/* ═══════════════════════════════════════
   COMPONENTS — Buttons, Cards, UI atoms
   ═══════════════════════════════════════ */

@layer components {
  /* ═══════ BUTTONS ═══════ */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--ff-body);
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    padding: 1rem 2.5rem;
    border-radius: var(--radius-full);
    transition: all var(--dur-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    white-space: nowrap;
    min-width: fit-content;
  }

  .btn--gold {
    background: var(--c-gold);
    color: var(--c-bg);
  }
  .btn--gold:active {
    transform: translateY(0);
  }

  .btn--outline {
    background: transparent;
    color: var(--c-white);
    border: 1px solid rgba(255,255,255,0.3);
  }

  .btn--lg {
    padding: 1.2rem 3rem;
  }

  .btn--sm {
    padding: 0.75rem 1.75rem;
    font-size: var(--fs-xs);
  }

  .btn__arrow {
    transition: transform var(--dur-fast) var(--ease-out);
  }

  /* Hover effects for devices with pointer */
  /* ═══════ PRELOADER ═══════ */
  .preloader {
    position: fixed;
    inset: 0;
    z-index: var(--z-preloader);
    background: var(--c-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s var(--ease-out), visibility 0.6s;
  }
  .preloader.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  .preloader__inner {
    text-align: center;
  }
  .preloader__text {
    display: block;
    font-family: var(--ff-heading);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: var(--fw-light);
    color: var(--c-white);
    margin-top: var(--sp-md);
    letter-spacing: var(--ls-wide);
  }
  .preloader__line {
    width: 60px;
    height: 2px;
    background: var(--c-gold);
    margin: 0 auto;
    animation: preloaderLine 1.2s var(--ease-in-out) infinite;
  }
  @keyframes preloaderLine {
    0%, 100% { transform: scaleX(0.3); opacity: 0.4; }
    50% { transform: scaleX(1); opacity: 1; }
  }

  /* ═══════ HEADER ═══════ */
  .header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-header);
    padding: 1.25rem 0;
    transition: all var(--dur-normal) var(--ease-out);
    background: linear-gradient(180deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 60%, rgba(0,0,0,0) 100%);
  }
  .header .container {
    max-width: none; /* allow header content to span full viewport width */
    width: 100%;
    padding-inline: var(--container-pad);
  }
  .header.is-scrolled {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--c-border);
  }
  .header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-lg);
    position: relative;
  }

  .header__logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1 1 0;
  }
  .header__logo-text {
    font-family: var(--ff-heading);
    font-size: 1.85rem;
    font-weight: var(--fw-semibold);
    color: var(--c-gold);
    line-height: 1;
  }
  .header__logo-full {
    font-family: var(--ff-heading);
    font-size: 1.05rem;
    font-weight: var(--fw-semibold);
    color: var(--c-white);
    letter-spacing: var(--ls-wide);
    line-height: 1.2;
  }

  .header__nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }

  .header__nav-list {
    display: flex;
    gap: var(--sp-lg);
  }
  .header__nav-link {
    font-size: 0.85rem;
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    color: rgba(255,255,255,0.85);
    transition: color var(--dur-fast) var(--ease-out);
    position: relative;
  }
  .header__nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--c-gold);
    transition: width var(--dur-normal) var(--ease-out);
  }

  .header__actions {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
    flex: 1 1 0;
    justify-content: flex-end;
  }
  .header__phone {
    font-size: clamp(0.9rem, 1.1vw, 0.95rem);
    font-weight: var(--fw-semibold);
    color: rgba(255,255,255,0.9);
    transition: color var(--dur-fast);
    letter-spacing: 0.05em;
  }

  /* Hover effects for header navigation and phone */
  /* Burger */
  .header__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    padding: 4px 0;
  }
  .header__burger span {
    display: block;
    width: 100%;
    height: 1.5px;
    background: var(--c-white);
    transition: all var(--dur-normal) var(--ease-out);
    transform-origin: center;
  }
  .header__burger.is-active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 5px);
  }
  .header__burger.is-active span:nth-child(2) {
    opacity: 0;
  }
  .header__burger.is-active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -5px);
  }

  /* Mobile Nav Close Button */
  .header__nav-close {
    display: none;
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    z-index: calc(var(--z-nav-overlay) + 2);
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    background-color: transparent;
    color: var(--c-white);
    cursor: pointer;
    transition: all var(--dur-fast) var(--ease-out);
    align-items: center;
    justify-content: center;
    flex-direction: column;
  }
  .header__nav-close svg {
    width: 20px;
    height: 20px;
  }

  /* Hover effects for close button */

  @media (hover: hover) and (pointer: fine) {
  .btn--gold:hover {
      background: var(--c-gold-light);
      box-shadow: var(--shadow-gold);
    }

    .btn--outline:hover {
      border-color: var(--c-gold);
      color: var(--c-gold);
    }

    .btn:hover .btn__arrow {
      transform: translateX(4px);
    }
  .header__nav-link:hover {
      color: var(--c-white);
    }
    .header__nav-link:hover::after {
      width: 100%;
    }

    .header__phone:hover {
      color: var(--c-gold);
    }
  .header__nav-close:hover {
      border-color: var(--c-gold);
      color: var(--c-gold);
    }
  }

}