/* main.css — главная страница. Префикс css_main_.
   Подключать после colors.css, header.css и footer.css. */

.css_main_body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: radial-gradient(ellipse at 30% 20%, #1a2233 0%, var(--c-bg) 55%);
    color: var(--c-text);
    font-family: 'Segoe UI', system-ui, sans-serif;
}

.css_main {
    flex: 1;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px 60px;
    box-sizing: border-box;
}

/* Первый экран */
.css_main_hero {
    padding: 72px 0 56px;
    max-width: 720px;
}

.css_main_hero-title {
    margin: 0 0 1rem;
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.15;
    background: linear-gradient(120deg, var(--c-text) 40%, var(--c-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.css_main_hero-text {
    margin: 0 0 2rem;
    font-size: 1.15rem;
    line-height: 1.6;
    color: var(--c-text-dim);
    max-width: 560px;
}

.css_main_hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.css_main_btn {
    display: inline-block;
    padding: .8rem 1.8rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: background .15s, color .15s, box-shadow .15s;
}

.css_main_btn-primary {
    background: var(--c-accent);
    color: var(--c-bg);
    box-shadow: var(--shadow-glow);
}

.css_main_btn-primary:hover {
    filter: brightness(1.1);
}

.css_main_btn-ghost {
    background: none;
    border: 1px solid var(--c-accent);
    color: var(--c-accent);
}

.css_main_btn-ghost:hover {
    background: var(--c-accent-dim);
}

/* Сильные стороны */
.css_main_features {
    padding: 24px 0;
}

.css_main_features-title {
    margin: 0 0 1.6rem;
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
}

.css_main_features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.2rem;
}

.css_main_feature {
    padding: 1.4rem 1.4rem 1.6rem;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    box-sizing: border-box;
    transition: border-color .15s, transform .15s;
}

.css_main_feature:hover {
    border-color: var(--c-accent);
    transform: translateY(-3px);
}

.css_main_feature-icon {
    width: 2.4rem;
    height: 2.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: .9rem;
    background: var(--c-accent-dim);
    border: 1px solid var(--c-accent);
    border-radius: var(--radius-sm);
    color: var(--c-accent);
    font-size: 1.1rem;
}

.css_main_feature-name {
    margin: 0 0 .5rem;
    font-size: 1.02rem;
    font-weight: 700;
}

.css_main_feature-text {
    margin: 0;
    font-size: .9rem;
    line-height: 1.5;
    color: var(--c-text-dim);
}

/* Приписка про оферту */
.css_main_note {
    margin-top: 2.4rem;
    padding: 1rem 1.4rem;
    background: rgba(250, 204, 21, .08);
    border: 1px solid var(--c-warning, #facc15);
    border-radius: var(--radius);
}

.css_main_note-text {
    margin: 0;
    font-size: .88rem;
    line-height: 1.5;
    color: var(--c-warning, #facc15);
}

/* На телефоне */
@media (max-width: 640px) {
    .css_main_hero {
        padding: 48px 0 40px;
    }

    .css_main_hero-title {
        font-size: 1.9rem;
    }

    .css_main_hero-actions {
        flex-direction: column;
    }

    .css_main_btn {
        text-align: center;
    }
}