/* 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: #f1f5f9;
    --text-color: #334155;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.8;
    color: var(--text-color);
    background-color: #ffffff;
    overflow-x: hidden;
}

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

header {
    background: var(--gradient);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

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

.logo {
    font-size: 32px;
    font-weight: bold;
    color: white;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

nav {
    display: flex;
    gap: 30px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 5px 0;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: white;
    transition: width 0.3s ease;
}

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

.mobile-menu {
    display: none;
    background: transparent;
    border: 2px solid white;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 5px 15px;
    border-radius: 5px;
}

.hero {
    background: var(--gradient);
    color: white;
    padding: 120px 0 100px;
    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="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.3;
}

h1 {
    font-size: 48px;
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease;
    position: relative;
    line-height: 1.3;
}

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

.lead {
    font-size: 20px;
    margin-bottom: 35px;
    opacity: 0.95;
    animation: fadeInUp 1s ease;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 18px;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 1.2s ease;
}

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

section {
    padding: 80px 0;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

section.fade-in {
    opacity: 1;
    transform: translateY(0);
}

h2 {
    font-size: 36px;
    margin-bottom: 30px;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 15px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

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

p {
    margin-bottom: 20px;
    font-size: 17px;
    line-height: 1.8;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.feature-card {
    background: white;
    padding: 35px;
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.security {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
}

.steps {
    display: grid;
    gap: 25px;
    margin: 40px 0;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.step:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.12);
}

.step-number {
    min-width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    font-weight: bold;
    font-size: 22px;
    flex-shrink: 0;
}

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

.faq {
    background: white;
}

.faq-item {
    background: var(--light-color);
    margin-bottom: 20px;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-item h3 {
    padding: 25px;
    cursor: pointer;
    background: white;
    margin: 0;
    transition: all 0.3s ease;
    position: relative;
    padding-right: 50px;
}

.faq-item h3::after {
    content: '+';
    position: absolute;
    right: 25px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 28px;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.faq-item.active h3::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-item h3:hover {
    background: var(--light-color);
}

.faq-item p {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s ease;
    margin: 0;
}

.faq-item.active p {
    padding: 25px;
    max-height: 500px;
}

.conclusion {
    background: linear-gradient(135deg, #f093fb15 0%, #f5576c15 100%);
}

footer {
    background: var(--dark-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

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

.footer-section p {
    opacity: 0.85;
    font-size: 15px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

@media (max-width: 768px) {
    .mobile-menu {
        display: block;
    }

    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--gradient);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    nav.active {
        max-height: 400px;
    }

    h1 {
        font-size: 32px;
    }

    h2 {
        font-size: 28px;
    }

    h3 {
        font-size: 20px;
    }

    .hero {
        padding: 80px 0 60px;
    }

    section {
        padding: 50px 0;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
    }

    .step {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 26px;
    }

    .lead {
        font-size: 16px;
    }

    .cta-button {
        padding: 12px 30px;
        font-size: 16px;
    }
}