/* ============================================
   Ремонт окон Сочи — Design System CSS
   Pure HTML5 + CSS3, no frameworks
   ============================================ */

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

:root {
  /* Colors */
  --primary: #3b9a3f;
  --primary-dark: #2d7a31;
  --primary-light: #e8f5e9;
  --success: #16a34a;
  --accent: #0891b2;
  --foreground: #1a2b2b;
  --muted: #6b7f8a;
  --muted-light: #94a3b8;
  --background: #ffffff;
  --secondary: #f1f5f0;
  --secondary-dark: #e2e8e0;
  --border: #d5dfe3;
  --card: #ffffff;
  --destructive: #ef4444;
  --cta-bg: #f97316;
  --cta-hover: #ea580c;
  --yellow: #facc15;

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-base: 16px;
  --line-height: 1.6;

  /* Spacing */
  --container: 1200px;
  --section-py: clamp(48px, 8vw, 80px);
  --gap: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);

  /* Radius */
  --radius: 12px;
  --radius-sm: 8px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: 0.3s ease;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  color: var(--foreground);
  background: var(--background);
  line-height: var(--line-height);
  min-height: 100vh;
}

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

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

ul, ol { list-style: none; }

/* --- Container --- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 16px;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--foreground);
}

h1 { font-size: clamp(1.8rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.1rem, 3vw, 1.5rem); }
h4 { font-size: 1.125rem; }

.text-muted { color: var(--muted); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-center { text-align: center; }
.text-balance { text-wrap: balance; }

.lead {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--muted);
  line-height: 1.7;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: var(--font);
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-cta {
  background: var(--cta-bg);
  color: #fff;
  font-size: 1.1rem;
  padding: 14px 32px;
}
.btn-cta:hover {
  background: var(--cta-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249,115,22,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-white {
  background: #fff;
  color: var(--primary);
}
.btn-white:hover {
  background: var(--secondary);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover {
  background: #15803d;
  transform: translateY(-1px);
}

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

.btn-block { width: 100%; }

/* --- Cards --- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}

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

.card-flat:hover {
  transform: none;
  box-shadow: var(--shadow-md);
}

/* --- Grid --- */
.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: repeat(2, 1fr); }

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

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: 8px; }
.gap-md { gap: 16px; }
.gap-lg { gap: 24px; }
.gap-xl { gap: 32px; }

/* --- Sections --- */
.section {
  padding: var(--section-py) 0;
}

.section-alt {
  background: var(--secondary);
}

.section-gradient {
  background: linear-gradient(135deg, rgba(59,154,63,0.04), rgba(8,145,178,0.06));
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  color: var(--muted);
  font-size: 1.125rem;
  line-height: 1.7;
}

/* --- Header / Navbar --- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  transition: padding var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  padding: 8px 0;
  box-shadow: var(--shadow-sm);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo svg {
  width: 28px;
  height: 28px;
}

.nav {
  display: none;
  gap: 28px;
  align-items: center;
}

.nav a {
  font-weight: 500;
  color: var(--foreground);
  position: relative;
  padding: 4px 0;
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

.header-phone {
  display: none;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
  padding: 8px 20px;
  background: var(--primary-light);
  border-radius: var(--radius-full);
}

.header-phone:hover {
  background: var(--primary);
  color: #fff;
}

.burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--foreground);
  border-radius: 2px;
  transition: all var(--transition);
}

.burger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (min-width: 768px) {
  .header-phone { display: flex; }
}

@media (min-width: 1024px) {
  .nav { display: flex; }
  .burger { display: none; }
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-inner {
  position: absolute;
  right: 0;
  top: 0;
  width: 300px;
  max-width: 85%;
  height: 100%;
  background: #fff;
  padding: 80px 24px 24px;
  transform: translateX(100%);
  transition: transform var(--transition);
  overflow-y: auto;
}

.mobile-menu.open .mobile-menu-inner {
  transform: translateX(0);
}

.mobile-menu-inner a {
  display: block;
  padding: 14px 0;
  font-size: 1.1rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}

.mobile-menu-inner a:hover {
  color: var(--primary);
}

.mobile-menu-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--muted);
  line-height: 1;
}

/* --- Hero --- */
.hero {
  padding: clamp(48px, 10vw, 96px) 0;
  background: linear-gradient(135deg, var(--background), rgba(59,154,63,0.03), rgba(8,145,178,0.05));
  position: relative;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin-bottom: 20px;
}

.hero .lead {
  margin-bottom: 12px;
  font-weight: 600;
  font-size: clamp(1rem, 2.5vw, 1.2rem);
}

.hero .sub-lead {
  color: var(--muted);
  margin-bottom: 32px;
  font-size: 1.05rem;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  justify-content: center;
}

@media (min-width: 640px) {
  .hero-buttons { flex-direction: row; }
}

/* Key benefits row */
.key-benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 600px;
  margin: 0 auto 36px;
}

.key-benefit {
  text-align: center;
}

.key-benefit .number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.key-benefit .title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--foreground);
  margin-top: 4px;
}

.key-benefit .desc {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 2px;
}

/* --- Stats bar --- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

@media (min-width: 768px) {
  .stats-bar { grid-template-columns: repeat(4, 1fr); }
}

.stat {
  text-align: center;
}

.stat .number {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--success);
  line-height: 1;
}

.stat .label {
  color: var(--muted);
  margin-top: 8px;
  font-size: 0.95rem;
}

/* --- Service cards --- */
.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.service-icon svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
}

.service-card h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
}

.service-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.service-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--success);
}

/* --- Advantages --- */
.advantage {
  text-align: center;
  padding: 20px;
}

.advantage-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(59,154,63,0.2);
}

.advantage-icon svg {
  width: 28px;
  height: 28px;
  color: #fff;
}

.advantage h3 {
  margin-bottom: 8px;
}

.advantage p {
  color: var(--muted);
  font-size: 0.95rem;
}

/* --- Workflow / Steps --- */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .steps { grid-template-columns: repeat(4, 1fr); }
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 4px 16px rgba(59,154,63,0.2);
}

.step h3 {
  margin-bottom: 8px;
  font-size: 1.2rem;
}

.step p {
  color: var(--muted);
  font-size: 0.95rem;
}

/* --- Reviews / Testimonials --- */
.review-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.review-name {
  font-weight: 600;
  font-size: 1rem;
}

.review-stars {
  display: flex;
  gap: 2px;
  margin-top: 2px;
  color: var(--yellow);
  font-size: 0.9rem;
}

.star {
  color: var(--yellow);
  font-size: 0.9rem;
}

.review-text {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 12px;
}

.review-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--muted-light);
}

.review-meta .service {
  font-weight: 500;
  color: var(--foreground);
}

/* --- FAQ / Accordion --- */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--card);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 500;
  font-size: 1.05rem;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font);
  color: var(--foreground);
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--secondary);
}

.faq-arrow {
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
  font-size: 1.2rem;
  color: var(--muted);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 20px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 20px 18px;
}

.faq-answer p {
  color: var(--muted);
  line-height: 1.7;
}

/* --- Pricing table --- */
.price-card {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  position: relative;
}

.price-card.popular {
  border-color: var(--primary);
  box-shadow: 0 8px 32px rgba(59,154,63,0.15);
  transform: scale(1.02);
}

.price-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  padding: 4px 20px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
}

.price-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.price-desc {
  color: var(--muted);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 24px;
}

.price-amount span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--muted);
}

.price-features {
  text-align: left;
  margin-bottom: 24px;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.95rem;
}

.price-features li::before {
  content: '✓';
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
}

/* --- Price list table --- */
.price-table {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.price-table-header {
  background: var(--secondary);
  padding: 16px 20px;
  font-weight: 700;
  font-size: 1.1rem;
}

.price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

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

.price-row .name {
  font-size: 0.95rem;
}

.price-row .cost {
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

.price-row .unit {
  font-size: 0.8rem;
  color: var(--muted);
  display: block;
  text-align: right;
}

/* --- Contact form --- */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  font-size: 0.95rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font);
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--background);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,154,63,0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  color: var(--destructive);
  font-size: 0.85rem;
  margin-top: 4px;
}

.form-success {
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 16px;
  border-radius: var(--radius-sm);
  text-align: center;
  font-weight: 500;
}

/* --- Footer --- */
.footer {
  background: var(--secondary);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

.footer h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  padding: 6px 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-contact-item svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

.footer-contact-item a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
  margin-bottom: 12px;
  font-size: 0.85rem;
}

.footer-legal a {
  color: var(--muted);
}

.footer-legal a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* --- Fixed action buttons --- */
.fixed-buttons {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 900;
}

.fixed-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}

.fixed-btn:hover {
  transform: scale(1.1);
}

.fixed-btn-phone {
  background: var(--primary);
  color: #fff;
}

.fixed-btn-whatsapp {
  background: #25d366;
  color: #fff;
}

.fixed-btn svg {
  width: 24px;
  height: 24px;
}

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  padding: 48px 24px;
  border-radius: var(--radius);
  text-align: center;
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: 16px;
}

.cta-banner p {
  opacity: 0.9;
  margin-bottom: 24px;
  font-size: 1.1rem;
}

/* --- Badge --- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--secondary);
  color: var(--foreground);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
}

.badge-primary {
  background: var(--primary-light);
  color: var(--primary-dark);
}

/* --- Team member card --- */
.team-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.team-avatar {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 2rem;
  color: #fff;
  font-weight: 700;
}

.team-card h3 { margin-bottom: 4px; }

.team-role {
  color: var(--primary);
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.team-experience {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.team-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--muted);
  padding: 16px 0;
}

.breadcrumbs a {
  color: var(--primary);
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumbs span {
  margin: 0 4px;
}

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

.mb-sm { margin-bottom: 8px; }
.mb-md { margin-bottom: 16px; }
.mb-lg { margin-bottom: 24px; }
.mb-xl { margin-bottom: 48px; }
.mt-lg { margin-top: 24px; }
.mt-xl { margin-top: 48px; }

.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-md { max-width: 600px; }
.max-w-lg { max-width: 800px; }
.max-w-xl { max-width: 1000px; }

/* --- Print --- */
@media print {
  .header, .footer, .fixed-buttons, .mobile-menu, .btn { display: none !important; }
  body { font-size: 12pt; color: #000; }
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}