/* ================================================================
   БЫТОВКА.БЕЛ — Главный файл стилей
   Корпоративный/строительный дизайн
   ================================================================ */

/* ── 1. CSS-переменные (тёмная тема с разнообразием) ── */
:root {
  --clr-primary: #0D0D0D;
  --clr-primary-light: #1A1A1A;
  --clr-primary-dark: #000000;
  --clr-accent: #F2A900;
  --clr-accent-light: #FFD04D;
  --clr-accent-dark: #CC8E00;
  --clr-bg: #0F1117;
  --clr-bg-alt: #161927;
  --clr-surface: #1C1F2E;
  --clr-surface-hover: #252A3A;
  --clr-text: #E8E8ED;
  --clr-text-sec: #9CA3AF;
  --clr-border: #2A2D3E;
  --clr-success: #4CAF50;
  --clr-error: #E53935;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --max-w: 1200px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', 'Montserrat', system-ui, -apple-system, sans-serif;
}

/* ── 2. CSS-сброс и база ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.no-scroll {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

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

ul,
ol {
  list-style: none;
}

/* ── 3. Типографика ── */
h1, h2, h3, h4, h5, h6 {
  color: var(--clr-text);
  line-height: 1.2;
  font-weight: 700;
}

.accent {
  color: var(--clr-accent);
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.5px;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: 16px;
}

h3 {
  font-size: clamp(1.2rem, 3vw, 1.5rem);
}

h4 {
  font-size: 1.125rem;
}

h5 {
  font-size: 1rem;
}

h6 {
  font-size: 0.875rem;
}

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

/* ── 4. Утилиты ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  color: var(--clr-text);
  text-align: center;
  text-transform: uppercase;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-light));
  margin: 12px auto 0;
  border-radius: 2px;
}

.section-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.125rem);
  color: var(--clr-text-sec);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.6;
}

/* ── 5. Кнопки ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--clr-accent);
  color: #0D0D0D;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--clr-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(242, 169, 0, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--clr-surface);
  color: var(--clr-text);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-outline:hover {
  background: var(--clr-surface-hover);
  color: var(--clr-text);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 36px;
  background: var(--clr-accent);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  width: 100%;
}

.btn-submit:hover {
  background: var(--clr-accent-dark);
  box-shadow: 0 4px 16px rgba(247, 167, 33, 0.35);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ── 6. Карточки ── */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(242, 169, 0, 0.08);
  border-color: rgba(242, 169, 0, 0.5);
}

/* Gradient border accent on product cards */
.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-light), var(--clr-accent));
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 1;
}

.product-card:hover::before {
  opacity: 1;
}

/* ── 7. Формы ── */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="url"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  background: var(--clr-surface);
  color: var(--clr-text);
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
input[type="url"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(247, 167, 33, 0.2);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: var(--clr-text);
  font-size: 0.95rem;
}

.form-group {
  margin-bottom: 20px;
}

/* Validation */
.input-error {
  border-color: var(--clr-error) !important;
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.15) !important;
}

.error-message {
  color: var(--clr-error);
  font-size: 0.85rem;
  margin-top: 4px;
  display: none;
}

.input-error ~ .error-message {
  display: block;
}

/* ── 8. Scroll-reveal анимации ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}

/* ── 9. Модальное окно ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal {
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  padding: 40px;
  max-width: 500px;
  width: 90%;
  position: relative;
  transform: scale(0.95);
  transition: transform var(--transition);
  box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--clr-text-sec);
  line-height: 1;
  transition: color var(--transition);
}

.modal-close:hover {
  color: var(--clr-text);
}

.modal h2 {
  margin-bottom: 20px;
}

/* ── 10. Toast-уведомления ── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  color: #FFFFFF;
  font-weight: 500;
  font-size: 0.95rem;
  z-index: 3000;
  transform: translateX(120%);
  transition: transform 0.4s ease;
  box-shadow: var(--shadow-md);
  max-width: 360px;
}

.toast.show {
  transform: translateX(0);
}

.toast-success {
  background: var(--clr-success);
}

.toast-error {
  background: var(--clr-error);
}

/* ================================================================
   11. HEADER — одна строка: лого | меню | телефон + кнопка
   ================================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 17, 23, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  transition: box-shadow var(--transition);
}

.header-nav {
  padding: 0;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 20px;
}

.logo {
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--clr-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-accent {
  color: var(--clr-accent);
}

.logo:hover {
  color: var(--clr-accent);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 12px;
  align-items: center;
  flex: 1;
  justify-content: center;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.nav-item a {
  color: var(--clr-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  transition: color var(--transition);
  position: relative;
  padding: 4px 0;
  white-space: nowrap;
}

.nav-item a:hover {
  color: var(--clr-accent);
}

.nav-item a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-accent);
  border-radius: 1px;
  transition: width var(--transition);
}

.nav-item a:hover::after {
  width: 100%;
}

/* Dropdown */
.nav-item.has-dropdown {
  position: relative;
}

.nav-item.has-dropdown > a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-sm);
  padding: 8px 0;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  z-index: 1000;
}

.nav-item.has-dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li a {
  display: block;
  padding: 8px 20px;
  white-space: nowrap;
  font-size: 14px;
}

.dropdown li a::after {
  display: none;
}

.dropdown li a:hover {
  background: var(--clr-bg);
  color: var(--clr-accent);
}

/* Header scroll state */
.header.scrolled {
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Burger */
.burger {
  display: none;
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--clr-text);
  padding: 4px;
  line-height: 1;
}

/* Header phone */
.header-phone {
  font-weight: 600;
  font-size: 14px;
  color: var(--clr-text);
  white-space: nowrap;
}

.header-phone:hover {
  color: var(--clr-accent);
}

/* ================================================================
   12. FOOTER
   ================================================================ */
.footer {
  background: linear-gradient(180deg, var(--clr-bg-alt) 0%, #0A0C12 100%);
  color: #FFFFFF;
  padding: 60px 0 20px;
  border-top: 1px solid var(--clr-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-col h3 {
  margin-bottom: 16px;
  font-size: 18px;
  color: #FFFFFF;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  display: block;
  margin-bottom: 8px;
  transition: color var(--transition);
  font-size: 15px;
}

.footer-col a:hover {
  color: #FFFFFF;
}

.footer-col p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  line-height: 1.6;
}

.footer-bottom {
  text-align: center;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
}

/* ================================================================
   13. HERO-секция (Главная) — split layout
   ================================================================ */
.hero-split {
  padding: 60px 0 80px;
  background: var(--clr-primary);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: var(--clr-accent);
  color: #000;
  border: none;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 28px;
  letter-spacing: 0.3px;
}

.hero-text h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  margin-bottom: 24px;
  line-height: 1.1;
  font-weight: 700;
  text-transform: uppercase;
}

.hero-text p {
  font-size: 1.05rem;
  margin-bottom: 36px;
  color: var(--clr-text-sec);
  max-width: 520px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-md);
}

.hero-image::before,
.hero-image::after {
  display: none;
}

/* Legacy hero (for inner pages if used) */
.hero {
  min-height: 60vh;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  position: relative;
  color: #FFFFFF;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 17, 23, 0.85) 0%, rgba(22, 25, 39, 0.7) 50%, rgba(15, 17, 23, 0.85) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
  padding: 40px 20px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 20px;
  color: #FFFFFF;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.9);
}

/* ================================================================
   14. ПРЕИМУЩЕСТВА
   ================================================================ */
.advantages {
  padding: 80px 0;
  background: var(--clr-bg-alt);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.advantage-card {
  text-align: center;
  padding: 30px;
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
  border-top: 3px solid var(--clr-accent);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(242, 169, 0, 0.12), 0 0 20px rgba(242, 169, 0, 0.05);
  border-color: rgba(242, 169, 0, 0.4);
}

.advantage-card svg {
  filter: drop-shadow(0 0 8px rgba(242, 169, 0, 0.3));
}

.advantage-card svg,
.advantage-card img {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
}

.advantage-card svg {
  fill: var(--clr-accent);
}

.advantage-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.advantage-card p {
  font-size: 0.95rem;
  color: var(--clr-text-sec);
}

/* ================================================================
   15. КАТАЛОГ / ПРОДУКТЫ (Главная)
   ================================================================ */
.catalog-preview,
.sendvich-preview {
  padding: 80px 0;
  background: var(--clr-bg-alt);
  content-visibility: auto;
  contain-intrinsic-size: auto 600px;
}

/* ── FAQ Section ── */
.faq-section {
  padding: 80px 0;
  background: var(--clr-bg-alt);
}

.faq-list {
  max-width: 800px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--clr-accent);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--clr-text);
  font-family: var(--font);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--clr-accent);
}

.faq-toggle {
  flex-shrink: 0;
  font-size: 1.4rem;
  font-weight: 300;
  color: #fff;
  transition: transform 0.3s ease;
}
.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 24px 20px;
  color: var(--clr-text-sec);
  line-height: 1.7;
  font-size: 0.95rem;
}

.blog-preview {
  padding: 80px 0;
  background: var(--clr-bg);
  content-visibility: auto;
  contain-intrinsic-size: auto 600px;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  color: var(--clr-text);
  display: flex;
  flex-direction: column;
}

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

.product-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  content-visibility: auto;
}

.product-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.product-card .price {
  color: var(--clr-accent);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
  margin-top: auto;
  text-shadow: 0 0 20px rgba(242, 169, 0, 0.3);
}

.product-card .btn-primary {
  background: transparent;
  color: var(--clr-accent);
  border: 2px solid var(--clr-accent);
}

.product-card .btn-primary:hover {
  background: var(--clr-accent);
  color: #0D0D0D;
}

/* ================================================================
   15a. INTRO TEXT
   ================================================================ */
.intro-text {
  padding: 60px 0;
  background: var(--clr-bg);
}

.intro-text p {
  max-width: 900px;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--clr-text-sec);
  text-align: center;
}

/* ================================================================
   15b. ПРЕИМУЩЕСТВА / МОДЕЛИ
   ================================================================ */
.advantages-section,
.models-section {
  padding: 60px 0;
  background: var(--clr-bg);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  background: var(--clr-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 32px 24px;
}

.advantage-card h3 {
  color: var(--clr-accent);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.advantage-card p {
  color: var(--clr-text-sec);
  font-size: 0.95rem;
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .advantages-grid {
    grid-template-columns: 1fr;
  }
}

.models-section p {
  max-width: 900px;
  margin: 0 auto 16px;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--clr-text-sec);
}

.models-list {
  max-width: 900px;
  margin: 20px auto 0;
  list-style: disc;
  padding-left: 24px;
}

.models-list li {
  list-style: disc;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--clr-text-sec);
  margin-bottom: 8px;
}

/* ================================================================
   15b2. INFO COLUMNS (Где востребована / Доступные модели)
   ================================================================ */
.info-columns {
  padding: 80px 0;
  background: var(--clr-card);
}
.info-columns-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.info-col h2 {
  font-family: var(--ff-heading);
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: #fff;
}
.info-col p {
  color: var(--clr-text-muted);
  line-height: 1.7;
  font-size: 1rem;
}
.info-col ul {
  list-style: disc;
  padding-left: 20px;
}
.info-col ul li {
  color: var(--clr-text-muted);
  line-height: 1.7;
  font-size: 1rem;
  margin-bottom: 12px;
}
@media (max-width: 768px) {
  .info-columns-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* ================================================================
   15b3. CTA PROMO (Подарки)
   ================================================================ */
.cta-promo {
  padding: 80px 0;
  background: var(--clr-bg);
}
.cta-promo-box {
  background: linear-gradient(135deg, rgba(42,42,42,0.9) 0%, rgba(26,26,26,0.95) 100%);
  border: 1px solid var(--clr-accent);
  border-radius: 16px;
  padding: 60px 40px;
  text-align: center;
}
.cta-promo-box h2 {
  font-family: var(--ff-heading);
  font-size: 2.2rem;
  color: #fff;
  margin-bottom: 30px;
  line-height: 1.3;
}
.cta-promo-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}
.cta-badge {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(242,169,0,0.4);
  border-radius: 30px;
  padding: 12px 28px;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
}
.cta-promo .btn-primary {
  margin-top: 20px;
  font-size: 1.1rem;
  padding: 16px 40px;
}
@media (max-width: 768px) {
  .cta-promo-box {
    padding: 40px 20px;
  }
  .cta-promo-box h2 {
    font-size: 1.5rem;
  }
  .cta-badge {
    font-size: 0.9rem;
    padding: 10px 20px;
  }
}

/* ================================================================
   15b4. COMPETITORS COMPARISON
   ================================================================ */
.competitors {
  padding: 80px 0;
  background: var(--clr-bg);
}
.competitors-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 40px;
}
.competitors-card {
  border-radius: 12px;
  padding: 40px;
}
.competitors-card h3 {
  font-family: var(--ff-heading);
  font-size: 1.4rem;
  color: #fff;
  text-align: center;
  margin-bottom: 24px;
}
.competitors-card ul {
  list-style: none;
  padding: 0;
}
.competitors-card ul li {
  color: #fff;
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.competitors-them {
  background: linear-gradient(180deg, rgba(180,40,40,0.15) 0%, rgba(26,26,26,0.6) 100%);
  border: 1px solid rgba(255,255,255,0.12);
}
.competitors-us {
  background: linear-gradient(180deg, rgba(42,42,42,0.8) 0%, rgba(26,26,26,0.9) 100%);
  border: 1px solid var(--clr-accent);
}
.icon-x {
  color: #E53935;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.icon-check {
  flex-shrink: 0;
}
@media (max-width: 768px) {
  .competitors-grid {
    grid-template-columns: 1fr;
  }
  .competitors-card {
    padding: 30px 20px;
  }
}

/* ================================================================
   15b5. FINISHING (Внутренняя отделка)
   ================================================================ */
.finishing {
  padding: 80px 0;
  background: var(--clr-bg);
}
.finishing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.finishing-left h2 {
  font-family: var(--ff-heading);
  font-size: 2.2rem;
  color: #fff;
  margin-bottom: 30px;
  line-height: 1.2;
}
.finishing-tabs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.finishing-tab {
  background: rgba(255,255,255,0.08);
  border: none;
  border-radius: 30px;
  padding: 10px 24px;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s;
}
.finishing-tab:hover {
  background: rgba(255,255,255,0.15);
}
.finishing-tab.active {
  background: #fff;
  color: #0D0D0D;
}
.finishing-right {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 16px;
  padding: 36px;
}
.finishing-content {
  display: none;
}
.finishing-content.active {
  display: block;
}
.finishing-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}
.finishing-content ul {
  list-style: none;
  padding: 0;
}
.finishing-content ul li {
  color: var(--clr-text-muted);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 14px;
}
.finishing-desc {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
@media (max-width: 768px) {
  .finishing-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .finishing-left h2 {
    font-size: 1.6rem;
  }
  .finishing-right {
    padding: 24px;
  }
}

/* ================================================================
   15c. CASE STUDIES (КЕЙСЫ)
   ================================================================ */
.case-studies {
  padding: 80px 0;
  background: var(--clr-bg);
}
.case-studies .section-title {
  text-transform: uppercase;
  letter-spacing: 1px;
}
.case-box {
  background: var(--clr-card);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 40px;
  margin-top: 40px;
}
.case-box-title {
  color: var(--clr-accent);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.case-cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}
.case-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 24px;
}
.case-card p {
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}
.case-card strong {
  color: #fff;
}
.case-quote {
  color: var(--clr-text-muted);
  font-style: italic;
  text-align: center;
  font-size: 1rem;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin: 0;
}
@media (max-width: 768px) {
  .case-cards {
    grid-template-columns: 1fr;
  }
  .case-box {
    padding: 24px;
  }
}

/* ================================================================
   15d. ОТЛИЧИЯ ОТ КОНКУРЕНТОВ
   ================================================================ */
.competitors {
  padding: 80px 0;
  background: var(--clr-bg-alt);
}

.compare-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 900px;
  margin: 40px auto 0;
}

.compare-col h3 {
  text-align: center;
  font-size: 1.2rem;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--clr-border);
}

.compare-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  font-size: 1rem;
}

.compare-item.negative .compare-icon {
  color: #E53935;
  font-size: 12px;
}

.compare-item.positive .compare-icon {
  color: #4CAF50;
  font-size: 12px;
}

/* ================================================================
   15e. О КОМПАНИИ + ЗАКАЗ В 4 ЭТАПА
   ================================================================ */
.about-order {
  padding: 80px 0;
  background: var(--clr-bg);
}
.about-order-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.about-col h2 {
  font-family: var(--ff-heading);
  font-size: 2.2rem;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.2;
}
.about-desc {
  color: var(--clr-text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 30px;
}
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.about-stat-card {
  background: var(--clr-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 24px;
}
.about-stat-num {
  display: block;
  font-family: var(--ff-heading);
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
}
.about-stat-label {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
}
.order-box {
  background: var(--clr-card);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 36px;
}
.order-box h3 {
  font-family: var(--ff-heading);
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 28px;
}
.order-step {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: rgba(255,255,255,0.04);
  border-radius: 40px;
  margin-bottom: 12px;
}
.order-step-icon {
  font-size: 1rem;
  flex-shrink: 0;
}
.order-step-num {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  background: var(--clr-accent);
  color: #0D0D0D;
  font-weight: 800;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.order-step-text {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: baseline;
}
.order-step-text strong {
  color: #fff;
  font-size: 1rem;
}
.order-step-text span {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
}
@media (max-width: 768px) {
  .about-order-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-col h2 {
    font-size: 1.6rem;
  }
  .order-box {
    padding: 24px;
  }
}

/* ================================================================
   15e2. ГАРАНТИИ
   ================================================================ */
.guarantees {
  padding: 80px 0;
  background: var(--clr-bg);
}
.guarantees .section-title {
  text-transform: uppercase;
  letter-spacing: 1px;
}
.guarantees .section-subtitle {
  max-width: 700px;
  margin: 0 auto 36px;
}
.guarantees-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}
.guarantee-badge {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(242,169,0,0.4);
  border-radius: 30px;
  padding: 16px 32px;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
}
@media (max-width: 768px) {
  .guarantees-badges {
    flex-direction: column;
    align-items: center;
  }
}

/* ================================================================
   15f. КРУПНЫЕ КЛИЕНТЫ
   ================================================================ */
.big-clients {
  padding: 80px 0;
  background: var(--clr-bg-alt);
}

.clients-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 60px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.client-logo {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.client-logo img {
  max-height: 120px;
  max-width: 200px;
  object-fit: contain;
}

/* ================================================================
   15g. КАЧЕСТВЕННАЯ ПРОДУКЦИЯ
   ================================================================ */
.quality-section {
  padding: 60px 0;
  background: linear-gradient(rgba(0,0,0,0.75), rgba(0,0,0,0.75)),
    url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?w=1200&q=60') center/cover no-repeat;
}

.quality-form {
  margin-top: 32px;
  text-align: center;
}

.quality-form p {
  color: var(--clr-text-sec);
  margin-bottom: 20px;
  font-size: 1.1rem;
}

/* ================================================================
   15h. 4 ЭТАПА ЗАКАЗА
   ================================================================ */
.order-steps {
  padding: 80px 0;
  background: var(--clr-bg-alt);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.step-card {
  padding: 32px 24px;
}

.step-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--clr-text);
  font-family: 'Montserrat', sans-serif;
  margin-bottom: 16px;
  font-style: italic;
}

.step-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.step-card p {
  color: var(--clr-text-sec);
  font-size: 0.95rem;
  line-height: 1.6;
}

.step-card a {
  color: var(--clr-accent);
  font-weight: 600;
}

/* Форма заявки в секции "4 этапа" */
.order-steps-form {
  margin-top: 48px;
  text-align: center;
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: 12px;
  padding: 40px 32px;
}

.order-steps-form h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--clr-text);
}

.order-steps-form p {
  color: var(--clr-text-sec);
  margin-bottom: 24px;
}

.inline-form {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  max-width: 500px;
  margin: 0 auto;
}

.inline-form input[type="tel"] {
  flex: 1;
  min-width: 220px;
}

.inline-form .btn-primary {
  white-space: nowrap;
}

/* ================================================================
   16. ФОРМА ОБРАТНОЙ СВЯЗИ (Главная)
   ================================================================ */
.contact-final {
  padding: 0;
  background: var(--clr-bg);
}
.contact-final-box {
  background: var(--clr-card);
  border-top: 3px solid var(--clr-accent);
  border-radius: 0 0 16px 16px;
  padding: 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.contact-final-left h2 {
  font-family: var(--ff-heading);
  font-size: 2.2rem;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.contact-final-left > p {
  color: var(--clr-text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
}
.contact-final-info {
  background: rgba(0,0,0,0.3);
  border-radius: 12px;
  padding: 20px 24px;
}
.contact-final-info p {
  color: #fff;
  margin: 0 0 6px;
  font-size: 1rem;
}
.contact-final-info p:last-child {
  margin-bottom: 0;
}
.contact-final-right form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-final-right input[type="text"],
.contact-final-right input[type="tel"] {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
  padding: 16px 20px;
  color: #fff;
  font-size: 1rem;
  width: 100%;
  box-sizing: border-box;
}
.contact-final-right input::placeholder {
  color: rgba(255,255,255,0.4);
}
.form-consent {
  color: var(--clr-text-muted);
  font-size: 0.8rem;
  text-align: center;
  margin: 0;
}
@media (max-width: 768px) {
  .contact-final-box {
    grid-template-columns: 1fr;
    padding: 40px 20px;
    gap: 30px;
  }
  .contact-final-left h2 {
    font-size: 1.6rem;
  }
}

/* ================================================================
   17. СТРАНИЦЫ ПРОДУКТОВ / КАТАЛОГА
   ================================================================ */
.breadcrumb {
  padding: 16px 0;
  font-size: 14px;
  color: var(--clr-text-sec);
}

.breadcrumb a {
  color: var(--clr-text-sec);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--clr-accent);
}

.breadcrumb span {
  margin: 0 8px;
}

.category-hero {
  padding: 60px 0;
  background: linear-gradient(135deg, var(--clr-bg-alt) 0%, var(--clr-bg) 100%);
  border-bottom: 1px solid var(--clr-border);
}

.page-hero {
  padding: 40px 0;
  background: linear-gradient(135deg, var(--clr-bg-alt) 0%, var(--clr-bg) 100%);
  border-bottom: 1px solid var(--clr-border);
}

.product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 40px 0;
}

.product-image img {
  width: 100%;
  border-radius: var(--radius-md);
}

.product-info h1 {
  margin-bottom: 16px;
}

.product-info .price {
  font-size: 1.5rem;
  color: var(--clr-accent);
  font-weight: 700;
  margin-bottom: 24px;
  text-shadow: 0 0 24px rgba(242, 169, 0, 0.25);
}

.product-info .price::before {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--clr-accent);
  margin-bottom: 12px;
  opacity: 0.5;
}

.product-info .description {
  margin-bottom: 24px;
  line-height: 1.7;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--clr-border);
  font-size: 0.95rem;
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-row span:first-child {
  color: var(--clr-text-sec);
}

.spec-row span:last-child {
  font-weight: 600;
}

.product-actions {
  display: flex;
  gap: 16px;
  margin-top: 24px;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table th,
.specs-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--clr-border);
}

.specs-table th {
  font-weight: 600;
  color: var(--clr-accent);
  background: var(--clr-surface);
}

.specs-table tr:hover {
  background: var(--clr-surface);
}

/* ================================================================
   18. БЛОГ
   ================================================================ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.blog-card {
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  text-decoration: none;
  color: var(--clr-text);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.blog-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.blog-card h3 {
  padding: 16px;
  font-size: 1rem;
}

.blog-card .blog-date {
  padding: 0 16px 16px;
  font-size: 0.85rem;
  color: var(--clr-text-sec);
}

/* Blog article page */
.blog-article {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 0;
  line-height: 1.8;
}

.blog-article h2 {
  font-size: 1.5rem;
  margin: 40px 0 16px;
  color: var(--clr-text);
}

.blog-article h3 {
  font-size: 1.2rem;
  margin: 32px 0 12px;
  color: var(--clr-text);
}

.blog-article p {
  margin-bottom: 16px;
  color: var(--clr-text-sec);
}

.blog-article ul,
.blog-article ol {
  margin: 0 0 20px 24px;
  color: var(--clr-text-sec);
}

.blog-article li {
  margin-bottom: 8px;
}

.blog-article img {
  width: 100%;
  border-radius: var(--radius-md);
  margin: 24px 0;
}

.blog-article blockquote {
  border-left: 4px solid var(--clr-accent);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--clr-surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--clr-text-sec);
  font-style: italic;
}

.blog-article table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.blog-article th,
.blog-article td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.blog-article th {
  background: var(--clr-surface);
  color: var(--clr-accent);
  font-weight: 600;
}

.blog-article .blog-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
  color: var(--clr-text-sec);
  font-size: 0.9rem;
}

.blog-article .blog-cta {
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  padding: 32px;
  margin: 40px 0;
  text-align: center;
}

.blog-article .blog-cta h3 {
  color: var(--clr-accent);
  margin-top: 0;
}

/* ================================================================
   19. КАЛЬКУЛЯТОР
   ================================================================ */
/* Calculator form */
.calc-form {
  max-width: 800px;
  margin: 0 auto;
}

/* Section block */
.calc-section {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 16px;
  transition: border-color var(--transition);
}

.calc-section:hover {
  border-color: rgba(242, 169, 0, 0.2);
}

.calc-section__header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.calc-section__num {
  font-size: 0.75rem;
  font-weight: 700;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(242, 169, 0, 0.1);
  border: 1px solid rgba(242, 169, 0, 0.25);
  border-radius: 50%;
  flex-shrink: 0;
  color: var(--clr-accent);
  font-family: 'Montserrat', sans-serif;
}

.calc-section__title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  color: var(--clr-text);
}

/* Type cards */
.calc-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.type-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 16px 16px;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  background: var(--clr-bg-alt);
  text-align: center;
}

.type-card input[type="radio"] {
  display: none;
}

.type-card:hover {
  border-color: var(--clr-accent-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.type-card.active {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(242, 169, 0, 0.15), var(--shadow-md);
  background: linear-gradient(135deg, var(--clr-bg-alt) 0%, rgba(242, 169, 0, 0.05) 100%);
}

.type-card img {
  width: 100%;
  max-width: 160px;
  height: 100px;
  object-fit: cover;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
}

.type-card__name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--clr-text);
}

.type-card__check {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--clr-accent);
  color: #000;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--transition);
}

.type-card.active .type-card__check {
  opacity: 1;
  transform: scale(1);
}

/* Pill-style option buttons */
.calc-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.calc-option {
  position: relative;
  cursor: pointer;
}

.calc-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.calc-option span {
  display: inline-block;
  padding: 10px 18px;
  border: 1.5px solid var(--clr-border);
  border-radius: 100px;
  font-size: 0.9rem;
  color: var(--clr-text-sec);
  background: var(--clr-bg-alt);
  transition: all var(--transition);
  white-space: nowrap;
  user-select: none;
}

.calc-option:hover span {
  border-color: var(--clr-accent-light);
  color: var(--clr-text);
}

.calc-option input[type="radio"]:checked + span {
  background: rgba(242, 169, 0, 0.12);
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  font-weight: 600;
  box-shadow: 0 0 12px rgba(242, 169, 0, 0.15);
}

/* Quantity badge */
.calc-qty-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  background: var(--clr-accent);
  color: #000;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.9rem;
  margin-left: 4px;
}

/* Custom slider */
.calc-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--clr-border);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--clr-accent);
  cursor: pointer;
  border: 3px solid var(--clr-bg);
  box-shadow: 0 0 8px rgba(242, 169, 0, 0.4);
  transition: transform var(--transition);
}

.calc-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.calc-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--clr-accent);
  cursor: pointer;
  border: 3px solid var(--clr-bg);
  box-shadow: 0 0 8px rgba(242, 169, 0, 0.4);
}

.calc-slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--clr-text-sec);
  margin-top: 6px;
  padding: 0 2px;
}

/* Result block */
.calc-result {
  background: linear-gradient(135deg, var(--clr-surface) 0%, rgba(242, 169, 0, 0.06) 100%);
  border: 2px solid rgba(242, 169, 0, 0.3);
  padding: 32px;
  border-radius: var(--radius-lg);
  text-align: center;
  margin: 24px 0;
  position: relative;
  overflow: hidden;
}

.calc-result::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(242, 169, 0, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.calc-result__label {
  display: block;
  font-size: 0.9rem;
  color: var(--clr-text-sec);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.calc-result__price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--clr-accent);
  font-family: 'Montserrat', sans-serif;
  line-height: 1.2;
}

.calc-result__note {
  display: block;
  font-size: 0.85rem;
  color: var(--clr-text-sec);
  margin-top: 6px;
}

/* Sticky result bar */
.calc-result-sticky {
  position: sticky;
  top: 80px;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: linear-gradient(135deg, rgba(22, 25, 39, 0.97) 0%, rgba(42, 35, 10, 0.97) 100%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 2px solid var(--clr-accent);
  border-radius: var(--radius-md);
  padding: 16px 32px;
  margin-bottom: 24px;
  box-shadow: 0 4px 24px rgba(242, 169, 0, 0.2), 0 8px 32px rgba(0, 0, 0, 0.4);
}

.calc-result-sticky__label {
  font-size: 1rem;
  color: var(--clr-text);
  font-weight: 500;
}

.calc-result-sticky__price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-accent);
  font-family: 'Montserrat', sans-serif;
  text-shadow: 0 0 20px rgba(242, 169, 0, 0.3);
}

/* CTA block */
.calc-cta {
  background: linear-gradient(135deg, var(--clr-surface) 0%, var(--clr-bg-alt) 100%);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  margin-top: 8px;
}

.calc-cta__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--clr-text);
}

.calc-cta__subtitle {
  color: var(--clr-text-sec);
  font-size: 0.9rem;
  margin: 0 0 24px;
}

.calc-cta__form {
  max-width: 420px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calc-cta__input {
  width: 100%;
  padding: 14px 18px;
  background: var(--clr-bg-alt);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text);
  font-size: 1rem;
  transition: border-color var(--transition);
}

.calc-cta__input:focus {
  outline: none;
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(242, 169, 0, 0.1);
}

.calc-cta__btn {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

/* ================================================================
   20. RESPONSIVE BREAKPOINTS
   ================================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-image {
    order: -1;
    max-width: 500px;
    margin: 0 auto;
  }

  .hero-text {
    text-align: center;
  }

  .hero-text p {
    margin: 0 auto 36px;
  }

  .hero-buttons {
    justify-content: center;
  }

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

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

  .product-layout {
    grid-template-columns: 1fr;
  }

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

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

  .case-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile */
@media (max-width: 768px) {
  /* Navigation */
  .burger {
    display: block;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--clr-surface);
    flex-direction: column;
    padding: 60px 20px 20px;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    overflow-y: auto;
  }

  .nav-menu.active {
    display: flex;
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding-left: 16px;
    display: none;
    min-width: auto;
  }

  .dropdown.active {
    display: block;
  }

  /* Mobile overlay for nav menu */
  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 998;
    display: none;
  }

  .nav-overlay.active {
    display: block;
  }

  /* Grids */
  .advantages-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .case-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .compare-table {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .clients-logos {
    gap: 24px;
  }

  .client-logo {
    padding: 16px 20px;
  }

  .client-logo img {
    max-height: 80px;
  }

  /* Hero */
  .hero-split {
    padding: 40px 0 48px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 1rem;
  }

  /* Product */
  .product-actions {
    flex-direction: column;
  }

  /* Calculator */
  .calc-section {
    padding: 16px;
  }

  .calc-types {
    grid-template-columns: 1fr;
  }

  .type-card {
    flex-direction: row;
    gap: 12px;
    padding: 14px;
  }

  .type-card img {
    width: 80px;
    height: 56px;
    margin-bottom: 0;
  }

  .calc-options {
    gap: 8px;
  }

  .calc-option span {
    padding: 8px 14px;
    font-size: 0.85rem;
  }

  .calc-result__price {
    font-size: 2rem;
  }

  .calc-cta {
    padding: 24px 16px;
  }

  .calc-result-sticky {
    top: 60px;
    padding: 10px 16px;
  }

  /* Header — show phone link, hide callback button */
  .header-actions .btn-primary {
    display: none;
  }

  .header-phone {
    font-size: 14px;
  }

  /* Specs table scroll on small screens */
  .specs-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Sections */
  .advantages,
  .catalog-preview,
  .sendvich-preview,
  .blog-preview,
  .contact-form {
    padding: 48px 0;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .modal {
    padding: 24px;
    width: 95%;
  }

  .toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
  }
}

/* ── Секция Гарантии ── */
.guarantees-section {
  padding: 80px 0;
  background: var(--clr-bg);
}


.guarantees-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 48px;
}

.guarantees-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--clr-text);
}

.guarantee-check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 50%;
  background: var(--clr-success);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
}

.guarantees-docs {
  display: flex;
  justify-content: center;
}

.doc-preview {
  display: flex;
  gap: 24px;
}

.doc-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 28px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  min-width: 160px;
  text-decoration: none;
  cursor: pointer;
}

.doc-card:hover {
  border-color: var(--clr-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(242, 169, 0, 0.15);
}

.doc-icon {
  opacity: 0.9;
}

.doc-title {
  font-size: 0.9rem;
  color: var(--clr-text-sec);
  text-align: center;
  font-weight: 500;
}

.doc-download {
  font-size: 0.8rem;
  color: var(--clr-accent);
  font-weight: 600;
  opacity: 0;
  transition: var(--transition);
}

.doc-card:hover .doc-download {
  opacity: 1;
}

@media (max-width: 768px) {
  .guarantees-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .doc-preview {
    justify-content: center;
  }

  .guarantee-item {
    font-size: 1rem;
  }
}