/* ============================================
   HEADER — Sticky Horizontal Navbar
   ============================================ */

header {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    max-width: calc(var(--max-width) + 40px); /* Increased by 40px for more horizontal breathing room */
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2rem;
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    font-family: var(--font-heading);
}

/* Inner wrapper to constrain to max-width */
.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--max-width);
}

/* Logo */
.nav-logo {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
    transform: translateX(-20px);
}

.nav-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1.5px;
    line-height: 1.1;
}

.nav-logo-text span {
    color: var(--accent-purple);
}

.nav-logo-subtext {
    font-size: 0.62rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.8px;
    text-transform: uppercase;
    line-height: 1;
    margin-top: 3px;
    opacity: 0.85;
    transition: var(--transition-fast);
}

.nav-logo:hover .nav-logo-subtext {
    color: var(--accent-purple);
    opacity: 1;
}

/* Navigation Links */
nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 0.85rem; /* Reduced horizontal padding to prevent link overflow */
    border-radius: 8px;
    transition: var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

/* Animated underline */
nav a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-purple-light));
    border-radius: 2px;
    transition: width 0.3s ease, left 0.3s ease;
}

nav a:hover::after {
    width: 60%;
    left: 20%;
}

nav a:hover {
    color: var(--text-primary);
}

nav a.active {
    color: var(--accent-purple);
    font-weight: 600;
}

nav a.active::after {
    width: 60%;
    left: 20%;
    background: var(--accent-purple);
}

/* Download CV Button */
.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: white !important;
    padding: 0.5rem 1.15rem;
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.22);
    flex-shrink: 0;
    border: none;
    cursor: pointer;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.32);
}

.nav-cta i {
    font-size: 0.85rem;
}

/* Mobile hamburger toggle hidden on desktop */
.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.nav-toggle:hover {
    color: var(--accent-purple);
}

/* Spacer to push content below fixed navbar */
.nav-spacer {
    height: 0;
}

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

@media (max-width: 1200px) {
    header {
        padding: 0 1.5rem;
    }
    
    nav {
        gap: 0.15rem;
    }
    
    nav a {
        padding: 0.45rem 0.7rem;
        font-size: 0.85rem;
    }
    
    .nav-cta {
        padding: 0.45rem 1rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 768px) {
    header {
        top: 0;
        left: 0;
        transform: none;
        width: 100%;
        border-radius: 0;
        border-left: none;
        border-right: none;
        border-top: none;
        padding: 0 1rem;
    }

    .nav-toggle {
        display: block;
    }

    nav {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.96);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1rem;
        gap: 0.25rem;
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        transform: translateY(-120%);
        opacity: 0;
        transition: var(--transition);
        pointer-events: none;
        z-index: 999;
    }

    nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    nav a {
        width: 100%;
        padding: 0.75rem 1rem;
        text-align: center;
        font-size: 1rem;
    }

    .nav-cta {
        display: none;
    }

    .nav-logo {
        transform: none;
    }
}

@media (max-width: 576px) {
    header {
        padding: 0 0.75rem;
    }

    .nav-logo-text {
        font-size: 1.3rem;
    }

    .nav-logo-subtext {
        font-size: 0.55rem;
    }
}