/* ===========================================
   LAYOUTS COMUNES (Header, Footer, Nav)
   =========================================== */

/* ---------- Header ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--color-primary);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ---------- Logo ---------- */
.logo {
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-lg);
}

.logo img,
.logo svg {
    height: 60px;
    width: auto;
}

/* ---------- Navigation ---------- */
.nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: 0;
}

.nav__item {
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.nav__link {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
    padding: 0 1.25rem;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-inverted);
    transition: all var(--transition-normal);
    position: relative;
    line-height: 1.2;
}

.nav__subtext {
    font-size: 0.7rem;
    font-weight: var(--font-weight-normal);
    opacity: 0.8;
    display: block;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--color-text-inverted);
    transition: width var(--transition-normal);
}

.nav__link::before {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 70%;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 20%,
        rgba(255, 255, 255, 0.6) 50%,
        rgba(255, 255, 255, 0.3) 80%,
        transparent 100%
    );
    opacity: 0;
    transition: all var(--transition-normal);
}

.nav__link:hover::after,
.nav__link--active::after {
    width: 60%;
}

.nav__link:hover::before {
    transform: translateX(-50%) scaleX(1);
    opacity: 1;
    animation: soundWave 1.5s ease-in-out infinite;
}

.nav__link:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

@keyframes soundWave {
    0%, 100% {
        transform: translateX(-50%) scaleX(1) scaleY(1);
        opacity: 0.6;
    }
    50% {
        transform: translateX(-50%) scaleX(1.1) scaleY(1.5);
        opacity: 1;
    }
}

/* ---------- Footer ---------- */
.footer {
    background-color: var(--color-primary);
    color: var(--color-text-inverted);
    padding-top: var(--spacing-2xl);
    position: relative;
    z-index: 4;
}

.footer__main {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg) var(--spacing-2xl);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    align-items: start;
}

.footer__section {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer__heading {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-relaxed);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    color: var(--color-text-inverted);
    transition: opacity var(--transition-normal);
    line-height: 1.35;
}

.footer__link:hover {
    opacity: 0.7;
}

.footer__divider {
    height: 1px;
    background-color: rgba(255, 255, 255, 0.1);
}

.footer__bottom {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__copyright {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    line-height: 1.5;
}

.footer__back-to-top {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.footer__back-to-top:hover {
    transform: translateY(-2px);
}

.footer__back-to-top svg {
    width: 8px;
    height: 22px;
    fill: var(--color-text-inverted);
}

/* ---------- Main Content ---------- */
.main {
    margin-top: var(--header-height);
}