/* style/style.css */

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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --text-color: #334155;
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--light-color);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.navigation {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
    animation: float 20s linear infinite;
}

@keyframes float {
    from { transform: translateY(0); }
    to { transform: translateY(-100px); }
}

.hero-title {
    font-size: 48px;
    color: white;
    margin-bottom: 20px;
    font-weight: 700;
    animation: fadeInUp 0.8s ease-out;
}

.hero-description {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease-out;
}

.cta-button {
    display: inline-block;
    padding: 16px 40px;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 1.2s ease-out;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

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

/* Section Styles */
section {
    padding: 80px 0;
}

h2 {
    font-size: 40px;
    color: var(--dark-color);
    margin-bottom: 50px;
    text-align: center;
    position: relative;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

h3 {
    font-size: 24px;
    color: var(--dark-color);
    margin-bottom: 15px;
}

/* About Section */
.about-section {
    background: white;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.about-card {
    background: var(--light-color);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.about-card.animate {
    animation: fadeInUp 0.6s ease-out forwards;
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
}

.card-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

/* Features Section */
.features-section {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.features-content {
    max-width: 900px;
    margin: 0 auto;
}

.feature-item {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius);
    margin-bottom: 25px;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
    opacity: 0;
    transform: translateX(-30px);
}

.feature-item.animate {
    animation: slideInLeft 0.6s ease-out forwards;
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.feature-item:hover {
    border-left-color: var(--accent-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Technology Section */
.technology-section {
    background: white;
}

.tech-content {
    max-width: 900px;
    margin: 0 auto;
}

.tech-content p {
    margin-bottom: 20px;
    font-size: 18px;
    line-height: 1.8;
}

/* Access Section */
.access-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.access-section h2,
.access-section h3 {
    color: white;
}

.access-section h2::after {
    background: white;
}

.access-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.access-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 35px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    opacity: 0;
    transform: scale(0.9);
}

.access-card.animate {
    animation: scaleIn 0.6s ease-out forwards;
}

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.access-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.02);
}

.access-card p {
    margin-bottom: 15px;
    line-height: 1.7;
}

/* Versions Section */
.versions-section {
    background: white;
}

.versions-content {
    max-width: 900px;
    margin: 0 auto;
}

.versions-content h3 {
    margin-top: 40px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.versions-content p {
    margin-bottom: 20px;
    font-size: 18px;
    line-height: 1.8;
}

/* Usage Section */
.usage-section {
    background: var(--light-color);
}

.usage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.usage-item {
    background: white;
    padding: 35px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.usage-item.animate {
    animation: fadeInUp 0.6s ease-out forwards;
}

.usage-item:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.usage-item p {
    margin-bottom: 15px;
    line-height: 1.7;
}

/* Security Section */
.security-section {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.security-section h2,
.security-section h3 {
    color: white;
}

.security-section h2::after {
    background: white;
}

.security-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.security-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 35px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.security-item.animate {
    animation: fadeInUp 0.6s ease-out forwards;
}

.security-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.security-item p {
    line-height: 1.7;
}

/* FAQ Section */
.faq-section {
    background: white;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--light-color);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(99, 102, 241, 0.05);
}

.faq-question h3 {
    margin: 0;
    font-size: 20px;
}

.faq-toggle {
    font-size: 28px;
    color: var(--primary-color);
    font-weight: 300;
    transition: var(--transition);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 30px 25px;
}

.faq-answer p {
    line-height: 1.7;
    color: var(--text-color);
}

/* Final Section */
.final-section {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.final-content {
    max-width: 900px;
    margin: 0 auto;
}

.final-content p {
    margin-bottom: 25px;
    font-size: 18px;
    line-height: 1.8;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    color: white;
    margin-bottom: 20px;
    font-size: 20px;
}

.footer-column p {
    line-height: 1.7;
    opacity: 0.8;
}

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

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    opacity: 1;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    opacity: 0.7;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .navigation {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 250px;
        background: white;
        flex-direction: column;
        padding: 30px;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        height: calc(100vh - 70px);
    }

    .navigation.active {
        right: 0;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

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

    .hero-title {
        font-size: 32px;
    }

    .hero-description {
        font-size: 16px;
    }

    h2 {
        font-size: 32px;
    }

    h3 {
        font-size: 20px;
    }

    .about-grid,
    .access-grid,
    .usage-grid,
    .security-content {
        grid-template-columns: 1fr;
    }

    section {
        padding: 50px 0;
    }

    .hero {
        padding: 120px 0 70px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 26px;
    }

    h2 {
        font-size: 26px;
    }

    .cta-button {
        padding: 14px 30px;
        font-size: 16px;
    }

    .about-card,
    .access-card,
    .usage-item,
    .security-item {
        padding: 25px 20px;
    }

    .faq-question {
        padding: 20px;
    }

    .faq-question h3 {
        font-size: 18px;
    }
}