/* Shared top navigation bar - identical structure on every page, themed
   entirely through the canonical variables from theme-vars.css. */

.site-nav {
    position: sticky;
    top: 0;
    z-index: 500;
    display: flex;
    align-items: center;
    gap: 24px;
    width: 100%;
    max-width: 1300px;
    margin: 0 auto 30px;
    padding: 14px 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.site-brand {
    font-family: var(--font-heading);
    font-size: 1.3em;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: 1px;
    text-shadow: 0 0 10px var(--accent-glow-primary);
    white-space: nowrap;
}

.site-nav-links {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.site-nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-family: var(--font-main);
    font-size: 0.92em;
    padding: 8px 14px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.site-nav-links a:hover,
.site-nav-links a.active {
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: inset 0 0 0 1px var(--border-color);
}

.nav-user-menu {
    position: relative;
    margin-left: auto;
}

.nav-user-menu .login-btn,
.nav-user-menu .profile-btn {
    background: var(--progress-gradient);
    color: var(--bg-dark);
    font-family: var(--font-heading);
    font-weight: 700;
    padding: 9px 18px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.35);
    white-space: nowrap;
}

.nav-user-menu .login-btn:hover,
.nav-user-menu .profile-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px var(--accent-glow-secondary);
}

.nav-user-menu .profile-btn img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid var(--accent-glow-primary);
}

.nav-user-menu .user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 8px;
    min-width: 180px;
    display: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 501;
}

.nav-user-menu .user-dropdown.show {
    display: block;
}

.nav-user-menu .user-dropdown a {
    display: block;
    padding: 10px 12px;
    color: var(--text-color);
    text-decoration: none;
    font-family: var(--font-main);
    border-radius: 6px;
    transition: background 0.2s ease;
}

.nav-user-menu .user-dropdown a:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--accent-glow-primary);
}

@media (max-width: 720px) {
    .site-nav {
        flex-wrap: wrap;
        gap: 12px;
        border-radius: 14px;
    }

    .nav-user-menu {
        margin-left: 0;
        order: 3;
        width: 100%;
    }

    .nav-user-menu .login-btn,
    .nav-user-menu .profile-btn {
        width: 100%;
        justify-content: center;
    }

    .site-nav-links {
        order: 2;
    }
}