link:hover { color: var(--c-ink); }

.nav__link--catalog {
  color: var(--c-gold);
  border-bottom: 1px solid var(--c-gold);
  padding-bottom: 2px;
}
.nav__link--catalog:hover {
  color: var(--c-gold-hover);
  border-bottom-color: var(--c-gold-hover);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--c-border);
  color: var(--c-ink-2);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--t-fast);
}
.theme-toggle:hover { border-color: var(--c-ink); color: var(--c-ink); }
.theme-toggle svg { width: 16px; height: 16px; }
.icon-sun { display: block; }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* Buttons */
.btn-cta {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-ink);
  border: 1px solid var(--c-ink);
  padding: 0.5rem 1.1rem;
  transition: all var(--t-fast);
}
.btn-cta:hover {
  background: var(--c-ink);
  color: var(--c-bg);
}

.btn-primary {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--c-gold);
  color: #fff;
  padding: 0.75rem 1.6rem;
  transition: background var(--t-fast);
  border: none;
  cursor: pointer;
}
.btn-primary:hover { background: var(--c-gold-hover); color: #fff; }
.btn-primary--full { display: block; width: 100%; text-align: center; }

.btn-ghost {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: transparent;
  color: rgba(255,255,255,0.85);
  padding: 0.75rem 1.6rem;
  border: 1px solid rgba(255,255,255,0.4);
  transition: all var(--t-fast);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-color: rgba(255,255,255,0.7);
}

.btn-ghost-white {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: transparent;
  color: #fff;
  padding: 0.75rem 1.6rem;
  border: 1px solid rgba(255,255,255,0.5);
  transition: all var(--t-fast);
  margin-top: 2rem;
}
.btn-ghost-white:hover {
  background: rgba(255,255,255,0.15);
}

/* Hamburger */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--c-ink);
  transition: all var(--t-med);
}
.hamburger.open span:first-child { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:last-child  { transform: translateY(-6.5px) rotate(-45deg); }

/* =============================================================================
   HERO
   ============================================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.6s ease;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to top,
    rgba(12,11,9,0.92) 0%,
    rgba(12,11,9,0.55) 50%,
    rgba(12,11,9,0.2)  100%
  );
}

.hero__content {
  position: relative;
  z-index: 10;
  padding: 6rem 2rem 2.5rem;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
}

.hero__eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  margin-bottom: 1rem;
}

.hero__title {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: clamp(2.4rem, 5.5vw, 4.5rem);
  font-weight: 400;
  color: #ffffff;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.4);
}
.hero__title em {
  color: #d4a34b;
  font-style: italic;
}

.hero__sub {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  max-width: 520px;
  margin-bottom: 2rem;
  line-height: 1.65;
  font-weight: 400;
}

.hero__cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Stats bar at bottom */
.hero__stats {
  position: relative;
  z-index: 10;
  background: rgba(18, 17, 15, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255,255,255,0.15);
  display: flex;
  align-items: stretch;
  width: 100%;
}

.hero__stat {
  flex: 1;
  padding: 1.4rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.hero__stat strong {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 1.7rem;
  color: #ffffff;
  font-weight: 400;
}

.hero__stat span {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

.hero__stat-divider {
  width: 1px;
  background: rgba(255,255,255,0.15);
  align-self: stretch;
}

/* View switcher */
.hero__switcher {
  position: absolute;
  top: 50%;
  right: 2rem;
  transform: translateY(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.hero__switch-btn {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.65);
  padding: 0.45rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--t-fast);
  text-align: left;
}
.hero__switch-btn:hover,
.hero__switch-btn.active {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: #fff;
}

/* =============================================================================
   INTRO STRIP
   ============================================================================= */
.intro-strip {
  background: var(--c-gold);
  padding: 3rem 2rem;
}

.intro-strip__text {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 400;
  font-style: italic;
  color: #fff;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  line-height: 1.5;
}

/* =============================================================================
   SECTIONS — General
   ============================================================================= */
.section {
  padding: 7rem 2rem;
  max-width: 1280px;
  margin: 0 auto;
}

.section--dark {
  background: var(--c-ink);
  max-width: 100%;
  padding: 7rem 2rem;
}

.section--muted {
  background: var(--c-muted);
  max-width: 100%;
  padding: 7rem 2rem;
}

.section__head {
  margin-bottom: 4rem;
}

.section__label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 0.75rem;
}

.section__title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 400;
  color: var(--c-ink);
  max-width: 560px;
}

.section--dark .section__title,
.section--dark .section__label { color: #fff; }
.section--dark .section__label { color: #c9963a; }

/* Section muted label/title */
.section--muted .section__head { max-width: 1280px; margin-left: auto; margin-right: auto; }

/* =============================================================================
   CATALOG TABS
   ============================================================================= */
.catalog-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 3rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.catalog-tabs::-webkit-scrollbar { display: none; }

.cat-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-ink-2);
  cursor: pointer;
  white-space: nowrap;
  margin-bottom: -1px;
  transition: all var(--t-fast);
  letter-spacing: 0.02em;
}
.cat-tab:hover { color: var(--c-ink); }
.cat-tab.active {
  color: var(--c-ink);
  border-bottom-color: var(--c-gold);
}

/* =============================================================================
   PRODUCT CARDS
   ============================================================================= */
.products {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
}

.product-card {
  background: var(--c-surface);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: background var(--t-fast);
}
.product-card:hover { background: var(--c-muted); }

.product-card__img {
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--c-muted);
}
.product-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}
.product-card:hover .product-card__img img {
  transform: scale(1.04);
}

.product-card__body {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card__label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 0.5rem;
}

.product-card__title {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 1.4rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  line-height: 1.25;
}

.product-card__desc {
  font-size: 0.875rem;
  color: var(--c-ink-2);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.product-card__specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1rem;
  border-top: 1px solid var(--c-border);
  padding-top: 1.25rem;
  margin-top: auto;
}

.spec-item { display: flex; flex-direction: column; gap: 0.1rem; }
.spec-item__label {
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-ink-3);
}
.spec-item__val {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-ink);
}

.product-card__action {
  padding: 1rem 1.75rem;
  border-top: 1px solid var(--c-border);
  display: flex;
  gap: 0.75rem;
}

.btn-card {
  flex: 1;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.6rem 0.75rem;
  text-align: center;
  cursor: pointer;
  border: 1px solid var(--c-border);
  background: none;
  color: var(--c-ink);
  transition: all var(--t-fast);
}
.btn-card:hover {
  background: var(--c-ink);
  color: var(--c-bg);
  border-color: var(--c-ink);
}
.btn-card--gold {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: #fff;
}
.btn-card--gold:hover {
  background: var(--c-gold-hover);
  border-color: var(--c-gold-hover);
  color: #fff;
}

/* =============================================================================
   ESTIMATOR (dark section)
   ============================================================================= */
.estimator {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 5rem;
  max-width: 1280px;
  margin: 0 auto;
  align-items: start;
}

.estimator__desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.55);
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
  line-height: 1.7;
  font-weight: 300;
  max-width: 420px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-field label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}

.form-field input,
.form-field select {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color var(--t-fast);
}
.form-field input:focus,
.form-field select:focus {
  border-color: var(--c-gold);
}
.form-field select option {
  background: #1a1916;
  color: #fff;
}

/* Result card */
.est-result {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  padding: 2.25rem;
  position: sticky;
  top: 90px;
}

.est-result__label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-gold);
  display: block;
  margin-bottom: 0.4rem;
}

.est-result__series {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--c-ink);
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--c-border);
}

.est-result__rows { display: flex; flex-direction: column; gap: 0; margin-bottom: 1.5rem; }

.est-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--c-border);
  font-size: 0.875rem;
}
.est-row span { color: var(--c-ink-2); }
.est-row strong { color: var(--c-ink); font-weight: 600; }

.est-result__note {
  font-size: 0.72rem;
  color: var(--c-ink-3);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

/* =============================================================================
   TECHNOLOGY / MECHANISMS
   ============================================================================= */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
}

.tech-card {
  background: var(--c-surface);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 2rem;
  align-items: start;
  transition: background var(--t-fast);
}
.tech-card:hover { background: var(--c-muted); }

.tech-card__img {
  width: 120px;
  height: 120px;
  background: var(--c-muted);
  border: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}
.tech-card__img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.5rem;
}

.tech-card__num {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--c-gold);
  margin-bottom: 0.5rem;
}
.tech-card__title {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 0.25rem;
}
.tech-card__sub {
  font-size: 0.75rem;
  color: var(--c-gold);
  font-weight: 500;
  margin-bottom: 0.75rem;
  letter-spacing: 0.04em;
}
.tech-card__desc {
  font-size: 0.875rem;
  color: var(--c-ink-2);
  line-height: 1.65;
  margin-bottom: 1rem;
}
.tech-card__specs {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.tech-card__specs li {
  font-size: 0.8rem;
  color: var(--c-ink-3);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.tech-card__specs li::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--c-gold);
  flex-shrink: 0;
}

/* =============================================================================
   GALLERY
   ============================================================================= */
.gallery-filter {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 2.5rem;
  overflow-x: auto;
  scrollbar-width: none;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}
.gallery-filter::-webkit-scrollbar { display: none; }

.gal-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-ink-2);
  cursor: pointer;
  white-space: nowrap;
  margin-bottom: -1px;
  transition: all var(--t-fast);
}
.gal-tab:hover { color: var(--c-ink); }
.gal-tab.active {
  color: var(--c-ink);
  border-bottom-color: var(--c-gold);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1280px;
  margin: 0 auto;
}

.gallery-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: all var(--t-fast);
  overflow: hidden;
}
.gallery-card:hover {
  border-color: var(--c-gold);
  transform: translateY(-3px);
  box-shadow: var(--sh-card);
}

.gallery-card__img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-muted);
}
.gallery-card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}
.gallery-card:hover .gallery-card__img-wrap img {
  transform: scale(1.06);
}

.gallery-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(18, 17, 15, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--t-fast);
}
.gallery-card:hover .gallery-card__overlay {
  opacity: 1;
}

.gallery-card__zoom-btn {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  background: rgba(18, 17, 15, 0.75);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 0.45rem 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.gallery-card__info {
  padding: 1.25rem 1.25rem 1.4rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.gallery-card__category {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 0.35rem;
}

.gallery-card__title {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--c-ink);
  margin-bottom: 0.35rem;
  line-height: 1.3;
}

.gallery-card__desc {
  font-size: 0.8rem;
  color: var(--c-ink-2);
  line-height: 1.55;
  margin-top: auto;
}

/* =============================================================================
   FINISHING
   ============================================================================= */
.finishing-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
}

.finishing-card {
  background: var(--c-surface);
  cursor: pointer;
  transition: background var(--t-fast);
}
.finishing-card:hover { background: var(--c-muted); }

.finishing-card__img {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.finishing-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}
.finishing-card:hover .finishing-card__img img {
  transform: scale(1.06);
}

.finishing-card__body {
  padding: 1.25rem;
}
.finishing-card__badge {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-gold);
  display: block;
  margin-bottom: 0.3rem;
}
.finishing-card h4 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 0.9rem;
  font-weight: 400;
  margin-bottom: 0.4rem;
  line-height: 1.3;
}
.finishing-card p {
  font-size: 0.78rem;
  color: var(--c-ink-2);
  line-height: 1.55;
}

/* =============================================================================
   WARRANTY STRIP
   ============================================================================= */
.warranty-strip {
  background: #1a1510;
  padding: 7rem 2rem;
}
.warranty-strip__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  max-width: 1280px;
  margin: 0 auto;
}
.warranty-strip__left h2 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 400;
  color: #fff;
  margin-bottom: 1.25rem;
  line-height: 1.2;
}
.warranty-strip__left h2 em { color: var(--c-gold); }
.warranty-strip__left p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  max-width: 400px;
  font-weight: 300;
}

.warranty-items { display: flex; flex-direction: column; gap: 0; }
.warranty-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  align-items: start;
}
.warranty-item__num {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 2rem;
  font-weight: 400;
  color: rgba(201,150,58,0.4);
  line-height: 1;
  padding-top: 0.1rem;
}
.warranty-item strong {
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  display: block;
  margin-bottom: 0.35rem;
}
.warranty-item p {
  font-size: 0.825rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
}

/* =============================================================================
   FAQ
   ============================================================================= */
.faq-list {
  border-top: 1px solid var(--c-border);
  max-width: 760px;
}

.faq-item {
  border-bottom: 1px solid var(--c-border);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.975rem;
  font-weight: 500;
  color: var(--c-ink);
  cursor: pointer;
  transition: color var(--t-fast);
}
.faq-question:hover { color: var(--c-gold); }

.faq-icon {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--c-ink-3);
  line-height: 1;
  flex-shrink: 0;
  transition: transform var(--t-med), color var(--t-fast);
  font-family: 'DM Serif Display', serif;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--c-gold);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding-bottom 0.4s ease;
}
.faq-item.active .faq-answer {
  max-height: 320px;
  padding-bottom: 1.5rem;
}
.faq-answer p {
  font-size: 0.9rem;
  color: var(--c-ink-2);
  line-height: 1.75;
}

/* =============================================================================
   FOOTER
   ============================================================================= */
.footer {
  background: var(--c-ink);
  color: rgba(255,255,255,0.5);
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  padding: 5rem 2rem;
  max-width: 1280px;
  margin: 0 auto;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer__logo {
  display: flex;
  align-items: baseline;
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 1.4rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1rem;
}

.footer__brand p {
  font-size: 0.875rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
  max-width: 320px;
}

.footer__certs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.footer__certs span {
  font-size: 0.7rem;
  padding: 0.25rem 0.65rem;
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.04em;
}

.footer__col h4 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 1.25rem;
}

.footer__col a, .footer__col p {
  display: block;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 0.6rem;
  transition: color var(--t-fast);
  line-height: 1.5;
}
.footer__col a:hover { color: #fff; }

.footer__address {
  font-size: 0.825rem !important;
  color: rgba(255,255,255,0.6) !important;
  line-height: 1.6 !important;
  margin-bottom: 0.75rem !important;
}

.footer__maps-link {
  display: inline-flex !important;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.75rem !important;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #fff !important;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  padding: 0.35rem 0.75rem;
  margin-bottom: 1rem !important;
  transition: all var(--t-fast);
}
.footer__maps-link:hover {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: #fff !important;
}
.footer__maps-link svg {
  color: var(--c-gold);
  transition: color var(--t-fast);
}
.footer__maps-link:hover svg {
  color: #fff;
}

.footer__wa {
  color: var(--c-gold) !important;
  font-weight: 500;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  max-width: 1280px;
  margin: 0 auto;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.25);
}

/* =============================================================================
   MODAL
   ============================================================================= */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.modal.open { display: flex; }

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(12, 11, 9, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal__box {
  position: relative;
  z-index: 2;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  width: 100%;
  max-width: 920px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--sh-modal);
}

.modal__close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: 1px solid var(--c-border);
  color: var(--c-ink-2);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--t-fast);
  z-index: 3;
}
.modal__close:hover { background: var(--c-ink); color: var(--c-bg); border-color: var(--c-ink); }
.modal__close svg { width: 18px; height: 18px; }

.modal__body { padding: 3rem; }

/* Modal inner layout */
.modal-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; margin-bottom: 2.5rem; }
.modal-img-primary {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--c-muted);
  border: 1px solid var(--c-border);
  margin-bottom: 1rem;
}
.modal-img-primary img { width: 100%; height: 100%; object-fit: cover; }
.modal-img-diagram {
  background: var(--c-muted);
  border: 1px solid var(--c-border);
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4/3;
}
.modal-img-diagram img { max-height: 100%; object-fit: contain; }

.modal-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-gold);
  display: block;
  margin-bottom: 0.5rem;
}

.modal-title {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 1.75rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
}

.modal-tagline { font-size: 0.9rem; color: var(--c-ink-2); margin-bottom: 1.5rem; }

.modal-features { list-style: none; margin-bottom: 1.5rem; display: flex; flex-direction: column; gap: 0.5rem; }
.modal-features li {
  font-size: 0.875rem;
  color: var(--c-ink-2);
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}
.modal-features li::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--c-gold);
  flex-shrink: 0;
  margin-top: 0.5rem;
}

.modal-applications { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.5rem; }
.modal-app-tag {
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--c-border);
  color: var(--c-ink-2);
}

/* Spec table */
.modal-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-ink-3);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--c-border);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.825rem;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--c-border);
}
.spec-table th {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--c-ink-3);
  background: var(--c-muted);
}
.spec-table td { color: var(--c-ink-2); }
.spec-table .spec-highlight { color: var(--c-gold); font-weight: 700; }

.modal-cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-border);
}

/* =============================================================================
   LIGHTBOX
   ============================================================================= */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: none;
  align-items: center;
  justify-content: center;
}
.lightbox.open { display: flex; }

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.92);
}

.lightbox__close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 2;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--t-fast);
}
.lightbox__close:hover { background: rgba(255,255,255,0.2); }
.lightbox__close svg { width: 18px; height: 18px; }

.lightbox__content {
  position: relative;
  z-index: 2;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.lightbox__content img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
}
.lightbox__caption { color: rgba(255,255,255,0.6); font-size: 0.875rem; text-align: center; }
.lightbox__caption strong { color: #fff; display: block; margin-bottom: 0.2rem; }

/* =============================================================================
   FLOATING
   ============================================================================= */
.float-actions {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 800;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
}

.float-top {
  width: 40px;
  height: 40px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  color: var(--c-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--t-fast);
}
.float-top.visible { opacity: 1; visibility: visible; }
.float-top:hover { background: var(--c-ink); color: var(--c-bg); border-color: var(--c-ink); }
.float-top svg { width: 18px; height: 18px; }

.float-wa {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: #25D366;
  color: #fff;
  padding: 0.65rem 1.1rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background var(--t-fast);
}
.float-wa:hover { background: #1da851; color: #fff; }
.float-wa svg { width: 18px; height: 18px; }

/* =============================================================================
   SCROLL REVEAL
   ============================================================================= */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-stagger.visible > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0ms; }
.reveal-stagger.visible > *:nth-child(2) { opacity: 1; transform: none; transition-delay: 80ms; }
.reveal-stagger.visible > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 160ms; }
.reveal-stagger.visible > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 240ms; }

/* =============================================================================
   TOAST NOTIFICATIONS & FORMS
   ============================================================================= */
.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  background: var(--c-surface);
  color: var(--c-ink);
  border: 1px solid var(--c-border);
  box-shadow: var(--sh-modal);
  padding: 0.9rem 1.4rem;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  pointer-events: auto;
  animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 90vw;
}

.toast--success { border-left: 4px solid #25D366; }
.toast--error { border-left: 4px solid #ef4444; }

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

/* Modal Form Specifics */
.modal-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.modal-form .form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.modal-form label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-ink-3);
  display: block;
  margin-bottom: 0.35rem;
}

.modal-form input,
.modal-form select,
.modal-form textarea {
  width: 100%;
  background: var(--c-muted);
  border: 1px solid var(--c-border);
  color: var(--c-ink);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  outline: none;
  font-family: inherit;
  transition: border-color var(--t-fast);
}

.modal-form input:focus,
.modal-form select:focus,
.modal-form textarea:focus {
  border-color: var(--c-gold);
}

.modal-form textarea {
  resize: vertical;
  min-height: 90px;
}

.btn-secondary-card {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: transparent;
  color: var(--c-ink);
  border: 1px solid var(--c-border);
  padding: 0.75rem 1.4rem;
  cursor: pointer;
  transition: all var(--t-fast);
  text-align: center;
}
.btn-secondary-card:hover {
  background: var(--c-muted);
  border-color: var(--c-ink);
}

/* =============================================================================
   RESPONSIVE
   ============================================================================= */
@media (max-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
  .tech-grid { grid-template-columns: 1fr; }
  .finishing-row { grid-template-columns: repeat(3, 1fr); }
  .estimator { grid-template-columns: 1fr; gap: 3rem; }
  .warranty-strip__inner { grid-template-columns: 1fr; gap: 3rem; }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .modal-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-110%);
    transition: transform var(--t-med);
    z-index: 800;
  }
  .nav__links.open { transform: translateY(0); }
  .hamburger { display: flex; }
  .btn-cta { display: none; }

  .hero__title { font-size: 2.5rem; }
  .hero__stats { flex-wrap: wrap; }
  .hero__stat { min-width: 50%; flex: none; }
  .hero__stat-divider { display: none; }
  .hero__switcher { display: none; }

  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .finishing-row { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }

  .products { grid-template-columns: 1fr; }
  .tech-card { grid-template-columns: 1fr; }
  .tech-card__img { width: 80px; height: 80px; }

  .footer__top { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 0.5rem; text-align: center; }

  .modal__body { padding: 1.5rem; }
  .section { padding: 4rem 1.25rem; }
  .section--dark, .section--muted { padding: 4rem 1.25rem; }
}

@media (max-width: 540px) {
  .gallery-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .finishing-row { grid-template-columns: 1fr; }
  .hero__stats { display: none; }
}