/* ===== HEADER ===== */
.site-header { position: fixed; top: 0; left: 0; right: 0; height: var(--header-height); background: white; box-shadow: 0 1px 0 var(--color-border), 0 2px 8px rgba(0,0,0,0.06); z-index: var(--z-sticky); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); }

/* Logo */
.site-logo { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; flex-shrink: 0; }
.logo-mark { width: 40px; height: 40px; background: var(--color-primary); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: white; font-size: 20px; font-weight: 900; letter-spacing: -1px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-name { font-size: var(--font-size-xl); font-weight: 900; color: var(--color-primary); letter-spacing: -0.5px; }
.logo-tagline { font-size: 10px; color: var(--color-muted); letter-spacing: 1px; text-transform: uppercase; }
.logo-company { font-size: 10px; color: var(--color-muted); letter-spacing: 0; margin-top: 1px; white-space: nowrap; }

/* Desktop nav */
.site-nav { display: flex; align-items: center; gap: var(--space-1); }
.nav-link { padding: var(--space-2) var(--space-3); border-radius: var(--radius-md); font-size: var(--font-size-sm); font-weight: 500; color: var(--color-body); transition: all var(--transition-fast); white-space: nowrap; }
.nav-link:hover { color: var(--color-primary); background: rgba(196, 30, 58, 0.06); }
.nav-link.active { color: var(--color-primary); font-weight: 700; }

/* Header actions */
.header-actions { display: flex; align-items: center; gap: var(--space-2); flex-shrink: 0; }
.header-search { display: flex; align-items: center; background: var(--color-bg-light); border: 1.5px solid var(--color-border); border-radius: var(--radius-full); padding: 6px var(--space-4); gap: var(--space-2); transition: border-color var(--transition-fast); }
.header-search:focus-within { border-color: var(--color-primary); background: white; }
.header-search input { border: none; outline: none; background: transparent; font-size: var(--font-size-sm); width: 160px; color: var(--color-title); }
.header-search input::placeholder { color: var(--color-muted); }
.header-search-btn { color: var(--color-muted); cursor: pointer; display: flex; align-items: center; font-size: 16px; }
.header-search-btn:hover { color: var(--color-primary); }

.cart-btn { position: relative; width: 40px; height: 40px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--color-body); transition: all var(--transition-fast); font-size: 20px; }
.cart-btn:hover { background: rgba(196, 30, 58, 0.06); color: var(--color-primary); }
.cart-badge { position: absolute; top: 2px; right: 2px; min-width: 18px; height: 18px; background: var(--color-primary); color: white; border-radius: var(--radius-full); font-size: 11px; font-weight: 700; display: flex; align-items: center; justify-content: center; padding: 0 4px; line-height: 1; }
.cart-badge.hidden { display: none; }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; width: 40px; height: 40px; align-items: center; justify-content: center; cursor: pointer; border-radius: var(--radius-md); transition: background var(--transition-fast); }
.hamburger:hover { background: var(--color-bg-light); }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--color-title); border-radius: 2px; transition: all var(--transition-base); transform-origin: center; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu { position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0; background: white; z-index: calc(var(--z-sticky) - 1); transform: translateX(100%); transition: transform var(--transition-base); overflow-y: auto; }
.mobile-menu.open { transform: translateX(0); }
.mobile-menu-inner { padding: var(--space-6); }
.mobile-nav-link { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) 0; border-bottom: 1px solid var(--color-border-light); font-size: var(--font-size-lg); font-weight: 500; color: var(--color-title); }
.mobile-nav-link:hover { color: var(--color-primary); }
.mobile-nav-link.active { color: var(--color-primary); font-weight: 700; }
.mobile-search { margin-bottom: var(--space-6); }
.mobile-cart-row { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) 0; border-bottom: 1px solid var(--color-border-light); }