/* =============================================
   SHARED NAVBAR — Glass Dark Theme
   Used across ALL pages via <link rel="stylesheet" href="/css/navbar.css">
   ============================================= */

/* --- Variables (safe to redeclare — CSS cascades) --- */
:root {
    --nav-primary: #7c3aed;
    --nav-primary-dark: #6d28d9;
    --nav-primary-light: #a78bfa;
    --nav-primary-glow: rgba(124, 58, 237, 0.4);
    --nav-secondary: #06b6d4;
    --nav-accent: #f472b6;
    --nav-bg-glass: rgba(17, 24, 39, 0.6);
    --nav-bg-glass-heavy: rgba(17, 24, 39, 0.85);
    --nav-border-glass: rgba(255, 255, 255, 0.08);
    --nav-border-glass-hover: rgba(255, 255, 255, 0.15);
    --nav-border-accent: rgba(124, 58, 237, 0.3);
    --nav-text-primary: #f1f5f9;
    --nav-text-secondary: #94a3b8;
    --nav-text-muted: #64748b;
    --nav-glass-blur: blur(20px);
    --nav-glass-blur-heavy: blur(30px);
    --nav-glass-shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --nav-radius: 16px;
}

/* --- Header container --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 24px;
    background: linear-gradient(180deg, rgba(11, 15, 26, 0.8) 0%, transparent 100%);
    pointer-events: none;
}

.site-header > .site-nav {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--nav-bg-glass);
    backdrop-filter: var(--nav-glass-blur);
    -webkit-backdrop-filter: var(--nav-glass-blur);
    border: none;
    border-radius: 50px;
    padding: 0.5rem 0.5rem 0.5rem 1.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    pointer-events: auto;
}

/* --- Logo --- */
.site-nav .nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--nav-primary-light), var(--nav-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    flex-shrink: 0;
}

/* --- Center links --- */
.site-nav .nav-center {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.site-nav .nav-center a {
    text-decoration: none;
    color: var(--nav-text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.4rem 0.85rem;
    border-radius: 50px;
    transition: color 0.3s, background 0.3s;
}

.site-nav .nav-center a:hover {
    color: var(--nav-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.site-nav .nav-center a.active {
    color: var(--nav-primary-light);
    background: rgba(124, 58, 237, 0.12);
}

/* --- Right section --- */
.site-nav .nav-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* --- Guest buttons --- */
.nav-guest {
    display: none;
    align-items: center;
    gap: 0.5rem;
}

body.is-guest .nav-guest { display: flex; }
body.is-authenticated .nav-guest { display: none; }

.nav-guest .nav-btn-outline {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    border: none;
    color: var(--nav-text-secondary);
    background: rgba(255, 255, 255, 0.06);
    transition: all 0.3s;
}

.nav-guest .nav-btn-outline:hover {
    background: rgba(124, 58, 237, 0.12);
    color: var(--nav-primary-light);
}

.nav-guest .nav-btn-glow {
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    border: none;
    color: #fff;
    background: linear-gradient(135deg, var(--nav-primary) 0%, var(--nav-primary-dark) 100%);
    box-shadow: 0 4px 20px var(--nav-primary-glow), inset 0 1px 0 rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
}

.nav-guest .nav-btn-glow::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.nav-guest .nav-btn-glow:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--nav-primary-glow); }
.nav-guest .nav-btn-glow:hover::after { transform: translateX(100%); }

/* --- Auth pill (publish + bell + avatar) --- */
.nav-auth {
    display: none;
    align-items: center;
    gap: 0.35rem;
    padding: 0.3rem;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.04);
    border: none;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

body.is-authenticated .nav-auth { display: flex; }
body.is-guest .nav-auth { display: none; }

.nav-auth:hover {
    background: rgba(255, 255, 255, 0.06);
}

/* Publish button inside pill */
.nav-auth .nav-publish {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.8rem;
    text-decoration: none;
    border: none;
    color: #fff;
    white-space: nowrap;
    background: linear-gradient(135deg, var(--nav-primary), var(--nav-primary-dark));
    box-shadow: 0 2px 12px var(--nav-primary-glow);
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
}

.nav-auth .nav-publish::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.nav-auth .nav-publish:hover { box-shadow: 0 4px 20px var(--nav-primary-glow); }
.nav-auth .nav-publish:hover::after { transform: translateX(100%); }

/* Notification bell */
.nav-auth .nav-bell {
    position: relative;
    background: transparent;
    border: none;
    color: var(--nav-text-secondary);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease, background 0.3s ease;
}

.nav-auth .nav-bell:hover {
    color: var(--nav-primary-light);
    background: rgba(124, 58, 237, 0.1);
}

.nav-bell-dot {
    position: absolute;
    top: 3px;
    right: 3px;
    width: 8px;
    height: 8px;
    background: var(--nav-accent);
    border-radius: 50%;
    display: none;
    box-shadow: 0 0 8px rgba(244, 114, 182, 0.6);
}

.nav-bell-dot.active { display: block; }

/* User trigger (avatar + name + chevron) */
.nav-auth .nav-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.7rem 0.25rem 0.25rem;
    border-radius: 50px;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background 0.3s ease;
    user-select: none;
}

.nav-auth .nav-user:hover { background: rgba(124, 58, 237, 0.1); }
.nav-auth .nav-user.active { background: rgba(124, 58, 237, 0.12); }

.nav-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--nav-primary), var(--nav-secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    box-shadow: 0 0 10px rgba(124, 58, 237, 0.3);
    flex-shrink: 0;
}

.nav-user-name {
    font-weight: 500;
    color: var(--nav-text-primary);
    font-size: 0.85rem;
    max-width: 110px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-user-chevron {
    color: var(--nav-text-muted);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.nav-auth .nav-user.active .nav-user-chevron {
    transform: rotate(180deg);
    color: var(--nav-primary-light);
}

/* --- Dropdown --- */
.nav-dropdown {
    position: absolute;
    top: calc(100% + 0.75rem);
    right: 0;
    background: var(--nav-bg-glass-heavy);
    backdrop-filter: var(--nav-glass-blur-heavy);
    -webkit-backdrop-filter: var(--nav-glass-blur-heavy);
    border: none;
    border-radius: var(--nav-radius);
    box-shadow: var(--nav-glass-shadow-lg);
    min-width: 240px;
    padding: 0.5rem 0;
    display: none;
    z-index: 1100;
    transform-origin: top right;
}

.nav-dropdown.show {
    display: block;
    animation: navDropdownSlide 0.2s ease forwards;
}

@keyframes navDropdownSlide {
    from { opacity: 0; transform: translateY(-8px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.nav-dropdown-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 0.25rem;
}

.nav-dropdown-header strong {
    display: block;
    color: var(--nav-text-primary);
    font-size: 0.95rem;
}

.nav-dropdown-header span {
    font-size: 0.8rem;
    color: var(--nav-text-muted);
}

.nav-dropdown a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 1.25rem;
    color: var(--nav-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.nav-dropdown a:hover {
    background: rgba(124, 58, 237, 0.1);
    color: var(--nav-text-primary);
}

.nav-dropdown .nav-dd-icon {
    font-size: 1rem;
    width: 1.25rem;
    text-align: center;
    flex-shrink: 0;
}

.nav-dropdown a.nav-dd-admin {
    display: none;
}

body.is-admin .nav-dropdown a.nav-dd-admin {
    display: flex;
}

.nav-dropdown .nav-dd-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.05);
    margin: 0.25rem 0;
}

.nav-dropdown .nav-dd-divider.nav-dd-admin {
    display: none;
}

body.is-admin .nav-dropdown .nav-dd-divider.nav-dd-admin {
    display: block;
}

.nav-dropdown a.nav-logout {
    color: #f87171;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 0.25rem;
    padding-top: 0.75rem;
}

.nav-dropdown a.nav-logout:hover {
    background: rgba(248, 113, 113, 0.08);
}

/* --- Body offset for fixed navbar --- */
body { padding-top: 80px; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .site-header { padding: 10px 12px; }
    .site-nav .nav-center { display: none; }
    .nav-user-name { display: none; }
    .nav-auth .nav-publish { font-size: 0.75rem; padding: 0.4rem 0.85rem; }
}

@media (max-width: 480px) {
    .nav-guest .nav-btn-glow { display: none; }
}