:root {
    --ai-bg: #1A1A1A;
    --ai-block-bg: #313131;
    --ai-border: #464646;
    --ai-accent: #e30613;
    --ai-accent-hover: #c20510;
    --ai-secondary: #fffc0d;
    --ai-text-main: #ffffff;
    --ai-text-sec: #e5e5e5;
    --ai-text-muted: #999999;
}

.ai-landing-title {
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 15px;
    text-align: center;
    font-size: 36px; 
}

.ai-landing-subtitle {
    font-size: 16px;
    line-height: 1.6;
    color: var(--ai-text-sec);
    text-align: center;
    margin-bottom: 40px;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}
.ai-landing-h2 {
    font-weight: 700;
    text-align: center;
    font-size: 32px;
    line-height: 1.2;
}
.ai-landing-compare__title,
.ai-landing-card h3,
.ai-role-header {
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 22px;
    line-height: 1.3;
}

.ai-text-accent {
    color: var(--ai-secondary);
}

.ai-landing-section {
    padding: 80px 0;
}

.ai-landing-hero {
    padding: 40px 0 80px;
}
.ai-landing-tool {
    background-color: var(--ai-block-bg);
    border: 1px solid var(--ai-border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.ai-landing-tool__header {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
    justify-content: space-between;
    align-items: flex-start;
}

.ai-limit-badge {
    color: var(--ai-secondary);
    font-size: 14px;
    font-weight: 600;
    display: inline-block;
    padding: 6px 12px;
    background: rgba(255, 252, 13, 0.1);
    border-radius: 6px;
}

.ai-landing-tool__body {
    position: relative;
    margin-bottom: 25px;
}

.ai-landing-textarea {
    width: 100%;
    min-height: 220px;
    background-color: var(--ai-bg);
    border: 1px solid var(--ai-border);
    border-radius: 10px;
    padding: 20px;
    color: var(--ai-text-main);
    font-size: 16px;
    line-height: 1.6;
    resize: vertical;
    outline: none;
    font-family: inherit;
}

.ai-landing-textarea:focus {
    border-color: var(--ai-text-muted);
}

.ai-landing-counter {
    position: absolute;
    bottom: 15px;
    right: 20px;
    font-size: 13px;
    color: #666;
    background: var(--ai-bg);
    padding: 2px 6px;
    border-radius: 4px;
}

.ai-landing-tool__footer {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.ai-landing-tool__info {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: var(--ai-text-muted);
}
.ai-landing-btn {
    background-color: var(--ai-accent);
    color: #fff;
    border: none;
    padding: 16px 32px;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    width: 100%;
    text-align: center;
}

.ai-landing-btn:hover {
    background-color: var(--ai-accent-hover);
}

.ai-landing-btn:active {
    transform: scale(0.98);
}

.ai-landing-btn--full {
    width: 100%;
    margin-top: 25px;
}
.ai-landing-compare {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 40px;
}

.ai-landing-compare__col {
    background-color: var(--ai-block-bg);
    border: 1px solid var(--ai-border);
    border-radius: 16px;
    padding: 30px;
    position: relative;
}

.ai-landing-compare__col--accent {
    border: 2px solid var(--ai-accent);
    background: linear-gradient(180deg, rgba(227, 6, 19, 0.08) 0%, rgba(49, 49, 49, 1) 100%);
}

.ai-landing-badge {
    position: absolute;
    top: -14px;
    right: 30px;
    background-color: var(--ai-secondary);
    color: #000;
    font-size: 13px;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 20px;
    text-transform: uppercase;
}

.ai-landing-compare__title {
    padding-bottom: 20px;
    border-bottom: 1px solid var(--ai-border);
    margin-bottom: 25px;
}

.ai-landing-compare__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ai-compare-item {
    margin-bottom: 16px;
    padding-left: 36px;
    position: relative;
    color: var(--ai-text-sec);
    font-size: 16px;
}

.ai-compare-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    width: 20px;
    height: 20px;
    background-size: contain;
    background-repeat: no-repeat;
}

/* Иконки для списка (SVG) - оставлены прежними */
.ai-compare-item--check::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234CAF50' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
}
.ai-compare-item--cross::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='18' y1='6' x2='6' y2='18'%3E%3C/line%3E%3Cline x1='6' y1='6' x2='18' y2='18'%3E%3C/line%3E%3C/svg%3E");
    opacity: 0.6;
}
.ai-compare-item--limit::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23FFFC0D' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='12' y1='8' x2='12' y2='12'%3E%3C/line%3E%3Cline x1='12' y1='16' x2='12.01' y2='16'%3E%3C/line%3E%3C/svg%3E");
}

/* === ГРИД КАРТОЧЕК === */
.ai-landing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 40px;
}

.ai-landing-card {
    background-color: var(--ai-block-bg);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid transparent;
    transition: border-color 0.3s, transform 0.2s;
}

.ai-landing-card:hover {
    border-color: var(--ai-border);
    transform: translateY(-5px);
}

.ai-landing-card__icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.ai-landing-card h3 {
    color: var(--ai-text-main);
}

.ai-landing-card p {
    color: var(--ai-text-muted);
    margin: 0;
}

/* === РОЛИ И ПРОМТЫ === */
.ai-landing-bg-darker {
    background-color: #141414;
    margin: 80px 0;
}

.ai-landing-roles {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.ai-role-card {
    background: var(--ai-bg);
    border: 1px solid var(--ai-border);
    padding: 24px;
    border-radius: 12px;
    transition: transform 0.2s, border-color 0.2s;
}

.ai-role-card:hover {
    transform: translateY(-5px);
    border-color: var(--ai-accent);
}

.ai-role-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.ai-role-card p {
    font-size: 15px;
    color: var(--ai-text-muted);
    margin: 0;
}

.ai-role-card--add {
    border-style: dashed;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    cursor: pointer;
}

.ai-role-card--add .ai-role-header {
    color: var(--ai-accent);
    justify-content: center;
}

@media (max-width: 992px) {
    .ai-landing {
        padding-top: 0;
    }
    .ai-landing-hero {
        padding-top: 0;
        padding-bottom: 40px;
    }
    .ai-landing-section {
        padding: 40px 0;
    }
    .ai-landing-bg-darker {
        margin: 40px 0;
    }
}

@media (min-width: 768px) {
    
    .ai-landing-title {
        font-size: 52px;
    }
    
    .ai-landing-subtitle {
        font-size: 18px;
    }

    .ai-landing-h2 {
        font-size: 42px;
    }

    .ai-landing-compare__title,
    .ai-landing-card h3,
    .ai-role-header {
        font-size: 26px;
    }
    
    .ai-landing-tool {
        padding: 40px;
    }

    .ai-landing-tool__header {
        flex-direction: row;
        align-items: center;
    }
    
    .ai-landing-select {
        width: auto;
        min-width: 280px;
    }

    .ai-landing-tool__footer {
        flex-direction: row;
        justify-content: space-between;
    }

    .ai-landing-btn {
        width: auto;
        min-width: 240px;
    }

    .ai-landing-compare {
        grid-template-columns: 1fr 1fr;
    }

    .ai-landing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ai-landing-roles {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .ai-landing-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .ai-landing-roles {
        grid-template-columns: repeat(4, 1fr);
    }
}