/* ============================================
   КуплюКег — Custom Styles
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --amber: #f59e0b;
  --amber-dark: #d97706;
  --amber-light: #fef3c7;
  --amber-50: #fffbeb;
  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;
  --header-h: 72px;
}

/* --- Base --- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--amber-light);
  color: var(--slate-900);
}

/* --- Header --- */
#header.scrolled {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  border-color: transparent;
}

/* Burger Animation */
#burger.active .burger-line:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

#burger.active .burger-line:nth-child(2) {
  opacity: 0;
}

#burger.active .burger-line:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* Active nav link */
.nav-link.active {
  color: var(--amber);
  position: relative;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--amber);
  border-radius: 1px;
}

/* --- Mobile Menu --- */
#mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

#mobile-menu.open {
  display: block;
  max-height: 400px;
}

/* --- Price Cards --- */
.price-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.price-card:hover {
  transform: translateY(-4px);
}

/* --- Benefit Cards --- */
.benefit-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.benefit-card:hover {
  transform: translateY(-2px);
}

/* --- Step Numbers --- */
.step-number {
  position: relative;
}

/* Connector line between steps */
.space-y-8 > .flex:not(:last-child) .step-number::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 32px;
  background: linear-gradient(to bottom, var(--amber), transparent);
}

/* --- Gallery Cards --- */
.gallery-card {
  cursor: default;
}

/* --- Fitting Cards --- */
.fitting-card:hover {
  transform: translateY(-2px);
}

/* --- FAQ Accordion --- */
.faq-item {
  transition: border-color 0.3s ease;
}

.faq-item.active {
  border-color: var(--amber);
}

.faq-icon {
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, padding 0.3s ease;
}

.faq-content.open {
  display: block;
  max-height: 300px;
}

/* --- Floating Buttons --- */
.floating-btn {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.floating-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* Slow pulse for phone button */
@keyframes pulse-slow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(245, 158, 11, 0);
  }
}

.animate-pulse-slow {
  animation: pulse-slow 2.5s infinite;
}

/* --- Fade Up Animation --- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.4s; }
.fade-up:nth-child(6) { transition-delay: 0.5s; }

/* --- Counter Animation --- */
[data-count] {
  font-variant-numeric: tabular-nums;
}

/* --- Responsive Adjustments --- */
@media (max-width: 640px) {
  h1 {
    font-size: 1.875rem;
    line-height: 1.2;
  }

  .price-card:hover,
  .benefit-card:hover,
  .fitting-card:hover {
    transform: none;
  }
}

/* --- Focus States (Accessibility) --- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- Smooth image loading --- */
img {
  transition: opacity 0.3s ease;
}

img[loading="lazy"] {
  opacity: 0;
}

img[loading="lazy"].loaded,
img:not([loading="lazy"]) {
  opacity: 1;
}

/* --- Print styles --- */
@media print {
  #header,
  .floating-btn,
  #cta {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  section {
    page-break-inside: avoid;
  }
}