header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    transition: padding 0.3s ease, box-shadow 0.3s ease;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    font-size: clamp(1.15rem, 3.5vw, 1.5rem);
    font-weight: 700;
    color: var(--primary-green);
    background: linear-gradient(135deg, var(--primary-green), var(--accent-gold));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    font-family: var(--font-heading);
    white-space: nowrap;
    z-index: 1002;
}

.nav-links {
    display: flex;
    gap: 1.75rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.25rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--accent-gold);
    transition: var(--transition);
}

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

.nav-links a:hover {
    color: var(--primary-green);
}

/* Hamburger Button */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1002;
}

.hamburger:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 4px;
    border-radius: 2px;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2.5px;
    background-color: var(--primary-green);
    border-radius: 4px;
    transition: transform 0.3s ease, opacity 0.3s ease, background-color 0.3s ease;
    transform-origin: left center;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(2px, -2px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(2px, 2px);
}

/* Navigation Overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 999;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Mobile & Tablet Navigation */
@media (max-width: 960px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(300px, 80vw);
        height: 100vh;
        height: 100dvh;
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        flex-direction: column;
        align-items: flex-start;
        padding: 5rem 1.75rem 2rem;
        gap: 0;
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        overflow-y: auto;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 0.85rem 0;
        font-size: 1.05rem;
        color: var(--text-dark);
        border-bottom: 1px solid rgba(45, 90, 39, 0.08);
        width: 100%;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-links a:hover,
    .nav-links a:focus {
        color: var(--primary-green);
        padding-left: 0.5rem;
    }
}

@media (max-width: 480px) {
    header {
        padding: 0.75rem 0;
    }
}