.btn-modern-solid {
    background: var(--dark-color);
    color: #ffffff;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 9px 20px;
    border-radius: 12px;
    border: none;
    transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    min-width: max-content;
}

.btn-modern-solid:hover {
    background: var(--primary-color);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 102, 255, 0.25);
}

.btn-modern-ghost {
    background: transparent;
    color: var(--text-main);
    font-weight: 700;
    font-size: 0.85rem;
    padding: 9px 20px;
    border-radius: 12px;
    border: 1px solid transparent;
    transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    min-width: max-content;
}

.btn-modern-ghost:hover {
    background: rgba(0, 102, 255, 0.05);
    color: var(--primary-color);
}

.btn-premium-action {
    background: #ffffff;
    color: var(--dark-color);
    padding: 12px 26px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
}

.btn-premium-action:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 102, 255, 0.3);
}

.btn-premium-action-dark {
    background: var(--dark-color);
    color: white;
    font-weight: 700;
    padding: 12px 28px;
    border-radius: 14px;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.btn-premium-action-dark:hover {
    background: #1e293b;
    transform: translateY(-2px);
}

.btn-premium-action-blue {
    background: var(--primary-color);
    color: white;
    font-weight: 700;
    padding: 12px 28px;
    border-radius: 14px;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.9rem;
    box-shadow: 0 8px 20px rgba(0, 102, 255, 0.15);
}

.btn-premium-action-blue:hover {
    background: #0052cc;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 102, 255, 0.25);
}

.btn-share-node {
    background: none;
    border: 1px solid #e2e8f0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--text-muted);
    transition: all 0.2s;
    margin-left: 8px;
}

.btn-share-node:hover {
    background: var(--dark-color);
    color: white;
    border-color: var(--dark-color);
}

.btn-scroll-top {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    color: #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-scroll-top:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(0, 102, 255, 0.35);
}

.btn-newsletter-submit {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-newsletter-submit:hover {
    background: #0052cc;
    transform: scale(1.03);
    box-shadow: 0 6px 18px rgba(0, 102, 255, 0.4);
}