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

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    color: #1e293b;
    background-image: url('images/background.jpg');
    background-repeat: repeat;
    background-size: auto;
    position: relative;
}

/* Легкий блакитний відтінок поверх фону */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(100, 150, 200, 0.1);
    z-index: -1;
}

/* Верхня полоска меню — світла, блакитна, чорний текст */
.top-bar {
    position: sticky;
    top: 0;
    background: rgba(225, 238, 248, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0.6rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    z-index: 100;
}

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #16a34a, #22c55e);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.nav-links a {
    text-decoration: none;
    color: #1e293b;
    font-weight: 500;
    transition: color 0.2s;
    font-size: 0.9rem;
}

.nav-links a:hover {
    color: #16a34a;
}

/* ===== HAMBURGER MENU ===== */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 200;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: #1e293b;
    margin: 5px 0;
    transition: 0.3s;
    border-radius: 3px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Світлі картки/плашки */
.card, .plaszka, .krok, .feature {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(4px);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: transform 0.2s;
}

.feature:hover, .plaszka:hover, .krok:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.98);
}

/* Зелена кнопка */
.btn {
    display: inline-block;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    transform: scale(1.03);
    background: linear-gradient(135deg, #16a34a, #15803d);
    box-shadow: 0 8px 20px rgba(34, 197, 94, 0.5);
}

.btn-large {
    font-size: 1.2rem;
    padding: 0.9rem 2rem;
}

/* Заголовки — чорні */
h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #0f172a;
}

h2 {
    font-size: 1.8rem;
    margin: 1.5rem 0 1rem;
    color: #0f172a;
}

h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: #16a34a;
}

.subtitle {
    font-size: 1.1rem;
    color: #334155;
    margin-bottom: 2rem;
}

/* Три кроки */
.kroki {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin: 2rem 0;
}
.krok {
    width: 260px;
    text-align: center;
}
.krok .numer {
    font-size: 2rem;
    font-weight: bold;
    color: #16a34a;
}
.krok p {
    color: #334155;
    text-align: center;
}
.krok h3 {
    text-align: center;
}

/* Сітка для плашок */
.features, .plaszki {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin: 2rem 0;
}
.feature, .plaszka {
    width: 260px;
    text-align: center;
}
.plaszka h3 {
    text-align: center;
}
.plaszka p {
    color: #334155;
    text-align: center;
}

/* Дві колонки для цін */
.columns-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.premium-card {
    border-top: 4px solid #4ade80;
}

.price {
    font-size: 2rem;
    font-weight: 700;
    margin: 1rem 0;
    color: #0f172a;
}
.price small {
    font-size: 0.9rem;
    font-weight: normal;
    color: #475569;
}

.feature-list {
    list-style: none;
    margin: 1.5rem 0;
}
.feature-list li {
    margin: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #1e293b;
}
.feature-list li::before {
    content: "✓";
    color: #16a34a;
    font-weight: bold;
}

/* Футер */
footer {
    text-align: center;
    padding: 1.5rem;
    color: #475569;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    margin-top: 2rem;
    font-size: 0.8rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 260px;
        height: 100vh;
        background: rgba(10, 20, 30, 0.95);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 5rem 1.5rem 1.5rem 1.5rem;
        transition: right 0.3s ease;
        z-index: 150;
        gap: 1.2rem;
        box-shadow: -2px 0 10px rgba(0,0,0,0.1);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links a {
        color: #f1f5f9;
        font-size: 1.1rem;
        padding: 0.5rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .nav-links a:hover {
        color: #4ade80;
    }
    
    .top-bar {
        justify-content: space-between;
        padding: 0.6rem 1rem;
    }
    
    h1 { 
        font-size: 1.8rem; 
    }
    
    .feature, .plaszka, .krok { 
        width: 100%; 
    }
}