/* Prousta — motion, kölgələr, ümumi UI */

:root {
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 0.2s;
  --dur-normal: 0.4s;
  --dur-slow: 0.65s;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 28px rgba(15, 23, 42, 0.09);
  --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
  --shadow-brand: 0 8px 32px rgba(26, 71, 200, 0.18);
}

html { scroll-behavior: smooth; }

/* Səhifə girişi */
.page-shell {
  opacity: 0;
  animation: pageIn var(--dur-slow) var(--ease-out) forwards;
}

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

/* Scroll reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}

[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal="fade"] { transform: none; }

[data-stagger] > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-normal) var(--ease-out), transform var(--dur-normal) var(--ease-out);
}

[data-stagger].is-visible > * { opacity: 1; transform: translateY(0); }

[data-reveal].is-visible [data-stagger] > * {
  opacity: 1;
  transform: translateY(0);
}

/* Nav scroll */
nav {
  transition: box-shadow var(--dur-normal), border-color var(--dur-normal), background var(--dur-normal) !important;
}

nav.is-scrolled {
  box-shadow: var(--shadow-sm) !important;
  background: rgba(255, 255, 255, 0.97) !important;
}

/* Düymələr */
.btn {
  transition: background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast),
    transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-fast) !important;
}

.btn-primary {
  box-shadow: 0 2px 10px rgba(26, 71, 200, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(26, 71, 200, 0.32);
}

.btn:active { transform: scale(0.98); }

/* Toast */
.msg {
  box-shadow: var(--shadow-md);
  transition: opacity var(--dur-fast), transform var(--dur-fast);
}

.msg.is-dismissing {
  opacity: 0;
  transform: translateX(20px);
}

/* Kartlar */
.kart {
  transition: transform var(--dur-normal) var(--ease-out), box-shadow var(--dur-normal), border-color var(--dur-fast) !important;
}

.kart:hover {
  box-shadow: var(--shadow-md) !important;
}

.kart-img img {
  transition: transform var(--dur-slow) var(--ease-out);
}

.kart:hover .kart-img img { transform: scale(1.04); }

/* Mobil menyu overlay */
.mobil-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  top: 64px;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: 198;
  opacity: 0;
  transition: opacity var(--dur-normal);
}

.mobil-menu-overlay.aktiv { display: block; opacity: 1; }

.mobil-menu {
  left: auto !important;
  right: 0 !important;
  width: min(300px, 88vw) !important;
  transform: translateX(100%);
  transition: transform var(--dur-normal) var(--ease-out) !important;
  box-shadow: var(--shadow-lg) !important;
}

.mobil-menu.aktiv {
  display: flex !important;
  transform: translateX(0) !important;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal], [data-stagger] > *, .page-shell { opacity: 1; transform: none; animation: none; }
}