/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #1F3B56;
    --secondary-color: #7A8B9A;
    --accent-color: #E8F4F8;
    --white: #FFFFFF;
    --black: #000000;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #CED4DA;
    --gray-500: #ADB5BD;
    --gray-600: #6C757D;
    --gray-700: #495057;
    --gray-800: #343A40;
    --gray-900: #212529;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Playfair Display', serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Breakpoints */
    --mobile: 768px;
    --tablet: 1024px;
    --desktop: 1200px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.18);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 600;
    line-height: 1.2;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
    margin-bottom: var(--spacing-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #2a4d6b);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav__logo-text .nav__brand {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

.nav__logo-text .nav__tagline {
    font-size: 0.75rem;
    color: var(--gray-600);
    display: block;
}

.nav__menu {
    display: flex;
    align-items: center;
}

.nav__list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav__link {
    font-weight: 500;
    color: var(--gray-700);
    text-decoration: none;
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link:hover,
.nav__link.active-link {
    color: var(--primary-color);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

.nav__link:hover::after,
.nav__link.active-link::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav__toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: all var(--transition-normal);
}

/* Mobile Navigation */
@media (max-width: 767px) {
    .nav__menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

    .nav__menu.show-menu {
        left: 0;
    }

    .nav__list {
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
    }

    .nav__toggle {
        display: flex;
    }

    .nav__toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav__toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav__toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__container {
    position: relative;
    z-index: 2;
}

.hero__content {
    max-width: 600px;
    text-align: center;
}

.hero__title {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4);
}

.hero__bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(31, 59, 86, 0.8), rgba(42, 77, 107, 0.6));
}

@media (max-width: 767px) {
    .hero__buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero__buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}

/* Section Headers */
.section__header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section__title {
    margin-bottom: var(--spacing-sm);
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Products Section */
.products {
    padding: var(--spacing-xxl) 0;
    background: var(--gray-100);
}

.products__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.product__card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.product__card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product__image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

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

.product__card:hover .product__image img {
    transform: scale(1.1);
}

.product__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(31, 59, 86, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.product__card:hover .product__overlay {
    opacity: 1;
}

.product__content {
    padding: var(--spacing-md);
}

.product__name {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.product__price {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.price__old {
    color: var(--gray-500);
    text-decoration: line-through;
    font-size: 0.875rem;
}

.price__new {
    color: var(--primary-color);
    font-size: 1.25rem;
    font-weight: 600;
}

/* Features Section */
.features {
    padding: var(--spacing-xxl) 0;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.feature__card {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: 12px;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.feature__card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature__icon {
    margin-bottom: var(--spacing-md);
}

.feature__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.feature__description {
    color: var(--gray-600);
    line-height: 1.6;
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-xxl) 0;
    background: var(--gray-100);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial__card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.testimonial__card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.testimonial__stars {
    color: #FFD700;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.testimonial__text {
    font-style: italic;
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    color: var(--gray-700);
}

.testimonial__author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.testimonial__avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial__name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.testimonial__role {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin: 0;
}

/* CTA Section */
.cta {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary-color), #2a4d6b);
    color: var(--white);
}

.cta__content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta__title {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.cta__subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.cta__buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta .btn-primary {
    background: var(--white);
    color: var(--primary-color);
}

.cta .btn-primary:hover {
    background: var(--gray-100);
}

.cta .btn-secondary {
    border-color: var(--white);
    color: var(--white);
}

.cta .btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
}

@media (max-width: 767px) {
    .cta__buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta__buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer__logo-text .footer__brand {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    display: block;
}

.footer__logo-text .footer__tagline {
    font-size: 0.75rem;
    color: var(--gray-400);
    display: block;
}

.footer__description {
    line-height: 1.7;
    color: var(--gray-400);
}

.footer__title {
    color: var(--white);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.footer__contact p {
    margin-bottom: var(--spacing-xs);
    color: var(--gray-400);
}

.footer__links {
    list-style: none;
}

.footer__links li {
    margin-bottom: var(--spacing-xs);
}

.footer__links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer__social {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer__social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__social-link:hover {
    color: var(--white);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-500);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-aos="fade-up"] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

[data-aos="fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-200);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2a4d6b;
}

/* Loading States */
.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* Responsive Design */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .products__grid,
    .features__grid,
    .testimonials__grid {
        grid-template-columns: 1fr;
    }
    
    .nav__logo-text .nav__tagline {
        display: none;
    }
    
    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}