/* ============================================================
   VPSTTT.COM - Header & Navigation
   ============================================================ */

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

/* ===== Top Announcement Bar ===== */
.top-bar {
    background: linear-gradient(90deg, #8000FF 0%, #3e1b82 50%, #7643C9 100%);
    background-size: 200% 100%;
    animation: topBarShimmer 6s ease-in-out infinite;
    padding: 6px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

@keyframes topBarShimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.top-bar-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.top-bar a {
    color: #fff;
    font-size: 0.8rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    opacity: 0.95;
}

.top-bar a:hover {
    opacity: 1;
    text-decoration: underline;
}

.top-bar-actions {
    display: flex;
    gap: 12px;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.top-bar-actions a {
    padding: 3px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(255,255,255,0.4);
    color: #fff;
}

.top-bar-actions a:hover {
    background: rgba(255,255,255,0.15);
}

/* ===== Main Navigation ===== */
.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: var(--header-height);
    max-width: var(--container-width);
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    flex-shrink: 0;
}

.nav-logo img {
    height: 52px;
    width: auto;
}

.nav-logo .logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.4rem;
    letter-spacing: 1px;
}

/* ===== Nav Menu ===== */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 14px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-primary);
    background: rgba(128, 0, 255, 0.05);
}

.nav-link .arrow {
    font-size: 0.6rem;
    transition: transform var(--transition-fast);
}

.nav-item:hover .nav-link .arrow {
    transform: rotate(180deg);
}

/* ===== Mega Menu ===== */
.mega-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    min-width: 580px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 100;
}

.nav-item:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.mega-menu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.mega-menu-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.mega-menu-item:hover {
    background: rgba(128, 0, 255, 0.05);
}

.mega-menu-item .mm-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.mega-menu-item .mm-text h4 {
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.mega-menu-item .mm-text p {
    font-size: 0.76rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Dropdown simple */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px;
    min-width: 220px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 8px 14px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
    background: rgba(128, 0, 255, 0.05);
    color: var(--accent-primary);
}

/* ===== Nav Right ===== */
.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.nav-login {
    padding: 8px 20px;
    background: var(--gradient-button);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #fff;
    transition: all var(--transition-fast);
}

.nav-login:hover {
    box-shadow: 0 4px 15px rgba(128, 0, 255, 0.25);
    transform: translateY(-1px);
}

/* ===== Mobile Hamburger ===== */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2.5px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Responsive Header ===== */
@media (max-width: 1100px) {
    .nav-link {
        padding: 8px 10px;
        font-size: 0.82rem;
    }
}

@media (max-width: 960px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 320px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 24px 24px;
        gap: 0;
        overflow-y: auto;
        transition: right var(--transition-normal);
        border-left: 1px solid var(--border-color);
    }

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

    .nav-link {
        width: 100%;
        padding: 12px 0;
        font-size: 0.95rem;
        border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    .mega-menu,
    .dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        min-width: 100%;
        box-shadow: none;
        border: none;
        background: transparent;
        padding: 0 0 0 16px;
        display: none;
    }

    .nav-item.open .mega-menu,
    .nav-item.open .dropdown-menu {
        display: block;
    }

    .mega-menu-grid {
        grid-template-columns: 1fr;
    }

    .top-bar-actions {
        display: none;
    }

    .top-bar a {
        font-size: 0.72rem;
    }

    .mobile-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.6);
        z-index: 999;
        display: none;
    }

    .mobile-overlay.active {
        display: block;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        width: 100%;
    }
    .nav-logo .logo-text {
        font-size: 1.2rem;
    }
}