/* ===========================
   CONTAINER & LAYOUT
   =========================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Grid Systems */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

/* ===========================
   NAVIGATION - GLASS MORPHISM
   =========================== */

nav {
    background: rgba(10, 37, 64, 0.75);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 180, 216, 0.3);
    box-shadow: 0 8px 32px rgba(10, 37, 64, 0.2);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    transition: var(--transition);
}

.nav-brand:hover .logo-icon {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 180, 216, 0.4);
}

.logo-icon {
    height: 52px;
    width: auto;
    border-radius: 12px;
    padding: 6px;
    transition: var(--transition);
    border: 2px solid rgba(0, 180, 216, 0.4);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(0, 180, 216, 0.1));
    box-shadow: 0 8px 25px rgba(0, 180, 216, 0.25),
                inset 0 1px 1px rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.logo-icon:hover {
    border-color: var(--secondary);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(0, 180, 216, 0.15));
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 700;
}

.brand-tagline {
    color: var(--secondary-light);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.8rem;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.nav-links a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--secondary-light);
}

.nav-links a:hover:after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

/* ===========================
   FOOTER - OPTIMIZED
   =========================== */

footer {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: var(--white);
    padding: 6rem 0 2rem;
    position: relative;
}

footer:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--health-primary));
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 5rem;
    margin-bottom: 4rem;
}

.footer-brand h4 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-links h5 {
    color: var(--secondary-light);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--secondary-light);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(0, 180, 216, 0.2);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
}

/* Footer Internal Apps Link */
.footer-internal {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 180, 216, 0.1);
}

.footer-internal a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    text-decoration: none;
    transition: var(--transition);
}

.footer-internal a:hover {
    color: var(--secondary-light);
}

/* ===========================
   RESPONSIVE LAYOUT
   =========================== */

@media (max-width: 992px) {
    .grid-4,
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    /* Mobile Navigation */
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--primary-dark);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-top: 1px solid rgba(0, 180, 216, 0.2);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .menu-toggle {
        display: block;
    }

    .logo-icon {
        height: 42px;
    }

    /* Mobile Grids */
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .container {
        padding: 0 1.5rem;
    }
}