/* 
===================
Table of Contents
===================
1. Global Styles
2. Utilities
3. Preloader
4. Header
5. Hero Section
6. Features
7. About
8. Services
9. Portfolio
10. Testimonials
11. Stats
12. Team
13. CTA
14. Contact
15. Newsletter
16. Footer
17. Responsive
===================
*/

/* =============== 1. Global Styles =============== */
:root {
    /* Colors */
    --primary-color: #4c6ef5;
    --primary-dark: #364fc7;
    --secondary-color: #20c997;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --gray-light: #dee2e6;
    --gray-dark: #343a40;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Montserrat', sans-serif;
    
    /* Others */
    --transition: all 0.3s ease;
    --border-radius: 5px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.2);
}

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

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
    scroll-padding-top: 9rem;
}

body {
    font-family: var(--font-primary);
    font-size: 1.6rem;
    line-height: 1.7;
    color: var(--dark-color);
    background-color: #ffffff;
    overflow-x: hidden;
}

section {
    padding: 8rem 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

h1 {
    font-size: 4.8rem;
}

h2 {
    font-size: 3.6rem;
}

h3 {
    font-size: 2.4rem;
}

h4 {
    font-size: 2rem;
}

p {
    margin-bottom: 1.5rem;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* =============== 2. Utilities =============== */
.container {
    width: 100%;
    max-width: 120rem;
    padding: 0 1.5rem;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 1.2rem 2.5rem;
    font-size: 1.6rem;
    line-height: 1.5;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
}

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

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

.btn-outline {
    background-color: transparent;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.btn-light {
    background-color: var(--light-color);
    color: var(--dark-color);
}

.btn-light:hover {
    background-color: white;
    color: var(--dark-color);
}

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

.btn-dark:hover {
    background-color: var(--gray-dark);
    color: white;
}

.section-header {
    text-align: center;
    max-width: 70rem;
    margin: 0 auto 5rem;
}

.section-divider {
    width: 5rem;
    height: 3px;
    background-color: var(--primary-color);
    margin: 1.5rem auto 2rem;
}

.section-header p {
    color: var(--gray-color);
    font-size: 1.8rem;
}

/* =============== 3. Preloader =============== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: white;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loader {
    width: 5rem;
    height: 5rem;
    border: 5px solid var(--gray-light);
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* =============== 4. Header =============== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: transparent;
    z-index: 1000;
    padding: 2rem 0;
    transition: var(--transition);
}

.header.sticky {
    background-color: white;
    box-shadow: var(--box-shadow);
    padding: 1rem 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo a {
    display: flex;
    align-items: center;
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--light-color);
    transition: var(--transition);
}

.header.sticky .logo a {
    color: var(--dark-color);
}

.logo img {
    height: 4rem;
    margin-right: 1rem;
}

.nav-menu {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.nav-item {
    margin: 0 1.5rem;
}

.nav-link {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--light-color);
    position: relative;
    padding-bottom: 0.5rem;
}

.header.sticky .nav-link {
    color: var(--dark-color);
}

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

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

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 2.5rem;
    height: 3px;
    margin: 5px auto;
    -webkit-transition: var(--transition);
    transition: var(--transition);
    background-color: var(--light-color);
}

.header.sticky .bar {
    background-color: var(--dark-color);
}

/* =============== 5. Hero Section =============== */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: var(--dark-color);
}

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

.hero-content {
    max-width: 70rem;
    color: white;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    color: white;
    margin-bottom: 2rem;
}

.hero-content p {
    font-size: 1.8rem;
    margin-bottom: 3rem;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
}

/* =============== 6. Features =============== */
.features {
    padding-top: 6rem;
    padding-bottom: 2rem;
    background-color: var(--light-color);
    margin-top: -6rem;
    border-radius: 1rem 1rem 0 0;
    position: relative;
    z-index: 2;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
    gap: 3rem;
}

.feature-card {
    background-color: white;
    padding: 3rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

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

.feature-icon {
    width: 7rem;
    height: 7rem;
    border-radius: 50%;
    background-color: rgba(76, 110, 245, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 2rem;
}

.feature-icon i {
    font-size: 2.8rem;
    color: var(--primary-color);
}

.feature-card h3 {
    margin-bottom: 1.5rem;
}

/* =============== 7. About =============== */
.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(35rem, 1fr));
    gap: 4rem;
    align-items: center;
}

.about-image {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.about-text h3 {
    font-size: 2.2rem;
    margin-top: 2rem;
}

.stats-container {
    display: flex;
    flex-wrap: wrap;
    margin: 3rem 0;
    gap: 2rem;
}

.stat-item {
    flex: 1;
    min-width: 10rem;
    text-align: center;
    padding: 1.5rem;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
}

.stat-item h4 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* =============== 8. Services =============== */
.services {
    background-color: var(--light-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 3rem;
}

.service-card {
    background-color: white;
    padding: 4rem 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.service-icon {
    width: 8rem;
    height: 8rem;
    border-radius: 50%;
    background-color: rgba(76, 110, 245, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2.5rem;
}

.service-icon i {
    font-size: 3.2rem;
    color: var(--primary-color);
}

.service-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    margin-top: 1.5rem;
}

.service-link i {
    margin-left: 0.5rem;
    transition: var(--transition);
}

.service-link:hover i {
    transform: translateX(5px);
}

/* =============== 9. Portfolio =============== */
.portfolio-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
    gap: 1rem;
}

.filter-btn {
    background: none;
    border: 1px solid var(--gray-light);
    padding: 1rem 2rem;
    border-radius: 5rem;
    font-size: 1.4rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(30rem, 1fr));
    gap: 3rem;
}

.portfolio-item {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.portfolio-image {
    position: relative;
    overflow: hidden;
}

.portfolio-image img {
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(76, 110, 245, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-info {
    text-align: center;
    color: white;
}

.portfolio-info h3 {
    color: white;
    margin-bottom: 0.5rem;
}

.portfolio-link {
    display: inline-block;
    margin-top: 1.5rem;
    width: 4rem;
    height: 4rem;
    line-height: 4rem;
    background-color: white;
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 1.6rem;
}

/* =============== 10. Testimonials =============== */
.testimonials {
    background-color: var(--light-color);
}

.testimonial-slider {
    position: relative;
    max-width: 80rem;
    margin: 0 auto;
    overflow: hidden;
}

.testimonial-item {
    display: none;
}

.testimonial-item.active {
    display: block;
    animation: fadeIn 1s;
}

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

.testimonial-content {
    background-color: white;
    padding: 4rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.testimonial-text {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 3rem;
}

.testimonial-text i {
    position: absolute;
    top: 0;
    left: 0;
    font-size: 2.4rem;
    color: var(--primary-color);
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author img {
    width: 6rem;
    height: 6rem;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 2rem;
}

.author-info h4 {
    margin-bottom: 0.5rem;
}

.author-info p {
    color: var(--gray-color);
    margin: 0;
}

.testimonial-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 3rem;
}

.prev-btn,
.next-btn {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
}

.prev-btn:hover,
.next-btn:hover {
    color: var(--primary-dark);
}

.testimonial-dots {
    display: flex;
    margin: 0 2rem;
}

.dot {
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    background-color: var(--gray-light);
    margin: 0 0.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background-color: var(--primary-color);
    transform: scale(1.3);
}

/* =============== 11. Stats =============== */
.stats {
    background-color: var(--primary-color);
    color: white;
    padding: 6rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
    gap: 3rem;
}

.stat-box {
    text-align: center;
}

.stat-box i {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.stat-box h3 {
    font-size: 4rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
}

.stat-box p {
    font-size: 1.8rem;
    margin: 0;
}

/* =============== 12. Team =============== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
    gap: 3rem;
}

.team-member {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.member-image {
    position: relative;
    overflow: hidden;
}

.member-social {
    position: absolute;
    bottom: -5rem;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    transition: var(--transition);
}

.team-member:hover .member-social {
    bottom: 0;
}

.member-social a {
    display: inline-block;
    width: 4rem;
    height: 4rem;
    line-height: 4rem;
    background-color: white;
    margin: 0 0.5rem;
    color: var(--primary-color);
    border-radius: 0.5rem 0.5rem 0 0;
    text-align: center;
    font-size: 1.6rem;
    transition: var(--transition);
}

.member-social a:hover {
    background-color: var(--primary-color);
    color: white;
}

.member-info {
    padding: 2rem;
    text-align: center;
}

.member-info h4 {
    margin-bottom: 0.5rem;
}

.member-info p {
    color: var(--gray-color);
    margin: 0;
}

/* =============== 13. CTA =============== */
.cta {
    background-image: linear-gradient(to right, rgba(76, 110, 245, 0.9), rgba(54, 79, 199, 0.9)), url('../images/cta-bg.jpg');
    background-size: cover;
    background-position: center;
    padding: 8rem 0;
}

.cta-content {
    text-align: center;
    color: white;
    max-width: 80rem;
    margin: 0 auto;
}

.cta-content h2 {
    color: white;
    margin-bottom: 2rem;
}

.cta-content p {
    font-size: 1.8rem;
    margin-bottom: 3rem;
}

/* =============== 14. Contact =============== */
.contact-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
}

.info-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-right: 2rem;
    margin-top: 0.5rem;
}

.info-item h4 {
    margin-bottom: 0.5rem;
}

.info-item p {
    color: var(--gray-color);
    margin: 0;
}

.contact-form {
    background-color: white;
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.form-group {
    margin-bottom: 2rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.contact-form form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-size: 1.6rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* =============== 15. Newsletter =============== */
.newsletter {
    background-color: var(--light-color);
    padding: 4rem 0;
}

.newsletter-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 3rem;
}

.newsletter-text h3 {
    margin-bottom: 0.5rem;
}

.newsletter-text p {
    color: var(--gray-color);
    margin: 0;
}

.newsletter-form {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.newsletter-form input {
    flex: 1;
    min-width: 25rem;
    padding: 1.2rem 2rem;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-size: 1.6rem;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* =============== 16. Footer =============== */
.footer {
    background-color: var(--dark-color);
    color: #fff;
    padding-top: 6rem;
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
    gap: 4rem;
    padding-bottom: 4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-logo img {
    height: 4rem;
    margin-right: 1rem;
}

.footer-logo h3 {
    color: white;
    margin: 0;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-links a {
    display: inline-block;
    width: 4rem;
    height: 4rem;
    line-height: 4rem;
    text-align: center;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 50%;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: white;
}

.footer-column h3 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 2.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 5rem;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-links li {
    margin-bottom: 1rem;
}

.footer-links a {
    color: #ced4da;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 0.5rem;
}

.footer-contact li {
    display: flex;
    margin-bottom: 1.5rem;
    color: #ced4da;
}

.footer-contact li i {
    margin-right: 1.5rem;
    color: var(--primary-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 2rem 0;
}

.footer-bottom-links a {
    color: #ced4da;
    margin-left: 2rem;
}

.back-to-top {
    position: fixed;
    right: 3rem;
    bottom: 3rem;
    width: 4.5rem;
    height: 4.5rem;
    line-height: 4.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    text-align: center;
    font-size: 2rem;
    box-shadow: var(--box-shadow);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

/* =============== 17. Responsive =============== */
@media (max-width: 1024px) {
    html {
        font-size: 56.25%;
    }
    
    h1 {
        font-size: 4.2rem;
    }
    
    h2 {
        font-size: 3.2rem;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 50%;
    }
    
    section {
        padding: 6rem 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        top: 8rem;
        left: -100%;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 1.5rem 0;
    }
    
    .nav-link {
        color: var(--dark-color);
    }
    
    .header.sticky .nav-menu {
        top: 6rem;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .newsletter-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-bottom-links {
        margin-top: 1rem;
    }
    
    .footer-bottom-links a {
        margin: 0 1rem;
    }
    
    .image-credits {
        width: 100%;
        text-align: center;
        margin-top: 2rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 2rem;
    }
    
    .image-credits p {
        color: var(--gray-color);
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }
    
    .image-credits ul {
        list-style: none;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .image-credits li {
        color: var(--gray-light);
        font-size: 1.2rem;
        margin: 0.5rem 1rem;
        opacity: 0.7;
    }
}

@media (max-width: 576px) {
    .feature-card,
    .service-card {
        padding: 2rem;
    }
    
    .testimonial-content {
        padding: 2rem;
    }
    
    .testimonial-author img {
        width: 5rem;
        height: 5rem;
    }
    
    .contact-form form {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form input {
        width: 100%;
    }
}

/* Custom Animations */
[data-aos="custom-fade-up"] {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

[data-aos="custom-fade-right"] {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

[data-aos="custom-fade-left"] {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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