/* ============================================================
   Professional Upgrade — dalatmilkshop.com
   14 Features: Hamburger, Search, Toast, Trust Badges, Carousel,
   Breadcrumb, Sticky, Dark Mode, Skeleton, Recently Viewed,
   Exit Popup, Micro-interactions
   v1.0 — March 2026
   ============================================================ */

/* ═══ CSS Custom Properties — Light & Dark Mode ═══════════ */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --brand-primary: #005A9C;
    --brand-accent: #FF6B35;
}

/* ═══ 10. DARK MODE ═══════════════════════════════════════ */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
}

[data-theme="dark"] body {
    background: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .header {
    background: rgba(30,41,59,0.97) !important;
    border-color: var(--border-color);
}

[data-theme="dark"] .product-card,
[data-theme="dark"] .testimonial-card,
[data-theme="dark"] .b2b-card,
[data-theme="dark"] .card-inner,
[data-theme="dark"] .blog-item--card,
[data-theme="dark"] .faq-pro-item,
[data-theme="dark"] .ai-quiz-container,
[data-theme="dark"] .feature-item {
    background: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .footer {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

[data-theme="dark"] .why-choose,
[data-theme="dark"] .bg-gray-50 {
    background: var(--bg-secondary);
}

[data-theme="dark"] .social-proof-bar {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4 {
    color: var(--text-primary);
}

[data-theme="dark"] p,
[data-theme="dark"] li,
[data-theme="dark"] .card-text,
[data-theme="dark"] .blog-article-desc {
    color: var(--text-secondary);
}

[data-theme="dark"] .faq-pro-question {
    background: var(--bg-card);
    color: var(--text-primary);
}

[data-theme="dark"] .faq-pro-answer {
    color: var(--text-secondary);
}

[data-theme="dark"] .cta {
    background: #1a365d;
}

[data-theme="dark"] .intro {
    background: var(--bg-secondary);
}

[data-theme="dark"] .features {
    background: var(--bg-primary);
}

[data-theme="dark"] .main-nav a,
[data-theme="dark"] .dropdown-content a {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-content {
    background: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .promo-ticker-bar {
    background: #1a365d;
}

[data-theme="dark"] .order-guide {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .cart-modal-content {
    background: var(--bg-card);
    color: var(--text-primary);
}

[data-theme="dark"] .cookie-consent {
    background: var(--bg-card);
    color: var(--text-primary);
}

[data-theme="dark"] .product-price {
    color: var(--brand-accent);
}

[data-theme="dark"] .trust-badge-icon {
    background: var(--bg-secondary);
}

/* Dark mode toggle button */
.dark-mode-toggle {
    background: none;
    border: 2px solid var(--border-color, #e2e8f0);
    border-radius: 20px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.05rem;
    transition: all 0.3s;
    margin-left: 8px;
    color: var(--text-primary, #1e293b);
    flex-shrink: 0;
}

.dark-mode-toggle:hover {
    border-color: var(--brand-primary, #005A9C);
    background: var(--bg-secondary, #f8fafc);
}

/* ═══ 1. HAMBURGER MENU MOBILE ════════════════════════════ */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    position: relative;
}

/* Hide hamburger on desktop always */
@media (min-width: 992px) {
    .hamburger {
        display: none !important;
    }
    .mobile-nav,
    .mobile-nav-overlay {
        display: none !important;
    }
}

.hamburger-box {
    width: 26px;
    height: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--text-primary, #1e293b);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(.4,0,.2,1);
    transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

/* Mobile nav overlay */
.mobile-nav-overlay {
    display: none !important;
}

/* Mobile nav drawer */
.mobile-nav {
    display: none !important;
}

.mobile-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav li {
    border-bottom: 1px solid var(--border-color, #e2e8f0);
}

.mobile-nav a {
    display: block;
    padding: 14px 24px;
    color: var(--text-primary, #1e293b);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.2s;
}

.mobile-nav a:hover {
    background: var(--bg-secondary, #f8fafc);
    color: var(--brand-primary, #005A9C);
}

.mobile-dropdown-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: 14px 24px;
    color: var(--text-primary, #1e293b);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.2s;
    border: none;
    background: none;
    width: 100%;
    font-family: inherit;
    text-align: left;
}

.mobile-dropdown-toggle .dd-arrow {
    transition: transform 0.3s;
    font-size: 0.75rem;
}

.mobile-dropdown-toggle.open .dd-arrow {
    transform: rotate(180deg);
}

.mobile-sub-menu {
    display: none;
    background: var(--bg-secondary, #f8fafc);
}

.mobile-sub-menu.open {
    display: block;
}

.mobile-sub-menu a {
    padding-left: 40px;
    font-size: 0.9rem;
}

.mobile-search {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
}

.mobile-search .search-input-wrap {
    width: 100%;
}

.mobile-search .search-input {
    width: 100%;
}

@media (max-width: 991px) {
    .hamburger {
        display: block;
    }
    .main-nav {
        display: none !important;
    }
    .header-search {
        display: none;
    }
    .mobile-nav-overlay {
        /* Visibility controlled by JS inline styles */
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 999;
    }
    .mobile-nav-overlay.active {
        opacity: 1;
        pointer-events: auto;
    }
    .mobile-nav {
        /* Visibility controlled by JS inline styles */
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100%;
        background: var(--bg-primary, #fff);
        z-index: 1000;
        overflow-y: auto;
        box-shadow: -4px 0 24px rgba(0,0,0,0.15);
        padding: 70px 0 20px;
    }
    .mobile-nav.active {
        right: 0;
    }
}

/* ═══ 2. CART TOAST ═══════════════════════════════════════ */
.cart-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #059669;
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-size: 0.92rem;
    font-weight: 500;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    z-index: 9999;
    opacity: 0;
    transition: all 0.4s cubic-bezier(.4,0,.2,1);
    pointer-events: none;
    max-width: 90vw;
    text-align: center;
}

.cart-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ═══ 3. SEARCH BAR ══════════════════════════════════════ */
.header-search {
    position: relative;
    margin: 0 12px;
}

.search-input-wrap {
    display: flex;
    align-items: center;
    background: var(--bg-secondary, #f1f5f9);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 8px;
    padding: 0 10px;
    transition: all 0.3s;
}

.search-input-wrap:focus-within {
    border-color: var(--brand-primary, #005A9C);
    box-shadow: 0 0 0 3px rgba(0,90,156,0.1);
}

.search-input {
    border: none;
    background: none;
    padding: 8px 8px;
    font-size: 0.9rem;
    width: 200px;
    color: var(--text-primary, #1e293b);
    outline: none;
    font-family: inherit;
}

.search-input::placeholder {
    color: var(--text-secondary, #94a3b8);
}

.search-btn {
    background: none;
    border: none;
    color: var(--text-secondary, #64748b);
    cursor: pointer;
    padding: 4px;
    font-size: 1rem;
    transition: color 0.2s;
}

.search-btn:hover {
    color: var(--brand-primary, #005A9C);
}

.search-results-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary, #fff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 0 0 10px 10px;
    box-shadow: var(--shadow-md);
    max-height: 320px;
    overflow-y: auto;
    z-index: 1100;
    display: none;
}

.search-results-dropdown.active {
    display: block;
}

.search-result-item {
    display: block;
    padding: 10px 14px;
    text-decoration: none;
    color: var(--text-primary, #1e293b);
    border-bottom: 1px solid var(--border-color, #f1f5f9);
    transition: background 0.15s;
    font-size: 0.9rem;
}

.search-result-item:hover {
    background: var(--bg-secondary, #f8fafc);
}

.search-result-item:last-child {
    border-bottom: none;
}

/* ═══ 5. TRUST BADGES ════════════════════════════════════ */
.trust-badges {
    padding: 2.5rem 0;
    background: var(--bg-secondary, #f8fafc);
    border-top: 1px solid var(--border-color, #e2e8f0);
    border-bottom: 1px solid var(--border-color, #e2e8f0);
}

.trust-badges h2 {
    text-align: center;
    font-size: 1.4rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.trust-badges-grid {
    display: flex !important;
    flex-direction: row !important;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.trust-badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    min-width: 110px;
    text-align: center;
}

.trust-badge-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border: 2px solid var(--border-color, #e2e8f0);
    transition: transform 0.3s, box-shadow 0.3s;
}

.trust-badge-item:hover .trust-badge-icon {
    transform: scale(1.1);
    box-shadow: 0 4px 16px rgba(0,90,156,0.15);
    border-color: var(--brand-primary, #005A9C);
}

.trust-badge-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary, #64748b);
    line-height: 1.3;
}

@media (max-width: 600px) {
    .trust-badges-grid {
        gap: 1.25rem;
    }
    .trust-badge-item {
        min-width: 80px;
    }
    .trust-badge-icon {
        width: 48px;
        height: 48px;
        font-size: 1.3rem;
    }
    .trust-badge-label {
        font-size: 0.75rem;
    }
}

/* ═══ 6. TESTIMONIAL CAROUSEL ════════════════════════════ */
.testimonials-carousel-wrap {
    position: relative;
    overflow: hidden;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 50px;
}

.testimonials-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(.4,0,.2,1);
    will-change: transform;
}

.testimonials-track .testimonial-card {
    flex-shrink: 0;
    box-sizing: border-box;
    padding: 0 10px;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-primary, #fff);
    border: 2px solid var(--border-color, #e2e8f0);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-primary, #1e293b);
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}

.carousel-btn:hover {
    border-color: var(--brand-primary, #005A9C);
    color: var(--brand-primary, #005A9C);
    box-shadow: var(--shadow-md);
}

.carousel-btn-prev { left: 0; }
.carousel-btn-next { right: 0; }

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 1.25rem;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color, #cbd5e1);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    padding: 0;
}

.carousel-dot.active {
    background: var(--brand-primary, #005A9C);
    transform: scale(1.3);
}

@media (max-width: 991px) {
    .testimonials-carousel-wrap {
        padding: 0 40px;
    }
}

@media (max-width: 600px) {
    .testimonials-carousel-wrap {
        padding: 0 10px;
    }
    .carousel-btn { display: none; }
}

/* ═══ 8. VISIBLE BREADCRUMB ══════════════════════════════ */
.breadcrumb-nav {
    padding: 0.75rem 0 0.5rem;
    font-size: 0.85rem;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-secondary, #64748b);
}

.breadcrumb-list li a {
    color: var(--brand-primary, #005A9C);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb-list li a:hover {
    text-decoration: underline;
}

.breadcrumb-sep {
    color: var(--text-secondary, #94a3b8);
    font-size: 0.75rem;
}

.breadcrumb-list li:last-child {
    color: var(--text-primary, #1e293b);
    font-weight: 500;
}

/* ═══ 9. STICKY HEADER DESKTOP ═══════════════════════════ */
@media (min-width: 992px) {
    .header {
        position: sticky;
        top: 0;
        z-index: 900;
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        background: rgba(255,255,255,0.97);
        transition: box-shadow 0.3s, background 0.3s;
    }
    .header.scrolled {
        box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    }
}

/* ═══ 11. SKELETON LOADING ═══════════════════════════════ */
.skeleton-active {
    position: relative;
}

.skeleton-active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    background: linear-gradient(90deg,
        var(--bg-secondary, #f0f4f8) 25%,
        var(--border-color, #e2e8f0) 50%,
        var(--bg-secondary, #f0f4f8) 75%
    );
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s ease-in-out infinite;
    border-radius: inherit;
    pointer-events: none;
}

.skeleton-active img {
    opacity: 0;
    transition: opacity 0.4s;
}

.product-card--hoverable:not(.skeleton-active) img {
    opacity: 1;
}

@keyframes skeletonShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ═══ 12. RECENTLY VIEWED PRODUCTS ═══════════════════════ */
.recently-viewed {
    padding: 2rem 0;
    background: var(--bg-secondary, #f8fafc);
}

.recently-viewed h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.recently-viewed-grid {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
}

.recently-viewed-grid::-webkit-scrollbar {
    height: 4px;
}

.recently-viewed-grid::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.rv-card {
    min-width: 180px;
    max-width: 200px;
    scroll-snap-align: start;
    background: var(--bg-card, #fff);
    border-radius: 10px;
    padding: 0.75rem;
    border: 1px solid var(--border-color, #e2e8f0);
    text-decoration: none;
    color: var(--text-primary, #1e293b);
    transition: all 0.2s;
    flex-shrink: 0;
}

.rv-card:hover {
    border-color: var(--brand-primary, #005A9C);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.rv-card-name {
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.3;
}

/* ═══ 13. EXIT-INTENT POPUP ══════════════════════════════ */
.exit-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.exit-popup-overlay.active {
    display: flex;
}

.exit-popup {
    background: var(--bg-primary, #fff);
    border-radius: 16px;
    padding: 2.5rem;
    max-width: 440px;
    width: 90%;
    text-align: center;
    position: relative;
    animation: popupSlideUp 0.4s cubic-bezier(.4,0,.2,1);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

@keyframes popupSlideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.exit-popup-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary, #94a3b8);
    transition: color 0.2s;
    line-height: 1;
}

.exit-popup-close:hover {
    color: var(--text-primary, #1e293b);
}

.exit-popup-emoji {
    font-size: 3rem;
    margin-bottom: 0.75rem;
}

.exit-popup h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.exit-popup p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.exit-popup .exit-cta {
    display: inline-block;
    background: var(--brand-accent, #FF6B35);
    color: #fff;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 1rem;
}

.exit-popup .exit-cta:hover {
    background: #E55A2B;
    transform: translateY(-1px);
}

.exit-popup .exit-skip {
    display: block;
    margin-top: 1rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    text-decoration: underline;
    font-family: inherit;
}

/* ═══ 14. MICRO-INTERACTIONS ═════════════════════════════ */
/* Card hover lift */
.product-card--hoverable {
    transition: transform 0.3s cubic-bezier(.4,0,.2,1), box-shadow 0.3s ease;
}

.product-card--hoverable:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(0,90,156,0.12);
}

/* Button press scale */
.cta-button,
.add-to-cart-btn,
.floating-btn {
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.cta-button:active,
.add-to-cart-btn:active,
.floating-btn:active {
    transform: scale(0.95);
}

/* CTA hover glow */
.cta-button:hover {
    box-shadow: 0 6px 20px rgba(255,107,53,0.3);
}

/* Product card image zoom */
.product-card--hoverable img {
    transition: transform 0.4s cubic-bezier(.4,0,.2,1);
}

.product-card--hoverable:hover img {
    transform: scale(1.05);
}

/* B2B card icon bounce */
.b2b-card:hover .b2b-icon {
    animation: iconBounce 0.5s ease;
}

@keyframes iconBounce {
    0%, 100% { transform: translateY(0); }
    30% { transform: translateY(-8px); }
    60% { transform: translateY(-3px); }
}

/* Feature item hover */
.feature-item {
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,90,156,0.1);
}

/* Testimonial card hover */
.testimonial-card {
    transition: transform 0.3s, box-shadow 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

/* Blog card hover */
.blog-item--card {
    transition: transform 0.3s cubic-bezier(.4,0,.2,1), box-shadow 0.3s;
}

.blog-item--card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.blog-item--card:hover .blog-item__img {
    transform: scale(1.03);
}

.blog-item__img {
    transition: transform 0.4s;
}

/* Floating button pulse on hover */
.floating-btn {
    position: relative;
}

.floating-btn::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border-radius: 50%;
    background: transparent;
    border: 2px solid currentColor;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    transform: scale(0.8);
    pointer-events: none;
}

.floating-btn:hover::before {
    opacity: 0.2;
    transform: scale(1);
}

/* Add-to-cart button hover */
.add-to-cart-btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 4px 12px rgba(0,90,156,0.2);
}

/* Focus visible — accessibility */
*:focus-visible {
    outline: 2px solid var(--brand-primary, #005A9C);
    outline-offset: 2px;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Header controls group */
.header-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}