/* ============================================
   COMPONENT STYLES
   Reusable UI Components
   ============================================ */

/* ===== HEADER & NAVIGATION ===== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border-light);
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    text-decoration: none;
}

.header-logo img {
    height: 32px;
    width: auto;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-base);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-gray-50);
}

.nav-link.active {
    color: var(--color-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background-color: var(--color-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-2);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

/* Cart Icon */
.cart-icon {
    position: relative;
    padding: var(--space-2);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.cart-icon:hover {
    color: var(--color-primary);
}

.cart-badge {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    background-color: var(--color-error);
    border-radius: var(--radius-full);
}

/* ===== HERO SECTION ===== */

.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + var(--space-16));
    padding-bottom: var(--space-16);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1) 0%, rgba(0, 0, 0, 0.05) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 700px;
    z-index: 1;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
    margin-bottom: var(--space-6);
    color: var(--color-text-primary);
    letter-spacing: var(--letter-spacing-tight);
}

.hero-description {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-8);
    color: var(--color-text-secondary);
}

.hero-cta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

/* ===== PRODUCT CARD ===== */

.product-card {
    display: flex;
    flex-direction: column;
    background-color: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    height: 100%;
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-color: var(--color-primary);
}

.product-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--color-gray-100);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.product-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    background-color: var(--color-secondary);
    border-radius: var(--radius-base);
    text-transform: uppercase;
}

.product-content {
    flex: 1;
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
}

.product-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
    flex: 1;
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.price-current {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.price-original {
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
    text-decoration: line-through;
}

.product-cta {
    width: 100%;
}

/* ===== FEATURES SECTION ===== */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
}

.feature-item {
    text-align: center;
    padding: var(--space-6);
    transition: transform var(--transition-base);
}

.feature-item:hover {
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-3xl);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
}

.feature-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ===== TESTIMONIALS ===== */

.testimonial-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    position: relative;
}

.testimonial-quote {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.author-avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.author-info {
    flex: 1;
}

.author-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.author-role {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.testimonial-rating {
    display: flex;
    gap: 4px;
    margin-bottom: var(--space-4);
    color: #FFA000;
}

/* ===== FOOTER ===== */

.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: var(--space-4);
    display: block;
}

.footer-description {
    color: var(--color-gray-400);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-6);
}

.footer-column h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-800);
}

.footer-copyright {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.footer-social {
    display: flex;
    gap: var(--space-4);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-gray-400);
    background-color: var(--color-gray-800);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: var(--color-white);
    background-color: var(--color-primary);
    transform: translateY(-2px);
}

/* ===== MODAL ===== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.modal {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-base);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--color-gray-100);
    color: var(--color-text-primary);
}

.modal-content {
    padding: var(--space-6);
}

.modal-footer {
    padding: var(--space-6);
    border-top: 1px solid var(--color-border-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-4);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 1024px) {
    .footer-main {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-nav {
        position: fixed;
        top: var(--header-height-mobile);
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-8);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        overflow-y: auto;
    }

    .header-nav.active {
        transform: translateX(0);
    }

    .nav-menu {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-description {
        font-size: var(--font-size-lg);
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .footer-main {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
}