/* Buttons - REUSABLE COMPONENTS */
.btn {
    display: inline-block;
    background-color: var(--primary-black);
    color: var(--primary-white);
    padding: 0.8rem 2rem;
    border: 2px solid var(--primary-white);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn:hover {
    background-color: var(--primary-white);
    color: var(--primary-black);
}

.menu-btn {
    background: var(--light-gray);
    border: 2px solid var(--primary-black);
    padding: 0.7rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.menu-btn.active {
    background: var(--primary-black);
    color: var(--primary-white);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--primary-white);
    cursor: pointer;
    font-weight: 600;
    padding: 0.5rem;
    opacity: 0.7;
    transition: opacity 0.3s;
}

.lang-btn.active {
    opacity: 1;
    text-decoration: underline;
}

.lang-btn:hover {
    opacity: 1;
}

/* Menu controls - REUSABLE COMPONENT */
.menu-controls {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.menu-content {
    display: none;
    text-align: center;
}

.menu-content.active {
    display: block;
}

/* Reusable section subtitle */
.section-subtitle {
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    line-height: 1.6;
}