/* ================================================================
   SERTISSAGE A DOMICILE — Design System
   ================================================================ */

/* --- Custom Properties --- */
:root {
  --color-primary: #e74c3c;
  --color-primary-dark: #c0392b;
  --color-primary-darker: #a93226;
  --color-primary-light: #fef2f2;
  --color-text: #1f2937;
  --color-text-secondary: #4b5563;
  --color-text-light: #6b7280;
  --color-bg: #ffffff;
  --color-bg-alt: #f9fafb;
  --color-bg-dark: #1f2937;
  --color-bg-darker: #111827;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);
  --transition: 200ms ease;
  --transition-slow: 400ms ease;
  --container: 1100px;
  --nav-height: 64px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* --- Accessibility --- */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; top: -100%; left: 8px; background: var(--color-primary);
  color: #fff; padding: 8px 16px; border-radius: var(--radius-sm);
  z-index: 10001; font-weight: 600;
}
.skip-link:focus { top: 8px; color: #fff; }
*:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 2px; }

/* --- Layout --- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section--alt { background: var(--color-bg-alt); }
.section--dark { background: var(--color-bg-dark); color: #fff; }
.section--primary { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); color: #fff; }
.section__header { text-align: center; max-width: 700px; margin: 0 auto 48px; }
.section__title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
  color: var(--color-text);
}
.section--dark .section__title,
.section--primary .section__title { color: #fff; }
.section__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.section--dark .section__subtitle { color: rgba(255,255,255,0.7); }
.section__badge {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}
.section--dark .section__badge { background: rgba(231,76,60,0.2); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  min-height: 48px;
  touch-action: manipulation;
  text-decoration: none;
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(231,76,60,0.3);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(231,76,60,0.4);
}
.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
}
.btn--white {
  background: #fff;
  color: var(--color-primary);
}
.btn--white:hover {
  background: #f9fafb;
  color: var(--color-primary-dark);
  transform: translateY(-1px);
}
.btn--lg { padding: 16px 36px; font-size: 1.1rem; }
.btn--sm { padding: 10px 20px; font-size: 0.9rem; min-height: 40px; }
.btn--block { width: 100%; }

/* --- Site Banner --- */
.site-banner {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
  text-align: center;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.5;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 10000;
  display: none;
  min-height: 40px;
  align-items: center;
  justify-content: center;
}
.site-banner.active { display: flex; }
.site-banner__text { max-width: 800px; margin: 0 auto; }

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 9000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
  transition: all var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-md); }
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.navbar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
}
.navbar__brand:hover { color: var(--color-text); }
.navbar__brand img { height: 40px; width: auto; }
.navbar__brand span { color: var(--color-primary); }
.navbar__links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.navbar__link {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-decoration: none;
}
.navbar__link:hover { color: var(--color-primary); background: var(--color-primary-light); }
.navbar__cta {
  padding: 10px 22px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition);
  margin-left: 8px;
}
.navbar__cta:hover { background: var(--color-primary-dark); color: #fff; transform: translateY(-1px); }
.navbar__toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}
.navbar__toggle:hover { background: var(--color-bg-alt); }
.navbar__toggle svg { width: 24px; height: 24px; }

/* --- Hero --- */
.hero {
  padding: 120px 0 60px;
  background: linear-gradient(160deg, #fff 0%, var(--color-primary-light) 100%);
  overflow: hidden;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero__title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 16px;
}
.hero__title span { color: var(--color-primary); }
.hero__subtitle {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 500px;
}
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__image { text-align: center; }
.hero__image img { max-height: 340px; width: auto; margin: 0 auto; }

/* --- Steps --- */
.steps__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  counter-reset: step;
}
.step {
  text-align: center;
  padding: 32px 24px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-slow);
  position: relative;
}
.step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}
.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 800;
  border-radius: 50%;
  margin-bottom: 16px;
}
.step__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}
.step__text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- Cards --- */
.cards-grid { display: grid; gap: 24px; }
.cards-grid--3 { grid-template-columns: repeat(3, 1fr); }
.cards-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-slow);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(231,76,60,0.2);
}
.card__icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 1.5rem;
}
.card__icon svg { width: 28px; height: 28px; }
.card__title { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--color-text); }
.card__text { font-size: 0.95rem; color: var(--color-text-secondary); line-height: 1.7; }

/* --- Pricing Table --- */
.pricing-wrap {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}
.pricing-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.pricing-table thead {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
}
.pricing-table th {
  color: #fff;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 14px 16px;
  text-align: center;
  border: none;
}
.pricing-table td {
  padding: 14px 16px;
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}
.pricing-table tbody tr { transition: background var(--transition); }
.pricing-table tbody tr:hover { background: var(--color-primary-light); }
.pricing-table tbody tr:last-child td { border-bottom: none; }
.pricing-table td:first-child { font-weight: 600; color: var(--color-text); }
.pricing-note {
  text-align: center;
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--color-text-light);
}
.pricing-note strong { color: var(--color-text); }

/* --- News --- */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.news-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-slow);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.news-card__image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.news-card__body { padding: 20px 24px; }
.news-card__title { font-size: 1.05rem; font-weight: 700; color: var(--color-text); }

/* --- Video --- */
.video-wrap {
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  background: #000;
}
.video-wrap iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}

/* --- Contact Form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.contact-grid--full { grid-column: 1 / -1; }
.form-input, .form-textarea {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 1rem;
  transition: all var(--transition);
}
.form-input::placeholder, .form-textarea::placeholder { color: rgba(255,255,255,0.4); }
.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(255,255,255,0.12);
}
.form-textarea { min-height: 120px; resize: vertical; }
.contact-info {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  margin-bottom: 40px;
}
.contact-info__item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
}
.contact-info__item svg { flex-shrink: 0; opacity: 0.7; }
.contact-info__item a { color: rgba(255,255,255,0.9); }
.contact-info__item a:hover { color: #fff; }
.contact-success {
  display: none;
  background: rgba(39,174,96,0.15);
  border: 1px solid rgba(39,174,96,0.3);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  text-align: center;
  color: #fff;
  margin-bottom: 24px;
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-darker);
  border-top: 3px solid var(--color-primary);
  padding: 40px 0;
  text-align: center;
}
.footer__brand {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
}
.footer__brand span { color: var(--color-primary); }
.footer__copy { font-size: 0.85rem; color: rgba(255,255,255,0.4); }
.footer__links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 12px;
}
.footer__link { font-size: 0.85rem; color: rgba(255,255,255,0.5); }
.footer__link:hover { color: var(--color-primary); }

/* --- Public Calculator (v2) --- */
.calc-wrap {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  align-items: start;
}
.calc-products { display: flex; flex-direction: column; gap: 16px; }

/* Product card */
.calc-card {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 300ms ease, background 300ms ease, box-shadow 300ms ease;
  position: relative;
}
.calc-card:hover { border-color: rgba(231,76,60,0.25); }
.calc-card.active {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.calc-card__badge {
  position: absolute;
  top: -10px; right: -10px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  min-width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 999px;
  padding: 0 8px;
  box-shadow: 0 2px 8px rgba(231,76,60,0.3);
  opacity: 0;
  transform: scale(0);
  transition: all 250ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.calc-card.active .calc-card__badge { opacity: 1; transform: scale(1); }
.calc-card__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 16px;
}
.calc-card__name { font-size: 1.15rem; font-weight: 800; color: var(--color-text); }
.calc-card__specs { font-size: 0.85rem; color: var(--color-text-light); }

/* Segmented control */
.calc-seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  position: relative;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 14px;
}
.calc-seg__pill {
  position: absolute;
  top: 4px; bottom: 4px;
  left: 4px; right: 50%;
  background: var(--color-primary);
  border-radius: calc(var(--radius-md) - 4px);
  transition: left 300ms cubic-bezier(0.4, 0, 0.2, 1), right 300ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(231,76,60,0.25);
  pointer-events: none;
}
.calc-seg[data-pos="1"] .calc-seg__pill { left: 50%; right: 4px; }
.calc-seg__option {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 10px 8px;
  cursor: pointer;
  transition: color 200ms ease;
  border-radius: calc(var(--radius-md) - 4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  user-select: none;
  -webkit-user-select: none;
}
.calc-seg__option-label {
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.5px; line-height: 1;
}
.calc-seg__option-price { font-size: 0.95rem; font-weight: 800; line-height: 1.2; }
.calc-seg__option.active { color: #fff; }
.calc-seg__option:not(.active) .calc-seg__option-price { color: var(--color-primary); }
.calc-seg__option:not(.active):hover { background: rgba(231,76,60,0.04); }

/* Ouverture facile checkbox */
.calc-of {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
  padding: 10px 14px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  user-select: none; -webkit-user-select: none;
}
.calc-of:hover { border-color: var(--color-primary); background: rgba(231,76,60,0.03); }
.calc-of.disabled { opacity: 0.35; cursor: not-allowed; pointer-events: none; }
.calc-of__box {
  width: 22px; height: 22px;
  border: 2px solid var(--color-border);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
  background: var(--color-bg);
}
.calc-of__box.checked { background: var(--color-primary); border-color: var(--color-primary); }
.calc-of__box svg {
  width: 14px; height: 14px;
  stroke: #fff; stroke-width: 3; fill: none;
  opacity: 0; transition: opacity 150ms ease;
}
.calc-of__box.checked svg { opacity: 1; }
.calc-of__text { font-size: 0.88rem; font-weight: 500; color: var(--color-text-secondary); }
.calc-of__price { font-weight: 700; color: var(--color-primary); font-size: 0.88rem; margin-left: auto; }

/* Quantity controls */
.calc-qty { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.calc-qty__stepper {
  display: inline-flex; align-items: center;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: 999px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.calc-qty__stepper:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(231,76,60,0.1);
}
.calc-qty__btn {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: none;
  font-size: 1.3rem; font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  transition: background 150ms ease;
  flex-shrink: 0;
}
.calc-qty__btn:hover { background: var(--color-primary-light); }
.calc-qty__btn:first-child { border-radius: 999px 0 0 999px; }
.calc-qty__btn:last-child { border-radius: 0 999px 999px 0; }
.calc-qty__btn:disabled { color: #d1d5db; cursor: not-allowed; }
.calc-qty__btn:disabled:hover { background: transparent; }
.calc-qty__input {
  width: 56px; text-align: center;
  border: none; background: transparent;
  font-weight: 800; font-size: 1.15rem;
  color: var(--color-text); padding: 0;
  -moz-appearance: textfield; appearance: textfield;
}
.calc-qty__input::-webkit-outer-spin-button,
.calc-qty__input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.calc-qty__input:focus { outline: none; }
.calc-qty__fast { display: flex; gap: 6px; }
.calc-qty__fast-btn {
  padding: 8px 14px; font-size: 0.78rem; font-weight: 700;
  color: var(--color-primary); background: var(--color-primary-light);
  border: none; border-radius: 999px; cursor: pointer;
  transition: all var(--transition); white-space: nowrap;
}
.calc-qty__fast-btn:hover { background: var(--color-primary); color: #fff; transform: translateY(-1px); }
.calc-qty__fast-btn:active { transform: scale(0.95); }

/* Summary sidebar */
.calc-sidebar { position: sticky; top: 80px; }
.calc-summary {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}
.calc-summary__title { font-size: 1.15rem; font-weight: 800; margin-bottom: 20px; text-align: center; color: var(--color-text); }
.calc-summary__empty { text-align: center; color: var(--color-text-light); font-style: italic; font-size: 0.9rem; padding: 16px 0; }
.calc-summary__line {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0; font-size: 0.88rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-light);
}
.calc-summary__line:last-child { border-bottom: none; }
.calc-summary__line-info { flex: 1; min-width: 0; }
.calc-summary__line-detail { display: block; font-size: 0.72rem; color: var(--color-text-light); }
.calc-summary__line-price { font-weight: 700; color: var(--color-text); white-space: nowrap; margin-left: 12px; }
.calc-summary__total {
  border-top: 2px solid var(--color-primary);
  margin-top: 16px; padding-top: 20px; text-align: center;
}
.calc-summary__total-label {
  display: block; font-size: 0.78rem; font-weight: 700;
  color: var(--color-text-light); text-transform: uppercase;
  letter-spacing: 1px; margin-bottom: 4px;
}
.calc-summary__total-value { font-size: 2.2rem; font-weight: 800; color: var(--color-primary); display: inline-block; }
.calc-summary__note { text-align: center; font-size: 0.78rem; color: var(--color-text-light); margin-top: 8px; }
.calc-summary__count { text-align: center; font-size: 0.85rem; font-weight: 600; color: var(--color-text-secondary); margin-top: 4px; }
.calc-summary__reset {
  display: block; margin: 16px auto 0;
  padding: 8px 20px; font-size: 0.82rem; font-weight: 600;
  color: var(--color-text-light); background: none;
  border: 1px solid var(--color-border); border-radius: 999px;
  cursor: pointer; transition: all var(--transition);
}
.calc-summary__reset:hover { color: var(--color-primary); border-color: var(--color-primary); }

/* Mobile floating bottom bar */
.calc-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--color-bg);
  border-top: 2px solid var(--color-primary);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
  z-index: 5000;
  transform: translateY(100%);
  transition: transform 400ms cubic-bezier(0.4, 0, 0.2, 1);
}
.calc-bottom-bar.visible { transform: translateY(0); }
.calc-bottom-bar__inner {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px; gap: 12px;
}
.calc-bottom-bar__text { flex: 1; }
.calc-bottom-bar__count { display: block; font-size: 0.82rem; font-weight: 600; color: var(--color-text-secondary); }
.calc-bottom-bar__price { font-size: 1.2rem; font-weight: 800; color: var(--color-primary); }
.calc-bottom-bar__cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--color-primary); color: #fff;
  padding: 12px 20px; border-radius: var(--radius-md);
  font-weight: 700; font-size: 0.9rem;
  text-decoration: none; white-space: nowrap;
  box-shadow: 0 2px 8px rgba(231,76,60,0.3);
}
.calc-bottom-bar__cta:hover { background: var(--color-primary-dark); color: #fff; }

/* Calculator animations */
@keyframes calc-bump {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}
.calc-bump { animation: calc-bump 250ms ease; }

@media (max-width: 768px) {
  .calc-wrap { grid-template-columns: 1fr; gap: 16px; }
  .calc-sidebar { position: static; display: none; }
  .calc-bottom-bar { display: block; }
  .calc-card { padding: 18px; }
  .calc-card__header { flex-direction: column; gap: 2px; }
  .calc-qty__btn { width: 44px; height: 44px; }
  .calc-seg__option { padding: 8px 6px; }
  .calc-seg__option-label { font-size: 0.68rem; }
  .calc-seg__option-price { font-size: 0.88rem; }
  body.calc-has-items { padding-bottom: 72px; }
}
@media (min-width: 769px) {
  .calc-bottom-bar { display: none !important; }
}

/* --- CTA Section --- */
.cta-section {
  text-align: center;
  padding: 64px 0;
}
.cta-section .section__title { color: #fff; margin-bottom: 12px; }
.cta-section .section__subtitle { color: rgba(255,255,255,0.85); margin-bottom: 32px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* --- Blog Article Styles --- */
.article-header {
  padding: 100px 0 40px;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}
.article-header__title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.article-header__meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--color-text-light);
}
.article-header__meta time { font-weight: 500; }
.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 24px;
}
.breadcrumb a { color: var(--color-primary); }
.breadcrumb__sep { color: var(--color-border); }

.article-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 0 80px;
}
.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--color-text);
}
.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--color-text);
}
.article-content p { margin-bottom: 16px; color: var(--color-text-secondary); line-height: 1.8; }
.article-content ul, .article-content ol {
  margin: 16px 0;
  padding-left: 24px;
  color: var(--color-text-secondary);
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 8px; line-height: 1.7; }
.article-content blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--color-primary);
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}
.article-content img {
  border-radius: var(--radius-md);
  margin: 24px 0;
  box-shadow: var(--shadow-md);
}
.article-content figure { margin: 24px 0; }
.article-content figcaption {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 8px;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.9rem;
}
.article-content th, .article-content td {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
}
.article-content th {
  background: var(--color-bg-alt);
  font-weight: 600;
  color: var(--color-text);
}
.article-content code {
  background: var(--color-bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--color-primary-dark);
}
.article-content strong { color: var(--color-text); font-weight: 600; }

/* --- Configurator (standalone page) --- */
.config-page { padding: 20px 16px; min-height: 100vh; background: var(--color-bg-alt); }
.config-container { max-width: 540px; margin: 0 auto; }
.config-header {
  text-align: center;
  background: var(--color-bg);
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.config-header__logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 4px;
}
.config-header__logo span { color: var(--color-primary); }
.config-header__title { color: var(--color-text-secondary); font-size: 1rem; }
.config-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 24px 20px;
  margin-bottom: 20px;
}
.config-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 20px;
  color: var(--color-text);
}
.product-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border-light);
}
.product-item:last-child { border-bottom: none; }
.product-item__name { font-size: 1rem; font-weight: 700; color: var(--color-text); margin-bottom: 2px; }
.product-item__details { font-size: 0.85rem; color: var(--color-text-light); margin-bottom: 14px; }
.toggle-group {
  display: flex;
  gap: 6px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 5px;
  margin-bottom: 14px;
}
.toggle-btn {
  flex: 1;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 6px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  min-height: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.toggle-btn:hover { border-color: var(--color-primary); }
.toggle-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(231,76,60,0.3);
}
.toggle-btn__label { font-size: 0.75rem; font-weight: 700; line-height: 1.3; }
.toggle-btn__price { font-size: 0.85rem; font-weight: 700; color: var(--color-primary); }
.toggle-btn.active .toggle-btn__label,
.toggle-btn.active .toggle-btn__price { color: #fff; }
.qty-row { display: flex; align-items: center; gap: 12px; }
.qty-btn {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}
.qty-btn:hover { background: var(--color-primary-dark); transform: scale(1.05); }
.qty-btn:disabled { background: #d1d5db; cursor: not-allowed; transform: none; }
.qty-input {
  width: 70px;
  text-align: center;
  padding: 8px 12px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
}
.qty-input:focus { outline: none; border-color: var(--color-primary); }
.summary {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 20px;
  border-left: 4px solid var(--color-primary);
  margin-bottom: 20px;
}
.summary__title { font-size: 1.1rem; font-weight: 700; text-align: center; margin-bottom: 16px; }
.summary__empty { text-align: center; color: var(--color-text-light); font-style: italic; padding: 10px 0; }
.summary__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border-light);
}
.summary__item:last-child { border-bottom: none; }
.summary__item-name { font-weight: 600; font-size: 0.9rem; color: var(--color-text); }
.summary__item-qty { font-weight: 700; color: var(--color-primary); }
.summary__total {
  border-top: 2px solid var(--color-primary);
  padding-top: 16px;
  margin-top: 8px;
  text-align: center;
}
.summary__total-label { font-size: 1rem; font-weight: 700; color: var(--color-text); }
.summary__total-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  background: var(--color-bg);
  padding: 10px 24px;
  border-radius: var(--radius-md);
  border: 3px solid var(--color-primary);
  display: inline-block;
  margin-top: 8px;
}
.config-actions { display: flex; gap: 12px; }
.config-actions .btn { flex: 1; }
.config-footer {
  text-align: center;
  padding: 20px;
  font-size: 0.9rem;
}
.config-footer a { color: var(--color-primary); font-weight: 500; }

/* Banner manager (admin) */
.banner-manager__toggle { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.banner-manager__label { font-weight: 600; color: var(--color-text); }
.switch { position: relative; display: inline-block; width: 52px; height: 28px; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch__slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: #d1d5db;
  border-radius: 28px;
  transition: var(--transition);
}
.switch__slider::before {
  content: '';
  position: absolute;
  height: 22px; width: 22px;
  left: 3px; bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: var(--transition);
}
.switch input:checked + .switch__slider { background: var(--color-primary); }
.switch input:checked + .switch__slider::before { transform: translateX(24px); }
.banner-textarea {
  width: 100%;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 0.95rem;
  resize: vertical;
  min-height: 80px;
  color: var(--color-text);
  transition: border-color var(--transition);
  font-family: var(--font);
}
.banner-textarea:focus { outline: none; border-color: var(--color-primary); }
.banner-preview {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
  text-align: center;
  padding: 12px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  margin: 12px 0;
  display: none;
}
.banner-preview.active { display: block; }
.banner-preview__label {
  font-size: 0.7rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin: 12px 0 4px;
  display: none;
}
.banner-preview__label.active { display: block; }
.btn-save {
  width: 100%;
  padding: 14px 20px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 16px;
  min-height: 48px;
}
.btn-save:hover { background: var(--color-primary-dark); }
.btn-save:disabled { background: #d1d5db; cursor: not-allowed; }
.save-feedback { text-align: center; margin-top: 8px; font-weight: 600; font-size: 0.9rem; min-height: 20px; }
.save-feedback--success { color: #059669; }
.save-feedback--error { color: var(--color-primary); }

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { opacity: 0; transform: translateY(20px); transition: all 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

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

@media (max-width: 768px) {
  :root { --nav-height: 56px; }

  .section { padding: 56px 0; }
  .section__header { margin-bottom: 36px; }
  .section__title { font-size: 1.65rem; }
  .section__subtitle { font-size: 1rem; }

  .navbar__links { display: none; }
  .navbar__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    gap: 4px;
  }
  .navbar__link { padding: 12px 16px; font-size: 1rem; }
  .navbar__cta { margin: 8px 0 0; text-align: center; display: block; }
  .navbar__toggle { display: flex; }

  .hero { padding: 88px 0 48px; }
  .hero__inner { grid-template-columns: 1fr; text-align: center; gap: 32px; }
  .hero__title { font-size: 2rem; }
  .hero__subtitle { margin: 0 auto 28px; }
  .hero__actions { justify-content: center; }
  .hero__image img { max-height: 240px; }

  .steps__grid { grid-template-columns: 1fr; gap: 16px; }
  .cards-grid--3, .cards-grid--2 { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; gap: 20px; }
  .contact-grid { grid-template-columns: 1fr; }
  .cta-actions { flex-direction: column; align-items: center; }

  .config-actions { flex-direction: column; }
}

@media (max-width: 480px) {
  .hero__title { font-size: 1.65rem; }
  .hero__image img { max-height: 200px; }
  .section__title { font-size: 1.45rem; }
  .btn--lg { padding: 14px 28px; font-size: 1rem; }
  .pricing-table { font-size: 0.8rem; }
  .pricing-table th, .pricing-table td { padding: 10px 8px; }
  .site-banner { font-size: 0.8rem; padding: 8px 16px; }
}

/* Touch devices */
@media (hover: none) {
  .card:hover, .step:hover, .news-card:hover { transform: none; }
  .card:active, .step:active, .news-card:active { transform: translateY(-2px); }
}