/* ===================================================
   HEADER.CSS - Barra de navegación superior
   =================================================== */

.main-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    padding: 0 2rem;
    background: rgba(248, 250, 252, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
}

.main-header.header-scrolled {
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.header-content {
    max-width: var(--max-width-xl);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

/* --- Logo --- */
.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.logo-icon {
    background: var(--primary);
    color: white;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon i {
    width: 20px;
    height: 20px;
}

.logo-icon-sm {
    width: 30px;
    height: 30px;
}

.logo-icon-sm i {
    width: 16px;
    height: 16px;
}

.logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.logo-img-sm {
    height: 28px;
    width: auto;
}

.logo-text {
    font-weight: 800;
    font-size: var(--font-size-xl);
    color: var(--primary);
    letter-spacing: -0.02em;
}

/* --- Acciones del Header --- */
.header-nav {
    display: flex;
    align-items: center;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary);
    background: var(--primary-lighter);
}

.nav-btn-outline {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.55rem 1.2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
}

.nav-btn-outline:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-primary);
}

/* --- Botón de icono (Notificaciones, etc.) --- */
.icon-btn {
    position: relative;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.icon-btn i {
    width: 22px;
    height: 22px;
}

.notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: 700;
    min-width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

/* --- Avatar de usuario --- */
.user-avatar {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.user-avatar:hover {
    transform: scale(1.05);
}

/* --- Menú desplegable del usuario --- */
.user-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    min-width: 220px;
    padding: 0.5rem;
    z-index: var(--z-dropdown);
}

.dropdown-header {
    padding: 0.75rem 1rem;
}

.dropdown-name {
    font-weight: 700;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.dropdown-email {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: 2px;
}

.dropdown-divider {
    height: 1px;
    background: var(--border-light);
    margin: 0.25rem 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.dropdown-item i {
    width: 18px;
    height: 18px;
}

.dropdown-item-danger:hover {
    background: var(--danger-light);
    color: var(--danger);
}