/* ===================================
   Global Styles & CSS Variables
   =================================== */

:root {
    /* Color Palette */
    --primary-color: #E53935;
    --secondary-color: #111827;
    --background-color: #F8FAFC;
    --text-color: #1F2937;
    --light-text: #6B7280;
    --white: #FFFFFF;
    --border-radius: 16px;

    /* Gradient */
    --gradient-primary: linear-gradient(135deg, #E53935 0%, #D32F2F 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-bg: linear-gradient(135deg, #1F2937 0%, #111827 100%);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 1rem;
    position: relative;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--light-text);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ===================================
   Navigation Bar
   =================================== */

.navbar {
    padding: 1.2rem 0;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    padding: 0.8rem 0;
}

.logo-img {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 12px;
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.05) rotate(5deg);
}

.brand-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-color);
    letter-spacing: -0.5px;
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    margin: 0 0.2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link:focus {
    color: var(--primary-color);
    background: rgba(229, 57, 53, 0.05);
}

.navbar-toggler {
    padding: 0.5rem;
    font-size: 1.5rem;
}

.navbar-toggler:focus {
    box-shadow: none;
}

/* ===================================
   Buttons
   =================================== */

.btn {
    padding: 0.75rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-gradient {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(229, 57, 53, 0.3);
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(229, 57, 53, 0.4);
    color: var(--white);
}

.btn-gradient:active {
    transform: translateY(0);
}

.btn-outline-light {
    border: 2px solid var(--white);
    color: var(--white);
    background: transparent;
}

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

.btn-light {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.btn-light:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ===================================
   Hero Section
   =================================== */

.hero-section {
    min-height: 100vh;
    position: relative;
    background: var(--gradient-bg);
    overflow: hidden;
    padding: 100px 0 50px;
}

.animated-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
    overflow: hidden;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(40px);
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--gradient-primary);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: #667eea;
    bottom: -100px;
    left: -150px;
    animation-delay: 5s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: var(--primary-color);
    top: 50%;
    right: 10%;
    animation-delay: 10s;
}

.shape-4 {
    width: 200px;
    height: 200px;
    background: #764ba2;
    bottom: 20%;
    right: 30%;
    animation-delay: 15s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 30px) scale(0.9);
    }
}

.hero-section .container,
.hero-section .row {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero-image-wrapper {
    position: relative;
    animation: fadeInUp 1s ease;
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    transition: transform 0.3s ease;
}

.hero-image:hover {
    transform: scale(1.02);
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: floatCard 3s infinite ease-in-out;
}

.floating-card i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.floating-card span {
    font-weight: 600;
    color: var(--text-color);
}

.card-1 {
    top: 10%;
    right: -10%;
    animation-delay: 0s;
}

.card-2 {
    bottom: 30%;
    left: -10%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 10%;
    right: 10%;
    animation-delay: 2s;
}

@keyframes floatCard {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

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

/* ===================================
   About Section
   =================================== */

.about-section {
    background: var(--white);
    padding: 100px 0;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
    height: 100%;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(229, 57, 53, 0.1) 0%, rgba(229, 57, 53, 0.05) 100%);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    background: var(--gradient-primary);
    transform: scale(1.1) rotate(5deg);
}

.feature-icon i {
    font-size: 2.5rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon i {
    color: var(--white);
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.feature-text {
    color: var(--light-text);
    font-size: 1rem;
    line-height: 1.7;
}

/* ===================================
   Products Section
   =================================== */

.products-section {
    background: var(--background-color);
    padding: 100px 0;
}

.product-card {
    background: var(--white);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: all 0.4s ease;
    text-align: center;
    border: 2px solid transparent;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.product-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow: 0 8px 24px rgba(229, 57, 53, 0.3);
}

.product-icon i {
    font-size: 3rem;
    color: var(--white);
}

.product-name {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.product-description {
    font-size: 1.1rem;
    color: var(--light-text);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.product-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    text-align: left;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(229, 57, 53, 0.05);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(229, 57, 53, 0.1);
    transform: translateX(5px);
}

.feature-item i {
    font-size: 1.25rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.feature-item span {
    font-weight: 500;
    color: var(--text-color);
}

/* ===================================
   Why Choose Us Section
   =================================== */

.why-section {
    background: var(--white);
    padding: 100px 0;
}

.why-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
    height: 100%;
}

.why-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.why-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: var(--gradient-primary);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.why-card:hover .why-icon {
    transform: scale(1.1) rotate(-5deg);
}

.why-icon i {
    font-size: 2rem;
    color: var(--white);
}

.why-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.why-text {
    color: var(--light-text);
    line-height: 1.7;
    margin: 0;
}

/* ===================================
   Reviews Section
   =================================== */

.reviews-section {
    background: var(--background-color);
    padding: 100px 0;
}

.review-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.review-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.review-stars {
    margin-bottom: 1.5rem;
}

.review-stars i {
    color: #FFC107;
    font-size: 1.25rem;
    margin-right: 0.25rem;
}

.review-text {
    font-size: 1.05rem;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 2rem;
    flex-grow: 1;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.author-avatar {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(229, 57, 53, 0.1) 0%, rgba(229, 57, 53, 0.05) 100%);
}

.author-avatar i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.author-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.author-title {
    font-size: 0.95rem;
    color: var(--light-text);
    margin: 0;
}

/* ===================================
   CTA Section
   =================================== */

.cta-section {
    background: var(--gradient-bg);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(229, 57, 53, 0.2) 0%, transparent 70%);
    top: -250px;
    right: -250px;
    border-radius: 50%;
}

.cta-section::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.2) 0%, transparent 70%);
    bottom: -200px;
    left: -200px;
    border-radius: 50%;
}

.cta-section .container {
    position: relative;
    z-index: 2;
}

.cta-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.cta-text {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.5rem;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--secondary-color);
    padding: 3rem 0 1.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.social-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    justify-content: flex-end;
}

.social-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    font-size: 1.25rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-5px) scale(1.1);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.1);
    margin: 2rem 0 1.5rem;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
    font-size: 0.95rem;
}

/* ===================================
   Scroll to Top Button
   =================================== */

.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 991px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .cta-title {
        font-size: 2.25rem;
    }

    .navbar-collapse {
        background: var(--white);
        padding: 1.5rem;
        border-radius: var(--border-radius);
        margin-top: 1rem;
        box-shadow: var(--shadow-md);
    }

    .nav-item {
        margin: 0.25rem 0;
    }

    .hero-buttons {
        justify-content: center;
    }

    .floating-card {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }

    .social-links {
        justify-content: center;
        margin-top: 1.5rem;
    }
}

@media (max-width: 767px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    .cta-text {
        font-size: 1.1rem;
    }

    .btn {
        padding: 0.65rem 1.5rem;
        font-size: 0.95rem;
    }

    .floating-card {
        position: static;
        margin: 1rem auto;
        max-width: 200px;
    }

    .product-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 575px) {
    .hero-section {
        padding: 80px 0 30px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

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

    .about-section,
    .products-section,
    .why-section,
    .reviews-section {
        padding: 60px 0;
    }

    .cta-section {
        padding: 80px 0;
    }

    .brand-name {
        font-size: 1.1rem;
    }

    .logo-img {
        width: 38px;
        height: 38px;
    }
}

/* ===================================
   Utility Classes
   =================================== */

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Smooth Transitions */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection Color */
::selection {
    background: var(--primary-color);
    color: var(--white);
}

::-moz-selection {
    background: var(--primary-color);
    color: var(--white);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #D32F2F;
}