header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

/* Brand Styling */
.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--gradient-brand);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

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

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-main);
}

.brand-tag {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--brand-purple);
}

/* Navigation Links */
.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-item {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-body);
    transition: color 0.2s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-item:hover {
    color: var(--brand-purple);
}

.nav-item.active {
    color: var(--brand-purple);
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--brand-purple);
    border-radius: 2px;
}

/* Login Button Specifics */
.login-btn {
    border-color: var(--brand-purple);
    color: var(--brand-purple);
    background: var(--brand-purple-light);
    padding: 0.6rem 1.25rem;
}

.login-btn:hover {
    background: var(--brand-purple);
    color: var(--text-white);
}

.brand-logo-img {
    height: 42px;
    width: auto;
    object-fit: contain;
}

/* Glassmorphism Tint for Navbar */
header {
    background-color: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.nav-icon {
    width: 18px;
    height: 18px;
}

/* Tactile Click & Hover Reactions */
.nav-item {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-item:hover {
    color: var(--brand-purple);
    background: var(--brand-purple-light);
    transform: translateY(-1px);
}

.nav-item:active {
    transform: scale(0.96);
}