/* ============================================
   HELADERÍA KAFIT — Header & Navigation
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    border-bottom-color: rgba(0,0,0,0.05);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-2xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ── Logo ── */
.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    flex-shrink: 0;
}

.header__logo img {
    height: 42px;
    width: auto;
}

.header__logo-text {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    background: var(--kafit-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header__logo-dot {
    color: var(--kafit-accent);
    -webkit-text-fill-color: var(--kafit-accent);
}

/* ── Navigation ── */
.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.header__nav-link {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--kafit-gray-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

.header__nav-link:hover,
.header__nav-link.active {
    color: var(--kafit-primary);
    background: rgba(var(--kafit-primary-rgb), 0.06);
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--kafit-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.header__nav-link.active::after { width: 20px; }

/* ── Right Actions ── */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.header__action-btn {
    width: 42px; height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--kafit-gray-700);
    transition: all var(--transition-fast);
    font-size: 1.2rem;
    position: relative;
    cursor: pointer;
    background: none;
    border: none;
}

.header__action-btn:hover {
    background: rgba(var(--kafit-primary-rgb), 0.06);
    color: var(--kafit-primary);
}

.header__cart-count {
    position: absolute;
    top: 2px; right: 2px;
    min-width: 18px; height: 18px;
    background: var(--kafit-primary);
    color: var(--kafit-white);
    font-size: 10px;
    font-weight: 700;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    animation: cartBounce 0.3s var(--transition-spring);
}

@keyframes cartBounce {
    0% { transform: scale(0); }
    60% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.header__cta {
    margin-left: var(--space-2);
}

/* ── Mobile Menu Toggle ── */
.header__mobile-toggle {
    display: none;
    width: 42px; height: 42px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: none;
    border: none;
    position: relative;
}

.hamburger {
    width: 22px; height: 16px;
    position: relative;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--kafit-dark);
    border-radius: 2px;
    position: absolute;
    left: 0;
    transition: all 0.3s ease;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 7px; }
.hamburger span:nth-child(3) { top: 14px; }

.header__mobile-toggle.active .hamburger span:nth-child(1) { top: 7px; transform: rotate(45deg); }
.header__mobile-toggle.active .hamburger span:nth-child(2) { opacity: 0; }
.header__mobile-toggle.active .hamburger span:nth-child(3) { top: 7px; transform: rotate(-45deg); }

/* ── Mobile Menu ── */
.mobile-menu {
    position: fixed;
    top: var(--header-height-mobile);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--kafit-white);
    z-index: var(--z-overlay);
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    padding: var(--space-6);
    overflow-y: auto;
}

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

.mobile-menu__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.mobile-menu__link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-4);
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--kafit-dark);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.mobile-menu__link:hover,
.mobile-menu__link.active {
    background: rgba(var(--kafit-primary-rgb), 0.06);
    color: var(--kafit-primary);
}

.mobile-menu__link-icon {
    width: 24px;
    text-align: center;
    font-size: 1.1rem;
}

.mobile-menu__cta {
    margin-top: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.mobile-menu__cta .btn {
    width: 100%;
    justify-content: center;
}

/* ── Search Overlay ── */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.search-overlay.active { opacity: 1; visibility: visible; }

.search-box {
    background: var(--kafit-white);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    width: 100%;
    max-width: 640px;
    margin: 0 var(--space-4);
    transform: translateY(-20px);
    transition: transform var(--transition-spring);
    box-shadow: var(--shadow-xl);
}

.search-overlay.active .search-box { transform: translateY(0); }

.search-input-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--kafit-gray-200);
    border-radius: var(--radius-full);
    transition: border-color var(--transition-fast);
}

.search-input-wrap:focus-within { border-color: var(--kafit-primary); }

.search-input-wrap .search-icon { font-size: 1.2rem; color: var(--kafit-gray-400); }

.search-input-wrap input {
    flex: 1;
    border: none;
    outline: none;
    font-size: var(--text-lg);
    color: var(--kafit-dark);
    background: transparent;
}

.search-results {
    margin-top: var(--space-4);
    max-height: 400px;
    overflow-y: auto;
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-3);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-result-item:hover { background: var(--kafit-gray-50); }

.search-result-item img {
    width: 50px; height: 50px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.search-result-item__info { flex: 1; }
.search-result-item__name { font-weight: 600; font-size: var(--text-sm); }
.search-result-item__price { color: var(--kafit-primary); font-weight: 600; font-size: var(--text-sm); }

/* ── Responsive ── */
@media (max-width: 1024px) {
    .header__nav { display: none; }
    .header__cta { display: none; }
    .header__mobile-toggle { display: flex; }
    .header { height: var(--header-height-mobile); }
    .main-content { padding-top: var(--header-height-mobile); }
}