/* --- 1. ПЕРЕМЕННЫЕ И ГЛОБАЛЬНЫЕ СТИЛИ --- */
:root {
    --bg-color: #293038;
    --bg-secondary-color: #363F49;
    --text-color: #E0E0E0;
    --text-secondary-color: #7C9AAD;
    --primary-color: #6361BE;
    --primary-hover-color: #7b79d6;
    --border-color: #546372;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { 
    font-family: 'Montserrat', sans-serif; 
    background-color: var(--bg-color); 
    color: var(--text-color); 
    line-height: 1.7; 
    transition: background-color 0.3s, color 0.3s; 
    font-size: 16px; 
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
section { padding: 80px 0; }
h1, h2, h3, h4, h5, h6 { 
    font-family: 'Orbitron', sans-serif;
    line-height: 1.2; 
    margin-bottom: 20px; 
    font-weight: 700; 
    color: var(--text-color);
}
p { 
    margin-bottom: 15px; 
    color: var(--text-secondary-color); 
    font-size: 1.05rem; 
}
a { color: var(--primary-color); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--primary-hover-color); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: 2.5rem; }
.section-header p { max-width: 700px; margin-left: auto; margin-right: auto; }


/* --- 2. СТИЛИ ХЕДЕРА И НАВИГАЦИИ --- */
.site-header { 
    background-color: var(--bg-secondary-color); 
    box-shadow: var(--card-shadow); 
    padding: 15px 0; 
    position: sticky; top: 0; 
    z-index: 1000; 
    transition: background-color 0.3s, box-shadow 0.3s; 
}
.site-header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.8rem; font-weight: 700; font-family: 'Orbitron', sans-serif; color: var(--text-color); }
.logo span { color: var(--primary-color); }
.main-nav { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.main-nav a { color: var(--text-color); font-weight: 500; position: relative; padding-bottom: 5px; }
.main-nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background-color: var(--primary-color); transition: width 0.3s ease; }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }


/* --- 3. HERO СЕКЦИЯ --- */
.hero { text-align: center; padding: 100px 0; background-color: var(--bg-secondary-color); }
.hero h1 { 
    font-size: 3.2rem;
    font-weight: 900;
    color: #fff;
    margin-bottom: 25px;
}
.hero .subtitle { font-size: 1.2rem; max-width: 650px; margin: 0 auto 40px auto; color: var(--text-secondary-color); }


/* --- 4. КНОПКИ --- */
.btn { display: inline-block; padding: 12px 28px; border-radius: 50px; font-weight: 500; transition: all 0.3s ease; cursor: pointer; border: none; font-size: 1.05rem; }
.btn-primary { 
    background-color: var(--primary-color); 
    color: #fff; 
    box-shadow: 0 4px 10px rgba(99, 97, 190, 0.3);
}
.btn-primary:hover { 
    background-color: var(--primary-hover-color); 
    color: #fff;
    transform: translateY(-3px); 
    box-shadow: 0 6px 15px rgba(99, 97, 190, 0.4); 
}
.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary-color);
}
.btn-secondary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}


/* --- 5. КАТАЛОГ ЭФФЕКТОВ --- */
.catalog-section { background-color: var(--bg-color); }
.effects-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.effect-card { 
    background-color: var(--bg-secondary-color); 
    border-radius: 10px; 
    box-shadow: var(--card-shadow); 
    transition: transform 0.3s, box-shadow 0.3s; 
    overflow: hidden; 
    display: flex;
    flex-direction: column;
}
.effect-card:hover { transform: translateY(-5px); }
.effect-preview img { width: 100%; height: 200px; object-fit: cover; background-color: var(--bg-color); display: block; }
.effect-info { padding: 25px; display: flex; flex-direction: column; flex-grow: 1; }
.effect-info h3 { margin-top: 0; font-size: 1.3rem; }
.effect-info p { flex-grow: 1; margin-bottom: 20px; color: var(--text-secondary-color); }
.effect-info .btn-secondary { margin-top: auto; }


/* --- 6. ПРОЧИЕ СЕКЦИИ (КАК РАБОТАЕТ, FAQ, О НАС) --- */
.how-it-works-section, .about-section { background-color: var(--bg-secondary-color); }
.steps-container { display: flex; justify-content: space-around; gap: 30px; margin-top: 50px; flex-wrap: wrap; }
.step { text-align: center; max-width: 300px; }
.step-number { font-size: 3rem; font-weight: 900; color: var(--primary-color); line-height: 1; margin-bottom: 10px; }
.step h3 { font-size: 1.3rem; margin-bottom: 10px; }

.faq-section .container { max-width: 800px; }
.faq-item { 
    background-color: var(--bg-secondary-color); 
    border-radius: 10px; 
    padding: 25px; 
    margin-bottom: 20px; 
    border: 1px solid var(--border-color);
}
.faq-item h3 { margin-top: 0; }
.about-section .container { max-width: 800px; text-align: center; }


/* --- 7. ПОДВАЛ --- */
.site-footer { 
    text-align: center; 
    padding: 40px 0; 
    background-color: var(--bg-secondary-color);
    border-top: 1px solid var(--border-color); 
    margin-top: 60px; 
}
.site-footer p { color: var(--text-secondary-color); }
.site-footer a { font-weight: 500; }


/* --- 8. АДАПТИВНОСТЬ --- */
@media (max-width: 768px) {
    section { padding: 60px 0; }
    .hero h1 { font-size: 2.5rem; }
    h2, .section-header h2 { font-size: 2rem; }
    .site-header .container { flex-wrap: wrap; justify-content: center; }
    .main-nav { display: none; /* In a real scenario, you'd use JS to toggle this for a hamburger menu */ }
    .steps-container { flex-direction: column; align-items: center; }
}