/* ============================================================
   ZAPHIRO HOME HEALTH — Header & Navigation
   Design: Precision Medical Dark
   ============================================================ */

/* ── Top Bar ── */
.top-bar {
    background: var(--navy-950);
    color: rgb(243, 242, 242);
    padding: 0.5rem 0;
    font-size: var(--font-size-sm);
    border-bottom: 1px solid rgba(0,180,216,0.15);
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.contact-info,
.email-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: #ffffff !important;
    font-size: calc(var(--font-size-sm) * 1.30);
    font-weight: 800 !important;
    transition: color var(--transition-fast);
}

.contact-item span {
    color: #ffffff !important;
    font-weight: 800 !important;
}

.contact-item:hover { color: var(--cyan-400); }

.email-info .contact-item {
    color: #ffffff;
    font-size: calc(var(--font-size-sm) * 1.30);
    font-weight: 800;
}

.contact-item .icon {
    width: 14px;
    height: 14px;
    opacity: 0.7;
}

.separator {
    color: #ffffff;
    margin: 0 0.25rem;
}

/* ── Main Navigation ── */
.main-nav {
    background: #ffffff;
    box-shadow: 0 2px 20px rgba(11,37,70,0.10);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: box-shadow var(--transition-base);
}

.main-nav.scrolled {
    box-shadow: 0 4px 32px rgba(11,37,70,0.16);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
}

/* ── Logo ── */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: opacity var(--transition-fast);
}

.logo:hover { opacity: 0.88; }

.logo-img {
    display: flex;
    align-items: center;
}

.logo-img img {
    display: block;
    width: auto;
    max-height: 64px;
    max-width: 200px;
    height: auto;
}

/* ── Navigation Menu ── */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    color: var(--text-dark);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.17rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    letter-spacing: 0.01em;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 2px;
    background: var(--cyan-500);
    border-radius: 2px;
    transition: transform var(--transition-fast);
}

.nav-link:hover { color: var(--navy-900); }
.nav-link:hover::after,
.nav-link.active::after { transform: translateX(-50%) scaleX(1); }
.nav-link.active { color: var(--navy-900); }

/* Contact Us button */
.nav-link.btn-contact {
    background: linear-gradient(135deg, var(--cyan-500) 0%, #0077a8 100%);
    color: #ffffff;
    padding: 0.55rem 1.25rem;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 14px rgba(0,180,216,0.28);
    margin-left: 0.5rem;
}

.nav-link.btn-contact::after { display: none; }

.nav-link.btn-contact:hover {
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,180,216,0.38);
    filter: brightness(1.08);
}

/* ── Mobile Menu Toggle ── */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.mobile-menu-toggle:hover { background: var(--bg-light); }

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--navy-900);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .mobile-menu-toggle { display: flex; }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        gap: 0.25rem;
        box-shadow: 0 16px 40px rgba(11,37,70,0.16);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base), padding var(--transition-base);
        border-top: 1px solid var(--border-light);
    }

    .nav-menu.active {
        max-height: 600px;
        padding: 1rem;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: 0.75rem 1rem;
        border-radius: var(--radius-lg);
    }

    .nav-link.btn-contact {
        margin-left: 0;
        margin-top: 0.5rem;
        text-align: center;
    }

    .logo-img img { max-height: 52px; }
}

@media (max-width: 640px) {
    .top-bar-content {
        flex-direction: column;
        text-align: center;
        gap: 0.25rem;
    }
}