/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    transition: background 0.2s ease, border-color 0.2s ease;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
}

.logo-mark {
    width: 28px;
    height: 28px;
    border: 2px solid var(--gold-primary);
    position: relative;
}

.logo-mark::before,
.logo-mark::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 55%;
    height: 2px;
    background: var(--gold-primary);
}

.logo-mark::before { transform: translate(-50%, -50%) rotate(-45deg); }
.logo-mark::after { transform: translate(-50%, -50%) rotate(45deg); }

.logo-text {
    font-family: 'Playfair Display', serif;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-center {
    display: flex;
    gap: 0.25rem;
}

.header-center a {
    padding: 0.4rem 0.9rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.15s ease;
}

.header-center a:hover {
    color: var(--text-secondary);
}

.header-center a.active {
    color: var(--gold-primary);
    background: var(--gold-subtle);
}

.header-right {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
}

#user-info {
    display: none;
    flex-direction: row;
    align-items: center;
    gap: 1.25rem;
}

.user-stats {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
}

.user-stat {
    display: flex;
    flex-direction: row;
    align-items: baseline;
    gap: 0.3rem;
}

.user-stat-value {
    font-family: 'Playfair Display', serif;
    font-size: 1.05rem;
    font-weight: 600;
    display: inline-block;
    white-space: nowrap;
}

.user-stat-value.rating { color: var(--gold-primary); }
.user-stat-value.wins { color: #4a9e4a; }
.user-stat-value.losses { color: #c94c4c; }

.user-stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    display: inline-block;
    white-space: nowrap;
}

.user-divider {
    width: 1px;
    height: 20px;
    background: var(--border-subtle);
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    white-space: nowrap;
}

/* Theme Toggle */
.theme-toggle {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    border-radius: 50%;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.15s ease;
    flex-shrink: 0;
    padding: 0;
}

.theme-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--border-accent);
}

#google-login-btn {
    padding: 0.45rem 1.1rem;
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border: none;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
}

#google-login-btn:hover {
    background: var(--btn-primary-hover);
}

.btn-ghost {
    padding: 0.4rem 0.8rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.8rem;
    cursor: pointer;
}

.btn-ghost:hover {
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    header {
        padding: 0.75rem 1rem;
    }
    .header-center {
        display: none;
    }
    .user-stats {
        display: none;
    }
}