:root {
    /* Dark Theme (Default) */
    --bg-primary: #0a0a14; --bg-secondary: #0d0d1a; --bg-card: #171826;
    --bg-panel: #12121f; --bg-input: #1a1a2e; --border-color: rgba(255, 255, 255, 0.1);
    --border-input: #252542; --text-primary: #fff; --text-secondary: #8888a5;
    --accent-color: #2d3bf5; --radius: 12px; --gap: 15px; --header-height: 60px;
}

html[data-theme="light"] {
    /* Light Theme Overrides */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-card: #FFFFFF;
    --bg-panel: #F8F9FA;
    --bg-input: #E9ECEF;
    --border-color: rgba(20, 20, 20, 0.1);
    --border-input: rgba(20, 20, 20, 0.1);
    --text-primary: #141414;
    --text-secondary: #495057;
    --accent-color: #8b3dff;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    gap: 16px;
    z-index: 1200;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 1.4em;
}

.nav-group {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: fit-content;
}

.right-icons {
    display: flex;
    gap: 8px;
    min-width: fit-content;
    flex-shrink: 0;
    margin-right: 40px;
}

.user-menu-btn {
    padding: 8px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-menu-btn:hover {
    background-color: var(--bg-input);
    border-color: var(--accent-color);
}

.header-user {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 4px 12px;
    border-radius: var(--radius);
    transition: all 0.15s;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    position: relative;
    min-width: fit-content;
    max-width: none;
}

.header-user.active .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.header-user:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9em;
    border: 2px solid var(--bg-card);
    transition: all 0.15s;
    flex-shrink: 0;
}

.header-user:hover .user-avatar {
    transform: scale(1.1);
}

.user-name {
    font-size: 0.9em;
    color: var(--text-secondary);
    transition: color 0.15s;
    display: block;
    white-space: nowrap;
    overflow: visible;
    flex-shrink: 0;
}

.header-user:hover .user-name {
    color: var(--accent-color);
}

.membership-badge {
    display: inline-block;
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 12px;
    margin-left: 4px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
    white-space: nowrap;
}

.badge-standard { background-color: #0dcaf0; color: #000; }
.badge-pro { background-color: #0d6efd; color: #fff; }
.badge-premier { background-color: #ffc107; color: #000; }

.user-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 240px;
    background-color: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
}

.user-dropdown-header {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.user-dropdown-name {
    font-weight: 600;
    color: var(--text-primary);
}

.user-dropdown-email {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.user-dropdown-membership {
    font-size: 0.85rem;
    margin-top: 4px;
    color: var(--text-secondary);
}

.user-dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 8px 0;
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background-color 0.15s;
    font-size: 14px;
}

.user-dropdown-item i {
    margin-right: 10px;
    font-size: 1.1em;
    width: 20px;
    text-align: center;
}

.user-dropdown-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.user-dropdown-item.text-danger:hover {
    background-color: rgba(255, 59, 105, 0.1);
}

.quick-buy-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--accent-color);
    background: transparent;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(90deg, #2d3bf5 0%, #6495ED 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 600;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .header-user {
        padding: 4px 8px;
    }
    
    .user-name {
        max-width: 100px;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}