/* ========================
   PREMIUM HEADER & THEME TOGGLE
   ======================== */

/* --- 1. Navigation Menu --- */
.nav-link-premium {
    position: relative;
    padding: 0.5rem 0.5rem; /* Increased horizontal padding for elegant spacing */
    font-size: 0.8125rem; /* Smaller font for a premium look */
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em; /* Wider tracking for elegance */
    color: rgba(255, 255, 255, 0.9);
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Hover Effect Line */
.nav-link-premium::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 100%;
    height: 2px;
    background-color: var(--accent);
    /* Gold/Accent Color */
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform-origin: center;
    opacity: 0;
}

.nav-link-premium:hover {
    color: white;
}

.nav-link-premium:hover::after {
    transform: translateX(-50%) scaleX(1);
    opacity: 1;
}

/* Active State */
.nav-link-premium.active {
    color: white;
    font-weight: 600;
}

.nav-link-premium.active::after {
    transform: translateX(-50%) scaleX(1);
    opacity: 1;
    background-color: white;
    /* White line for active page */
}

/* Scrolled State for Nav Links */
header.scrolled .nav-link-premium {
    color: var(--text-secondary);
}

header.scrolled .nav-link-premium:hover {
    color: var(--primary);
}

header.scrolled .nav-link-premium.active {
    color: var(--primary);
}

header.scrolled .nav-link-premium.active::after {
    background-color: var(--primary);
}

/* Dark Mode Scrolled Overrides */
[data-theme="dark"] header.scrolled .nav-link-premium {
    color: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] header.scrolled .nav-link-premium:hover,
[data-theme="dark"] header.scrolled .nav-link-premium.active {
    color: white;
}

[data-theme="dark"] header.scrolled .nav-link-premium.active::after {
    background-color: var(--accent);
}


/* --- 2. Simple Theme Toggle --- */
.theme-toggle-simple {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
}

.theme-toggle-simple:hover {
    transform: scale(1.1);
}

.theme-toggle-simple .theme-icon {
    width: 24px;
    height: 24px;
    position: absolute;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle-simple .sun-icon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

.theme-toggle-simple .moon-icon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

/* Dark Mode Transitions */
[data-theme="dark"] .theme-toggle-simple .sun-icon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .theme-toggle-simple .moon-icon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

/* Scrolled Header State */
header.scrolled .theme-toggle-simple {
    color: var(--text-primary);
}

header.scrolled .theme-toggle-simple:hover {
    color: var(--primary);
}



/* --- 3. Header Container Improvements --- */
header {
    /* Improve alignment */
    padding: 0 1rem;
}

.logo-image {
    /* Fix logo size */
    height: auto;
    max-height: 48px;
    width: auto;
}



/* Mobile Adjustments */
@media (max-width: 1024px) {
    /* Styles can be added here if adjustments are needed in future */
}