/* ===================================
   NAVBAR STYLES
   Fixed navigation bar with mobile menu support
   =================================== */

/* Navbar Container */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-primary);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

/* Social Links */
.social-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    z-index: 1002;
    position: relative;
}

.social-links a {
    color: var(--text-primary);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
}

.social-links a:hover {
    background-color: var(--bg-ghost);
    transform: translateY(-2px);
}

/* ===================================
   HAMBURGER MENU (Mobile)
   Three-line menu icon with X animation
   =================================== */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 30px;
    height: 30px;
    cursor: pointer;
    z-index: 1001;
    position: relative;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--icon-color);
    transition: all var(--transition-base);
    position: relative;
}

.hamburger span:nth-child(2) {
    margin: 5px 0;
}

/* Hamburger X Animation */
.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===================================
   NAVIGATION MENU (Desktop)
   Horizontal navigation links
   =================================== */
.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-menu li {
    position: relative;
}

.nav-link {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    display: block;
}

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

/* Active Link */
.nav-link.active {
    background-color: var(--primary);
    color: var(--bg-primary);
}

/* Bottom border - desktop only */
.navbar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--primary);
    opacity: 0.6;
}

/* ===================================
   MOBILE STYLES
   Slide-in menu from right side
   =================================== */
@media (max-width: 768px) {
    /* Show hamburger */
    .hamburger {
        display: flex;
        position: relative;
    }

    /* Navbar container for mobile */
    .navbar-container {
        justify-content: space-between;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .social-links {
        order: -1;
    }

    /* Mobile Menu - slides in from right */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: var(--spacing-2xl);
        gap: var(--spacing-xl);
        transition: right 0.4s ease;
        box-shadow: var(--shadow-lg);
        z-index: 1000;
    }

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

    .nav-link {
        font-size: 1.5rem;
        padding: var(--spacing-md) var(--spacing-lg);
        text-align: center;
    }

    /* Hide border on mobile */
    .navbar::after {
        display: none;
    }

    /* Overlay - backdrop when menu is open */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        z-index: 999;
    }

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

/* ===================================
   TABLET STYLES (Optional)
   Minor adjustments for tablets
   =================================== */
@media (min-width: 769px) and (max-width: 1024px) {
    .nav-menu {
        gap: var(--spacing-lg);
    }

    .navbar-container {
        justify-content: center;
    }
    
}

/* ===================================
   DESKTOP STYLES
   Grid layout with centered navigation
   =================================== */
@media (min-width: 769px) {
    .navbar-container {
        display: grid;
        grid-template-columns: auto 1fr auto;
        justify-items: center;
        align-items: center;
    }

    /* Social links on left */
    .social-links {
        justify-self: start;
    }

    /* Nav menu centered */
    .nav-menu {
        justify-self: center;
    }

    /* Hide hamburger */
    .hamburger {
        display: none !important;
    }

    /* Remove nav overlay */
    .nav-overlay {
        display: none;
    }
}