:root {
    --primary: #0451ab;
    --primary-light: #e6f0ff;
    --primary-dark: #03408a;
    --text: #333;
    --text-light: #666;
    --white: #fff;
    --gray: #f8f9fa;
    --gray-dark: #e9ecef;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    color: var(--text);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header */
#header {
    padding: 0.2rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    width: 100%;
    background-color: var(--white);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

#header.scrolled {
    padding: 0.8rem 5%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.mobile-menu-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--white);
    z-index: 1000;
    transform: translateX(-100%);
    transition: var(--transition);
}

.mobile-menu-sidebar.active {
    transform: translateX(0);
}

.mobile-menu-sidebar-content {
    padding: 2rem;
}

.mobile-menu-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.mobile-menu-sidebar-close {
    cursor: pointer;
}

.mobile-menu-sidebar-close i {
    font-size: 1.5rem;
}

.mobile-menu-sidebar nav ul {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mobile-menu-sidebar nav ul li a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.mobile-menu-sidebar nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

.mobile-menu-sidebar nav ul li a:hover::after {
    width: 100%;
}

.mobile-menu-sidebar nav ul li a:hover {
    color: var(--primary);
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    font-size: 1.6rem;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin-bottom: 0;
}

nav ul li a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

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

nav ul li a:hover::after {
    width: 100%;
}

nav ul li a:hover {
    color: var(--primary);
}

.dropdown-toggle::after {
    margin-left: 0;
    border: 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.btn {
    padding: 0.7rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.btn-outline {
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

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

.btn-solid:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(4, 81, 171, 0.2);
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text);
}

/* Hero Section */
.hero {
    padding: 8rem 5% 6rem;
    display: flex;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(255, 255, 255, 1) 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 3.2rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
}

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

/* Upload Section */
.upload-section {
    background-color: var(--white);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 10px 40px rgba(0, 81, 171, 0.1);
    border: 1px solid var(--gray-dark);
    transition: var(--transition);
    max-width: 700px;
    margin-left: 20px;
}

.upload-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(0, 81, 171, 0.15);
}

.upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    cursor: pointer;
    text-align: center;
}

.upload-icon {
    font-size: 3.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.upload-text h3 {
    margin-bottom: 0.8rem;
    color: var(--text);
    font-size: 1.5rem;
}

.upload-text p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.btn-upload {
    background-color: var(--primary);
    color: var(--white);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 250px;
}

/* Animated Blink Effect */
.btn-upload::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 20px;
    height: 200%;
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(30deg);
    animation: blink 3s infinite;
}

@keyframes blink {

    0%,
    100% {
        left: -60%;
    }

    20% {
        left: 120%;
    }
}

.btn-upload:hover {
    background-color: var(--primary-dark);
    box-shadow: 0 8px 20px rgba(4, 81, 171, 0.3);
}

/* Features Section */
.features {
    padding: 6rem 5%;
    background-color: var(--white);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background-color: var(--white);
    border-radius: 12px;
    padding: 2.5rem 2rem;
    transition: var(--transition);
    border: 1px solid var(--gray-dark);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.05);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--primary);
    font-size: 1.8rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.feature-card p {
    color: var(--text-light);
}

/* About Section */
.about {
    padding: 6rem 5%;
    background-color: var(--gray);
}

.about-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

.about-content h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.about-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

/* FAQ Section */
.faq {
    padding: 6rem 5%;
    background-color: var(--white);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--gray-dark);
}

.faq-question {
    padding: 1.5rem;
    background-color: var(--white);
    color: var(--text);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: var(--gray);
}

.faq-question i {
    transition: var(--transition);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background-color: var(--gray);
}

.faq-answer p {
    padding: 1.5rem 0;
    color: var(--text-light);
    line-height: 1.7;
}

.faq-item.active .faq-question {
    background-color: var(--primary);
    color: var(--white);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* Footer */
footer {
    background-color: #0a2540;
    color: var(--white);
    padding: 5rem 5% 2rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.footer-about p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary);
    transform: translateY(-3px);
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.8rem;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary);
}

.footer-column ul {
    list-style: none;
    padding-left: 0;
}

.footer-column ul li {
    margin-bottom: 0.8rem;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 3rem;
    margin-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 1024px) {

    .hero-container,
    .about-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-content,
    .about-content {
        max-width: 100%;
        text-align: center;
    }

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

    .upload-section {
        margin: 0 auto;
    }

    .about-image {
        order: -1;
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    #header {
        padding: 1rem 5%;
    }

    .drop-down .drop-down-menu {
        right: unset;
        left: 0;
    }

    .mobile-menu {
        display: block;
    }

    .header-actions {
        display: none;
    }

    .hero {
        padding: 6rem 5% 4rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .nav-bar-menu-btn {
        display: none !important;
    }

    #header + .section .container {
        padding-top: 45px;
    }
}